7CAP / 7CHP

7 CHANNEL RADIO CONTROL SYSTEM

INSTRUCTION MANUAL

Technical updates and additional programming examples available at: www.futaba-rc.com\faq\7c-faq.html

Entire Contents © Copyright 2003 1M23N13606
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Additional Technical Help, Support and Service . . . . .3

Application, Export and Modification . . . . . . . . . . . . .4

Meaning of Special Markings . . . . . . . . . . . . . . . . . . .5

Safety Precautions (do not operate without reading) . .5

Introduction to the 7C . . . . . . . . . . . . . . . . . . . . . . . . .7

Contents and Technical Specifications . . . . . . . . . . . .9

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Transmitter Controls &

Switch Identification/Assignments . . . . . . . . . . . . . .11

Charging the Ni-Cd Batteries . . . . . . . . . . . . . . . . . .14

Stick Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Radio Installation . . . . . . . . . . . . . . .. . . . . . . . . . . .16

Range Checking & Aircraft Frequencies . . . . . . . . . .17

Transmitter Displays and Buttons . . . . . . . . . . . . . . .18

Warning and Error Displays . . . . . . . . . . . . . . . . . . .19

AIRPLANE FUNCTIONS

Map of Functions . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Quick Guide to Setting up a 4-channel Airplane . . . .22

ACRO BASIC MENU FUNCTIONS . . . . . . . . . . . . . . . .25

MODEL Submenu: MODEL SEL. , COPY and NAME . .25

Parameter(PARA.) Submenu: RESET,TYPE,MODUL,

CH5 & CH7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Servo REVERSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

End Point (E. POINT) . . . . . . . . . . . . . . . . . . . . . . .32

Idle Management: THR-CUT

Dual Rates and Exponential ( D/R,EXP ) . . . . . . . . .34

TIMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

TRAINER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

TRIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

SUB-TRIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Fail Safe (F/S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

ACRO ADVANCE MENU FUNCTIONS . . . . . . . . . .42

Wing types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Flaperon (FLAPRN) . . . . . . . . . . . . . . . . . . .43

Flap Trim (FL-TRIM) . . . . . . . . . . . . . . . . . . .44

ELEVON (see tail types) . . . . . . . . . . . . . . . . . . .45

Tail types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

ELEVON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

V-TAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

SNAP ROLL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Mixes: definitions and types . . . . . . . . . . . . . . . . . . .48

ELE-FLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Air Brake (A.BRAKE) . . . . . . . . . . . . . . . . . . . . . .52

FLP-ELE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

AIL-RUD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Prog. Mixes (P-MIX1-3) . . . . . . . . . . . . . . . . .53

Other Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

HELICOPTER FUNCTIONS . . . . . . . . . . . . . . . . . . .57

Table of contents and reference info for helicopters . .57

Getting Started with a Basic Helicopter . . . . . . . . . .58

HELI-SPECIFIC BASIC MENU FUNCTIONS . . . . .61

MODEL TYPE (PARA. submenu) . . . . . . . . . .61

SWASH AFR (swashplate surface direction and

travel correction) (not in H1) ... . . . . . . . . . . .63

Setting up the Normal Flight Condition . . . . . . .65

TH-CUT (specialized settings for helicopter specific

models) ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

HELI-SPECIFIC ADVANCE MENU FUNCTIONS. . .67

Throttle Hold (TH-HOLD) . . . . . . . . . . . . . . . . . . .67

TH-CRV, PI -CRV and Revolution Mix . ... (REVO) .68

Idle-ups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Trims/offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Hovering setups . . . . . . . . . . . . . . . . . . . . . . . . . .71

Gyros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Note that in the text of this manual, beginning at this point,

any time we are using a featureís specialized name or

abbreviation, as seen on the screen of the 7C, that name,

feature, or abbreviation will be exactly as seen on the radio's

screen, including capitalization, and shown in aDIFFERENT

TYPE STYLE for clarity. Any time we mention a specific

control on the radio itself, such as moving SWITCH A, KNOB

VR, or the THROTTLE STICK, those words will be

displayed as they are here.

2

TABLE OF CONTENTS

. . . . . . . . . . . . . . . . . . .33

. . . . . . . . . . . . . . . . . . . . . .20
INTRODUCTION

Thank you for purchasing a Futaba® 7C series digital proportional R/C system. This system is extremely versatile and may

be used by beginners and pros alike. In order for you to make the best use of your system and to fly safely, please read this

manual carefully. If you have any difficulties while using your system, please consult the manual, our online Frequently

Asked Questions (on the web pages referenced below), your hobby dealer, or the Futaba Service Center.

Owner's Manual and Additional Technical Help

This manual has been carefully written to be as helpful to you, the new owner, as possible. There are many pages of setup

procedures and examples. However, it need not be your sole resource of setup guidelines for your 7C. For example, pages

22-24 include setup instructions for a basic 4-channel airplane. The Frequently Asked Questions web page referenced

below includes this type of step-by-step setup instructions for a variety of other model types, including multi-engine,

complex gear installation, 7-servo aerobatic models, 140 degree CCPM, etc.

Due to unforeseen changes in production procedures, the information contained in this manual is subject to change without notice.

Support and Service: It is recommended to have your Futaba equipment serviced annually during your hobby's "off

season" to ensure safe operation.

IN NORTH AMERICA

Please feel free to contact the Futaba Service Center for assistance in operation, use and programming. Please be sure to

regularly visit the 7C Frequently Asked Questions web site at www.futaba-rc.com\faq\faq-7c.html. This page includes

extensive programming, use, set up and safety information on the 7C radio system and is updated regularly. Any technical

updates and US manual corrections will be available on this web page. If you do not find the answers to your questions there,

please see the end of our F.A.Q. area for information on contacting us via email for the most rapid and convenient response.

Donít have Internet access? Internet access is available at no charge at most public libraries, schools, and other public

resources. We find internet support to be a fabulous reference for many modelers as items can be printed and saved for future

reference, and can be accessed at any hour of the day, night, weekend or holiday. If you do not wish to access the internet for

information, however, don't worry. Our support teams are available Monday through Friday 8-5 Central time to assist you.

FOR SERVICE ONLY: FOR SUPPORT :

Hobby Services (U.S. only) (PROGRAMMING AND USER QUESTIONS)

3002N, Apollo Drive, Suite 1 Please start here for answers to most questions:

Champaign, IL 61822 U.S.A. www.futaba-rc.com\faq\faq-7c.html

(217)398-0007

www.hobbyservices.com

FACSIMILE: 217-398-7721

PHONE: 217-398-8970 option 4

OUTSIDE NORTH AMERICA

Please contact your Futaba importer in your region of the world to assist you with any questions, problems or service needs.

Please recognize that all information in this manual, and all support availability, is based upon the systems sold in North

America only. Products purchased elsewhere may vary. Always contact your region's support center for assistance.

3
Application, Export, and Modification

1. This product may be used for model airplane or surface (boat, car, robot) use, if on the correct frequency. It is not

intended for use in any application other than the control of models for hobby and recreational purposes. The product is

subject to regulations of the Ministry of Radio/Telecommunications and is restricted under Japanese law to such purposes.

2. Exportation precautions:

(a) When this product is exported from the country of manufacture, its use is to be approved by the laws governing the

country of destination which govern devices that emit radio frequencies. If this product is then re-exported to other

countries, it may be subject to restrictions on such export. Prior approval of the appropriate government authorities may

be required. If you have purchased this product from an exporter outside your country, and not the authorized Futaba

distributor in your country, please contact the seller immediately to determine if such export regulations have been met.

(b) Use of this product with other than models may be restricted by Export and Trade Control Regulations, and an application

for export approval must be submitted. In the US, use of 72MHz (aircraft only), 75MHz (ground models only) and 27MHz

(both) frequency bands are strictly regulated by the FCC. This equipment must not be utilized to operate equipment other than

radio controlled models. Similarly, other frequencies (except 50MHz, for HAM operators) must not be used to operate models.

3. Modification, adjustment, and replacement of parts: Futaba is not responsible for unauthorized modification, adjustment, and

replacement of parts on this product. Any such changes may void the warranty.

Compliance Information Statement (for U.S.A.)

This device, trade name Futaba Corporation of America, model number R138DP and R127DF comply with part 15

of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and

(2) This device must accept any interference received, including interference that may cause undesired operation.

The responsible party of this device compliance is;

Futaba Corporation of America

2865 Wall Triana Highway, Huntsville, Alabama 35824, U.S.A.

TEL (256) 461 - 7348

The RBRCTM SEAL on the nickel-cadmium battery contained in Futaba products indicates that Futaba

Corporation of America is voluntarily participating in an industry-wide program to collect and recycle these

batteries at the end of their useful lives, when taken out of service within the United States. The RBRCTM

program provides a convenient alternative to placing used nickel-cadmium batteries into the trash or municipal

waste system, which is illegal in some areas.

(for USA)

You may contact your local recycling center for information on where to return the spent battery. Please call

1-800-8-BATTERY for information on Ni-Cd battery recycling in your area. Futaba Corporation of Americaís involvement

in this program is part of its commitment to protecting our environment and conserving natural resources.

NOTE: Our instruction manuals encourage our customers to return spent batteries to a local recycling center in order to

keep a healthy environment.

RBRC is a trademark of the Rechargeable Battery Recycling Corporation.

4
Meaning of Special Markings

Pay special attention to safety where indicated by the following marks:

DANGER - Procedures which may lead to dangerous conditions and cause death/serious injury if not carried out properly.

WARNING - Procedures which may lead to a dangerous condition or cause death or serious injury to the user if not

carried out properly, or procedures where the probability of superficial injury or physical damage is high.

CAUTION - Procedures where the possibility of serious injury to the user is small, but there is a danger of injury, or

physical damage, if not carried out properly.

= Prohibited = Mandatory

Warning: Always keep electrical components away from small children.

FLYING SAFETY

To ensure the safety of yourself and others, please observe the following precautions:

Have regular maintenance performed. Although your 7C protects the model memories with non-volatile EEPROM

memory (which does not require periodic replacement) and not a battery, it still should have regular checkups for wear

and tear. We recommend sending your system to the Futaba Service Center annually during your non-flying-season

for a complete checkup and service.

Ni-Cd Battery

Charge the batteries! (See Charging the Ni-Cd batteries, p. 14, for details.) Always recharge the transmitter and

receiver batteries for at least 15 hours before each flying session. A low battery will soon die, causing loss of control

and a crash. When you begin your flying session, reset your 7C's built-in timer, and during the session pay attention

to the duration of usage.

Stop flying long before your batteries become low on charge. Do not rely on your radioís low battery warning

systems, intended only as a precaution, to tell you when to recharge. Always check your transmitter and

receiver batteries prior to each flight.

Where to Fly

We recommend that you fly at a recognized model airplane flying field. You can find model clubs and fields by asking

your nearest hobby dealer, or in the US by contacting the Academy of Model Aeronautics.

You can also contact the national Academy of Model Aeronautics (AMA), which has more than 2,500 chartered clubs across the

country. Through any one of them, instructor training programs and insured newcomer training are available. Contact the AMA

at the address or toll-free phone number below.

Academy of Model Aeronautics

5151 East Memorial Drive

Muncie, IN 47302-9252

Tele. (800) 435-9262

Fax (765) 741-0057

or via the Internet at http:\\www.modelaircraft.org

5
Always pay particular attention to the flying field's rules, as well as the presence and location of spectators, the

wind direction, and any obstacles on the field. Be very careful flying in areas near power lines, tall buildings, or

communication facilities as there may be radio interference in their vicinity.

If you must fly away from a club field, be sure there are no other modelers flying within a three-to-five-mile range, or you may

lose control of your aircraft or cause someone else to lose control.

At the flying field

Before flying, be sure that the frequency you intend to fly with is not in use, and secure any frequency control

device (pin, tag, etc.) for that frequency before turning on your transmitter. It is never possible to fly two or more

models on the same frequency at the same time. Even though there are different types of modulation (AM, FM,

PCM), only one model may be flown on a single frequency at any one time.

To prevent possible damage to your radio gear, turn the power switches on and off in the proper sequence:

1. Pull throttle stick to idle position, or otherwise disarm your motor/engine.

2. Turn on the transmitter power and allow your transmitter to reach its home screen.

3. Confirm the proper model memory has been selected.

4. Fully extend the transmitter antenna.

5. Turn on your receiver power.

6. Test all controls. If a servo operates abnormally, donít attempt to fly until you determine the cause of the problem.

(For PCM systems only: Test to ensure that the FailSafe settings are correct by waiting at least 2 minutes after

adjusting and then turning the transmitter off and confirming the proper surface/throttle movements. Turn the

transmitter back on.)

7. Start your engine.

8. Complete a full range check (see p. 17).

9. After flying, bring your throttle stick to idle position, engage any kill switches or otherwise disarm your motor/engine.

10. Turn off receiver power.

11. Turn off transmitter power.

If you do not turn on your system in this order, you may damage your servos or control surfaces, flood your engine, or in the

case of electric-powered or gasoline-powered models, the engine may unexpectedly turn on and cause a severe injury.

While you are getting ready to fly, if you place your transmitter on the ground, be sure that the wind won't tip

it over. If it is knocked over, the throttle stick may be accidentally moved, causing the engine to speed up. Also,

damage to your transmitter may occur.

Before taxiing, be sure to extend the transmitter antenna to its full length.

A collapsed antenna will reduce your flying range and cause a loss of control. It is a good idea to avoid pointing the transmitter

antenna directly at the model, since the signal is weakest in that direction.

Don't fly in the rain! Water or moisture may enter the transmitter through the antenna or stick openings and cause erratic

operation or loss of control. If you must fly in wet weather during a contest, be sure to cover your transmitter with a plastic

bag or waterproof barrier. Never fly if lightning is expected.

6
A QUICK INTRODUCTION TO THE 7C SYSTEM

TRANSMITTER:

• Large graphic liquid-crystal display panel with 4 buttons and an easy set up turn-and-press Dial for quick, easy setup.

•All transmitters include all 2 aircraft types with specialized programming for each, including:

• Airplane (ACRO)

• V-TAIL • Twin Aileron Servos (FLAPRN )

• ELEVON

• Air Brake

• Snap Roll

• Helicopter (6 swashplate types, including CCPM, see page 61)

• 2 Idle Ups • Throttle and Pitch Curves per Condition

• Revo. Mixing • Gyro Mixing including Separate Settings per Condition

• BASIC menu for quick, easy set up of less complex models.

• ADVANCE menu for more complex, unique setups.

• Four electronic TRIM LEVERS for rapid yet precise trim adjustment - no remembering to "store trims" between models

and no more "bumped trims" during transport.

• TH-CUT (ACRO/HELI) (engine shut off) setups to allow precise engine control for taxi and landings.

• 10 complete model memories

• New stick design with improved feel, adjustable length and tension.

• Triple rates available by setting dual rates to 3-position switches.

• Six SWITCHES and 1DIAL ; assignable in some applications.

• Trainer system includes the "functional" (F ) setting, which allows the student to use the 7C's mixing, helicopter, and

other programming functions even with a 4-channel buddy box. (Optional trainer cord required.)

• Transmits in both FM (PPM) and PCMby selecting modulation/cycling transmitter. Requires receiver of proper modulation.

• Permanent memory storage via EEPROM with no backup battery to service or have fail.

• 7CA transmitter features airplane friendly switch layout, with the trainer switch at the left hand, and a notched throttle

to minimize throttle changes with rudder input. Defaults to ACRO MODEL TYPE.

• 7CH transmitter features helicopter-friendly switch layout, with idle-up switch at the left hand, and

a smooth, ratchet-less (unsprung) throttle for perfect hovering. Defaults to H-1 MODEL TYPE.

Note that in the text of this manual, beginning at this point, any time we are using a featureís specialized name or abbreviation

as seen on the screen of the 7C, that name, feature, or abbreviation will be exactly as seen on the radioís screen, including

capitalization, and shown in a DIFFERENT TYPESTYLE for clarity. Any time we mention a specific control on the radio itself,

such as moving SWITCH A, KNOB VR, or the THROTTLE STICK, those words will be displayed as they are here.

7

• In North America it is against FCC regulation to change the crystal within the transmitter to a different

channel. All such transmitter crystal changes must be performed by a certified radio technician. Failure to properly tune

a system to its new channel may result in decreased range and may also result in interference to other types of frequency

users on adjoining channels. Doing so also voids your AMA insurance.
SERVOS

• Please see technical specifications page for specifics on the servos included with your system.

• The included receiver is compatible with all J-plug Futaba servos, including retract, winch, and digital servos.

8

RECEIVER: R127DF/R138DP

• The R127DF FM 7-channel or the R138DP PCM 7-channel receiver included with your system is a high-sensitivity

narrow-band dual-conversion receiver.

• Any Futaba narrow band FM receiver (all produced after 1991) on the correct frequency band and frequency may be

used with the 7C.

• Any Futaba PCM 1024 receiver on the right frequency band and frequency may be used with the 7C (all 1024 receivers

say PCM1024; receivers which say PCM but not 1024 are 512 resolution and not compatible).

NEVER attempt to change a receiver's band by simply changing crystal (I.E. removing a 72MHz crystal and inserting

a 75MHz crystal). A receiver that has a crystal installed from a different frequency band without retuning will not

receive properly and will have dramatically decreased range.

• In North America the receiver included with this system may have its frequency changed by simply changing the crystal

as long as it remains in the same half the band. A low band receiver between channels 11 and 35 may be changed to

any other channel between 11 and 35 without requiring any tuning. A high band receiver between channels 36 and 60

may similarly be changed. Receivers being changed from a high band channel to a low band or vice versa require proper

tuning and service by the Futaba Service Center.
• R127DF Receiver or R138DP Receiver

• Servos, S3004, S3151, S3003 or S3001, with mounting

hardware and servo arm assortment

• Switch harness

• Aileron extension cord

• 110V wall charger (North America)

• Frequency Flag

Transmitter T7CAP/T7CHP

Operating system: 2-stick, 7 channels

Transmitting frequency: 50 or 72 MHz bands

Modulation: FM/PPM or PCM, switchable

Power supply: 9.6V NT8S600B Ni-Cd battery

Current drain: 250 mA

Receiver R138DP

(PCM Dual conversion)

Receiving frequency: 50 or 72 MHz bands

Intermediate freq.: 10.7 MHz & 455 kHz

Power requirement: 4.8 - 6.0V Ni-Cd battery

Current drain: 16 mA

Size: 2.56 x 1.42 x 0.85 (65 x 36 x 21.5 mm)

Weight: 1.42 oz (40.3 g)

Channels: 8

Receiver R127DF

(FM Dual conversion)

Receiving frequency: 50 or 72 MHz bands

Intermediate freq.: 10.7MHz & 455 kHz

Power requirement: 4.8 - 6.0V Ni-Cd battery

Current drain: 10 mA

Size: 2.53 x 1.41 x 0.83 (64.3 x 35.8 x 21.0 mm)

Weight: 1.43 oz (40.5 g)

Channels: 7

Servo S3151 ( Standard, digital )

Control system: Pulse width control, 1.52 ms neutral

Power requirement: 4.8V (from receiver)

Output torque: 43.0 oz-in(3.1 kg-cm) at 4.8V

Operating speed: 0.21 sec/60 at 4.8V

Size: 1.59 x 0.79 x 1.42 (40.5 x 20 x 36.1 mm)

Weight: 1.48 oz (42 g)

Servo S3001 (Standard, ball-bearing)

Control system: Pulse width control, 1.52 ms neutral

Power requirement: 4.8 - 6.0V (from receiver)

Output torque: 41.7 oz-in (3.0 kg-cm)

Operating speed: 0.22 sec/60

Size: 1.59 x 0.78 x 1.41 (40.4 x 19.8 x 36 mm)

Weight: 1.59 oz (45.1g)

Servo S3003/S3004 (Standard/ball-bearing)

Control system: Pulse width control, 1.52 ms neutral

Power requirement: 4.8 - 6.0V (from receiver)

Output torque: 44.4 oz-in (3.2 kg-cm) at 4.8V

Operating speed: 0.23 sec/60 at 4.8V

Size: 1.59 x 0.78 x 1.41 (40.4 x 19.8 x 36 mm)

Weight: 1.31 oz (37.2 g)

9

CONTENTS AND TECHNICAL SPECIFICATIONS

(Specifications and ratings are subject to change without notice.)

Your 7CAP or 7CHP (packaged with a 7-channel PCM receiver or a 7-channel FM receiver) system includes

the following components:
The following additional accessories are available from your dealer. Refer to a Futaba catalog for more information:

• NT8S Transmitter battery pack - the (600mAh) transmitter Ni-Cd battery pack may be easily exchanged with a fresh

one to provide enough capacity for extended flying sessions.

• Trainer cord - the optional training cord may be used to help a beginning pilot learn to fly easily by placing the instructor on

a separate transmitter. Note that the 7C transmitter may be connected to another 7C system, as well as to many other models

of Futaba transmitters. The 7C transmitter uses the newer rectangular type cord plug. Both new-to-new and new-to-round plug

style trainer cords are available.

• FTA8 Neckstrap - a neckstrap may be connected to your T7C system to make it easier to handle and improve your flying

precision, since your hands won't need to support the transmitter's weight.

• Y-harnesses, servo extensions, etc - Genuine Futaba extensions and Y-harnesses, including a heavy-duty version with heavier

wire, are available to aid in your larger model and other installations.

• 5-cell (6.0V) receiver battery packs - All Futaba airborne equipment (except that which is specifically labeled otherwise) is

designed to work with 4.8V (Ni-Cd 4 cells) or 6.0V (Ni-Cd 5 cells or alkaline 4 cells). Using a 6.0V pack increases the current

flow to the servos, which accelerates their rate of response and their torque. However, because of this faster current draw, a 5-

cell battery pack of the same mAh rating will last approximately æ the time of a 4-cell pack.

• R309DPS - Synthesized receiver which can be changed to any 72MHz frequency with the turn of 2 dials, no tuning needed.

• Gyros-a variety of genuine Futaba gyros are available for your aircraft or helicopter needs. See p. 56 for aircraft or

p. 72 for helicopter gyro information.

10
TRANSMITTER CONTROLS - AIRPLANE

SW(B)

VR

SW(A)

SW(F)

SW(E)

SW(D)

SW(G)

This controls CH6, and if flaperon mixing

is activated controls the flap.

Flap Trim Control

Rudder Dual Rate Switch

Elevator Dual Rate Switch

/TH-CUT/P-MIX/TIMER

Snap Roll or

Trainer Switch

Landing Gear

Switch

/CH5

/CH7

Rudder

/Throttle

Stick

Power

LED*

Throttle

Trim Lever

Rudder

Trim Lever

LCD Panel

Power Switch

(Up position: ON)

Hook

(for optional neckstrap)

Edit Keys Edit keys

Aileron Trim Lever

Dial

Elevator Trim Lever

Elevator

/Aileron

Stick

Aileron Dual Rate Switch

Elevator - Flap Mixing or

Airbrake Mixing Switch

Carrying Handle

Antenna

Antenna must be fully extended when flying.

Be careful not to bend your antenna when you

collapse or extend it.

11

This figure shows the default switch assignments for a Mode 2 system as supplied by the factory.

You can change many of the switch positions or functions by selecting a new position within

the setting menu for the function you wish to move. (Example: move aileron dual rates to switch G

to create triple rates. See p. 34 for details.)

* Power LED blinks to indicate if any mix switches are activated.
TRANSMITTER CONTROLS - HELI

SW(B)

VR

SW(A)

SW(E)

SW(D)

SW(H)

SW(G)

Hovering - Pitch Knob

Rudder Dual Rate Switch

/CH7

Elevator Dual Rate Switch

/TH-CUT/P-MIX/TIMER

Idle-up 1&2 Switch

/CH5/OFFSET/GYRO

Throttle/Collective

Pitch & Rudder Stick

Throttle/Collective

Trim Lever

Power

LED*

Rudder

Trim Lever

LCD Panel

Power Switch

(Up position: ON)

Hook

(for optional neckstrap)

Edit Keys Edit keys

Aileron Trim Lever

Dial

Elevator Trim Lever

Elevator

/Aileron

Stick

Aileron Dual Rate Switch

Throttle - Hold Switch

Carrying Handle Trainer Switch

Antenna

Antenna must be fully extended when flying.

Be careful not to bend your antenna when you

collapse or extend it.

12

This figure shows the default switch assignments for a Mode 2 system as supplied by the factory.

You can change many of the switch positions or functions by selecting a new position within

the setting menu for the function you wish to move.

* Power LED blinks to indicate if any mix switches are activated.
Ni-Cd battery pack

Charging jack

Battery cover

Battery connector location

Trainer connector

Switch/Knob Airplane (ACRO) Helicopter (HELI)

A or H Tx.

SWITCH A elevator dual rate elevator dual rate

Switch B rudder dual rate rudder dual rate

up = ELE-FLPon

down = AIRBRAKEon

SWITCH D aileron dual rate aileron dual rate

Switch E OR G* landing gear/ch 5 throttle hold

Switch F OR H* snap roll/trainer trainer

SWITCH G OR E* idle-up 1 and 2,

ch5/OFFSET/GYRO

KNOB VR flap/ch 6 HOVERING PIT

(flap trim if FLAPERONon)

* On the 7CA (mode 2) transmitters, the Top Left Switches are spring-loaded switch and 2-position switch. On the 7CA (mode 1) and 7CH

transmitters, the Top Left Switch is a 3-position with the spring loaded switch on the top right.

NOTE: If you need to remove or replace the transmitter battery, do not pull on its wires to remove it. Instead,

gently pull on the connector's plastic housing where it plugs into the transmitter.

SWITCH ASSIGNMENT TABLE

• The factory default functions activated by the switches and knobs for a Mode 2 transmitter are shown below.

• Most 7C functions may be reassigned to non-default positions quickly and easily.

• Basic control assignments of channels 5 & 7 are quickly adjustable in PARA (see p. 28). For example, the channel 5

servo, which defaults to SWITCH E for retract use, can easily be unassigned (NULL) to allow for easy use as a second

rudder servo in a mix, or to a dial for bomb door or other control.

• Note that most functions need to be activated in the programming to operate.

• Mode 1 transmitter functions are similar but reverse certain switch commands. Always check that you have the desired

switch assignment for each function during set up.

13
Receiver Aircraft (ACRO) Helicopter (HELI)

Output and

Channel

1 ailerons/combined right flap & aileron1 aileron (cyclic roll)

2 elevator elevator (cyclic pitch)

3 throttle throttle

4 rudder rudder

5 spare/landing gear/combined left flap and aileron 1,2

1,2

1,2

spare/gyro

6 spare/ flap(s)/combined left flap and aileron pitch (collective pitch)

7 spare/combined left flap and aileron spare/governor

14

1

2

Flaperon mode. (See p. 43).

Within flaperon, the second aileron servo can be assigned to channel 5, 6 or 7. (See p. 43)

CHARGING THE Ni-Cd BATTERIES

Charging Your Systemís Batteries

1. Connect the transmitter charging jack and airborne Ni-Cd batteries to the transmitter and receiver connectors of the charger.

2. Plug the charger into a wall socket.

3. Check that the charger LED lights.

The initial charge, and any charge after a complete discharge,

should be at least 18 hours to ensure full charge. The batteries

should be left on charge for about 15 hours when recharging the

standard NR-4J, NR4F1500 and NT8S600B Ni-Cd batteries.

We recommend charging the batteries with the charger

supplied with your system. Note that the use of a fast charger

may damage the batteries by overheating and dramatically

reduce their lifetime.

You should fully discharge your system's Ni-Cd batteries periodically to prevent a condition called memory. For

example, if you only make two flights each session, or you regularly use only a small amount of the batteries' capacity, the

memory effect can reduce the actual capacity even if the battery is fully charged. You can cycle your batteries with a commercial

cycling unit*, or by leaving the system on and exercising the servos by moving the transmitter sticks until the transmitter shuts

itself off. Cycling should be done every four to eight weeks, even during the winter or periods of long storage. Keep track of the

batteries' capacity during cycling; if there is a noticeable change, you may need to replace the batteries.

*Note that your 7C transmitter system is protected from accidental reverse polarity, power surges and other electrical

damage by a diode. The transmitter battery must be removed from the system to cycle. The battery easily unplugs from the

battery compartment and has a standard J-plug for easy cycling.

DO NOT attempt to charge your 8-cell transmitter pack on the 4-cell receiver plug of the wall charger!

Charger

TX: Transmitter charging indicator

RX: Receiver charging indicator

To transmitter charging jack

Receiver Ni-Cd battery

RECEIVER AND SERVO CONNECTIONS
15

Adjusting the length of the non-slip control sticks

You may change the length of the control sticks to make your transmitter more

comfortable to hold and operate. To lengthen or shorten your transmitterís sticks,

first unlock the stick tip by holding locking piece B and turning stick tip A

counterclockwise. Next, move both pieces up or down (to lengthen or shorten).

When the length feels comfortable, lock the position by turning locking

piece B counterclockwise, while holding piece A.

Stick lever tension adjustment

You may adjust the tension of your sticks to provide the feel that you prefer for flying.

Adjusting Display Contrast

To adjust the display contrast, from the home menu press and hold the End button.

Turn the dial while still holding End button:

clockwise to brighten

counterclockwise to darken the display

Let go off the dial and the button.

Changing Modes:

Hold down the MODE and End buttons while turning on the transmitter. The screen reads "STK-MD". Change this to

the correct mode. Note that this will NOT change the throttle and elevator rachets, etc. Those are mechanical changes

that must be done by a service center.

To adjust your springs, youíll have

to remove the rear case of the transmitter. First, remove the battery cover on the rear of the transmitter. Next, unplug the

battery wire and remove the battery from the transmitter.

Next, using a screwdriver, remove the four screws

that hold the transmitterís rear cover in position, and put them in a safe place. Gently ease off the transmitterís rear cover.

Now you'll see the view shown in the figure above.

Using a small Phillips screwdriver, rotate the adjusting screw for each stick for the desired spring tension. The tension

increases when the adjusting screw is turned clockwise.

When you are satisfied with the spring tensions, reattach the transmitter's rear cover. Check that the upper printed circuit

board is on its locating pins.

When the cover is properly in place, reinstall and tighten the four screws. Reinstall the battery cover.

Stick tip A Locking piece B

Aileron

Elevator

Stick Stick Rudder

Mode 2 transmitter with rear cover removed.
RADIO INSTALLATION

While you are installing the battery, receiver, switch harness and servos into your model's fuselage, please pay attention to

the following guidelines:

Use the supplied rubber grommets when you mount each servo. Be sure not to

over-tighten the screws. If any portion of the servo case directly contacts the fuselage or

the servo rails, the rubber grommets will not dampen the vibration, which can cause

mechanical wear and servo failure.

Servo Throw

Once you have installed the servos, operate each one over its full travel and check that the pushrod and output

arms do not bind or collide with each other, even at extreme trim settings. Check to see that each control linkage does

not require undue force to move (if you hear a servo buzzing when there is no transmitter control motion, most likely there

is too much friction in the control or pushrod). Even though the servo will tolerate loads, any unnecessary load applied to

the servo arm will drain the battery pack quickly.

Switch Harness Installation

When you are ready to install the switch harness, remove the switch cover and use it as a template to cut screw holes

and a rectangular hole slightly larger than the full stroke of the switch. Choose a switch location on the opposite side of

the fuselage from the engine exhaust pipe, and pick a location where it canít be inadvertently turned on or off during

handling or storage. Install the switch so it moves without restriction and snaps from ON to OFF and vice versa.

Receiver Antenna

It is normal for the receiver antenna to be longer than the fuselage.

DO NOT cut or fold it back on itself --- cutting or folding changes the electrical length of the antenna and may

reduce range. Secure the antenna to the top of the vertical fin, and let the excess wire length trail behind. You may run the

antenna inside of a non-metallic housing within the fuselage, but range may suffer if the antenna is located near metal or

carbon fiber pushrods or cables. Be sure to perform a range check before flying.

Receiver Notes

When you insert servo, switch or battery connectors into the receiver, note that each plastic housing has an

alignment tab. Be sure the alignment tab is oriented properly before inserting the connector. To remove a connector

from the receiver, pull on the connector housing rather than the wires.

If your aileron servo (or others) are too far away to plug into the receiver, use an aileron extension cord to extend the length

of the servo lead. Additional Futaba extension cords of varying lengths are available from your hobby dealer. Always use an

extension of the proper length. Avoid plugging multiple extensions together to attain your desired length. If distance is greater than

18" or multiple or high current draw servos are being used, use Futaba Heavy-Duty servo extensions.

Receiver Vibration and Waterproofing

The receiver contains precision electronic parts. Be sure to avoid vibration, shock, and temperature extremes.

For protection, wrap the receiver in foam rubber or other vibration-absorbing materials. It is also a good idea

to waterproof the receiver by placing it in a plastic bag and securing the open end of the bag with a rubber band before

wrapping it with foam rubber. If you accidentally get moisture or fuel inside the receiver, you may experience intermittent

operation or a crash. If in doubt, send the receiver for service.

Wood screw

Rubber grommet

Brass eyelet

Servo mount or rail

16
Range Testing Your R/C System

Please note that different systems demonstrate different range checks and the same system will range check differently in different

conditions. Also, the receiver antenna's installation affects the range test -- exiting the top of the model is ideal.

This is a brief explanation of range test. For more in-depth specifics on receiver antenna mounting, additional checks if

unsatisfactory range is demonstrated, range checking with gasoline powered engines, etc, please see our F.A.Q. page at

www.futaba-rc.com.

• Leave the transmitter's antenna retracted and be sure both batteries are fully charged.

• Position the aircraft away from wires, other transmitters, etc.

Test one - engine/motor off, minimum of 100 ft. range

• Have a friend view the model but not hold it, engine off. (People conduct signals, too!)

• Walk away from the model, working all controls constantly. Stop when the servos jitter significantly (a jitter here and

there is normal), control movement stops (PCM), or you lose control altogether.

• Measure the distance. If greater than 100 feet, great! Proceed to Test 2. Less than 100 feet of range check means you

need more information to determine if your system is safe to fly. Please see our web site or call support for additional

tests to perform before flying your system.

• Repeat with friend holding the model. Note any differences.

Test two - engine/motor on

• Repeat the test with the model's engine running and with someone holding the model. If a decrease of more than 10%

is noted, research and resolve the cause of interference prior to flying your model.

What your fully operational system demonstrates is the normal range for your system in those conditions. Before every flying

session, it is critical that you perform a range check. It is also required by the AMA Safety Code. If you notice a significant

decrease in range with fully charged batteries, do not attempt to fly.

Aircraft (fixed wing and helicopter) Frequencies

17

72 MHz band

Ch. MHz Ch. MHz

11 72.010 36 72.510

12 72.030 37 72.530

13 72.050 38 72.550

14 72.070 39 72.570

15 72.090 40 72.590

16 72.110 41 72.610

17 72.130 42 72.630

18 72.150 43 72.650

19 72.170 44 72.670

20 72.190 45 72.690

21 72.210 46 72.710

22 72.230 47 72.730

23 72.250 48 72.750

24 72.270 49 72.770

25 72.290 50 72.790

26 72.310 51 72.810

27 72.330 52 72.830

28 72.350 53 72.850

29 72.370 54 72.870

30 72.390 55 72.890

31 72.410 56 72.910

32 72.430 57 72.930

33 72.450 58 72.950

34 72.470 59 72.970

35 72.490 60 72.990

50 MHz Band (Amateur Radio Operator "HAM" license required)

Ch. MHz Ch. MHz

00 50.800 01 50.820

02 50.840 03 50.860

04 50.880 05 50.900

06 50.920 07 50.940

08 50.960 09 50.980

Installing your frequency number flag:

It is very important that you display your

transmitting channel number at all times. To install your

flag, peel off the channel number's backing sheet, and carefully

stick the numbers to both sides of the number holder. Now you

can snap the number holder onto the lower portion of the

antenna as shown in the figure --- use the clip that fits more

snugly on your antenna. You may wish to cut off the other,

unused clip on the other side of the flag.

The following frequencies and channel numbers may be used for flying aircraft in the United States:
TRANSMITTER DISPLAYS & BUTTONS

When you first turn on your transmitter, a confirmation double beep sounds, and the screen shown below appears. Before

flying, or even starting the engine, be sure that the model type and name appearing on the display matches the model that

you are about to fly! If you are in the wrong model memory, servos may be reversed, and travels and trims will be wrong,

leading to an immediate crash.

Edit buttons and Start-up Screen (appears when system is first turned on):

MODE/PAGE BUTTON: (key)

Press and hold MODE BUTTON for one second to open programming menus. Press MODE BUTTON to switch between

BASIC and ADVANCE menus. HELI only: Press MODE BUTTON to scroll between conditions in certain functions.

END BUTTON: ( key)

Press END BUTTON to return to previous screen. Closes functions back to menus, closes menus to start-up screen.

SELECT/CURSOR BUTTONS: ( key)

Press SELECT/CURSOR BUTTON to scroll through and select the option to edit within a function.

Press SELECT/CURSOR BUTTON to page up/page down within BASIC or ADVANCE menu.

Turn Dial:

Turn DIAL clockwise or counterclockwise to quickly scroll through functions within each menu.

Turn DIAL clockwise or counterclockwise to scroll through choices within an option of a function (for example, to

select which switch controls dual/triple rates).

Press Dial:

Press DIAL to select the actual function you wish to edit from the menu.

Press DIAL and hold one second to confirm major decisions, such as the decision to: select a different model from

memory, copy one model memory over another, trim reset, store channel position in FailSafe, change model type, reset

entire model. System will ask if you are sure. Press DIAL again to accept change.

18

Mode

key

End

key

Rudder trim

display

Throttle trim

display

Elevator trim

display Model

name

Model

number

Modulation indicator

(PCM shown)

Aileron trim

display Select

keys

Battery voltage

Dial
WARNING & ERROR DISPLAYS

An alarm or error indication may appear on the display of your transmitter for several reasons, including when the

transmitter power switch is turned on, when the battery voltage is low, and several others. Each display has a unique sound

associated with it, as described below.

LOW BATTERY ERROR: Warning sound: Continuous beep until transmitter is powered off.

The LOW BATTERY warning is displayed when the transmitter battery voltage drops below 8.5V.

Land your model as soon as possible before loss of control due to a dead battery.

MIXER ALERT WARNING: Warning sound: 5 Beeps (repeated until problem resolved or overridden)

The MIXER ALERT warning is displayed to alert you whenever you turn on the transmitter with any of the

mixing switches active. This warning will disappear when the offending switch or control is deactivated.

Switches for which warnings will be issued at power-up are listed below:

ACRO: Throttle cut, snap roll, airbrake HELI: Throttle hold, idle-up

If turning a switch OFF does not stop the mixing warning: When the warning does not stop even when the mixing switch

indicated by the warning display on the screen is turned off, the functions described previously probably use the same

switch and the OFF direction setting is reversed. In short, one of the mixings described above is not in the OFF state. In

this case, reset the warning display by pressing both SELECT BUTTONS simultaneously. Then change one of the switch

settings of the mixings duplicated at one switch.

BACKUP ERROR: Warning sound: 4 beeps (repeated continuously)

The BACKUP ERROR warning occurs when the transmitter memory is lost for any reason. If this occurs, all of the data will

be reset when the power is turned on again.

Do not fly when this message is displayed - all programming has been erased and is not

available. Return your transmitter to Futaba for service.

19

flash

flash

flash
AIRCRAFT (ACRO) MENU FUNCTIONS

Please note that all BASIC menu functions are the same for airplanes (ACRO) and helicopters (H-1/H-2/HR3/HN3/H-3/HE3).

; the helicopter BASIC menu includes additional features (swashplate adjustment and throttle/pitch curves and revo for Normal

20

AIRPLANE (ACRO) FUNCTIONS . . . . . . . . . . . . . . . .20

Map of Basic Functions. . . . . . . . . . . . . . . . . . . . . . .21

Quick Guide to Setting up a 4-channel Airplane . . . .22

ACRO BASICMENU FUNCTIONS . . . . . . . . . . . . . . . .25

MODEL Submenu: MODEL SEL. , COPY and NAME . .25

Parameter(PARA.) Submenu: RESET,TYPE,MODUL,

CH5 & CH7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Servo REVERSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

End Point (E. POINT) . . . . . . . . . . . . . . . . . . . . . . . .32

Idle Management: THR-CUT . . . . . . . . . . . . . . . . . . .33

Dual Rates and Exponential ( D/R,EXP ) . . . . . . . . . .34

TIMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

TRAINER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

TRIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

SUB-TRIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Fail Safe (F/S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

ACRO ADVANCE MENU FUNCTIONS . . . . . . . . . . . .42

Wing types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Flaperon (FLAPRN) . . . . . . . . . . . . . . . . . . .43

Flap Trim (FL-TRIM) . . . . . . . . . . . . . . . . . . .44

ELEVON (see tail types) . . . . . . . . . . . . . . . . . . .45

Tail types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

ELEVON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

V-TAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

SNAP ROLL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Mixes: definitions and types . . . . . . . . . . . . . . . . . . .48

ELE-FLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Air Brake (A.BRAKE) . . . . . . . . . . . . . . . . . . . . .52

FLP-ELE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

AIL-RUD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Prog. Mixes (P-MIX1-3) . . . . . . . . . . . . . . . . .53

flight mode) that are discussed in the Helicopter section.
21

(Basic Menu 1)

(Basic Menu 2)

(Basic Menu 3)

Select

(Cursor)

Select

(Cursor)

ACRO Basic Menu

ACRO

ADVANCE

Menu

End

Mode/Page To enter the Basic Menu, press the

Mode key for one second.

( for one second)

(Startup screen)

To return to the Startup screen, press the

End key.

Press Select/Cursor keys to page up and down through the 3 pages of

screens in each menu.

Note FAIL SAFE only shows if the transmitter is set

to transmit in PCM.

Press Mode/Page key to toggle back

and forth between BASIC and

ADVANCE menus.

Mode/Page

Mode/Page Select

End Selection

Cursor Down

Cursor Up

Dial Left

Dial Right

Dial Right or Left

Press Button

Switch Up

Switch at Center

Switch Down

Stick Up

Stick Right

Stick Down

Stick Left

Turn Knob Right

Turn Knob Left

Turn the Dial clockwise or counterclockwise to

highlight function in Menu screen. Then press the

Dial to choose that function.
A QUICK GUIDE: GETTING STARTED WITH A BASIC 4-CHANNEL AIRCRAFT

This guide is intended to help you get acquainted with the radio, to give you a jump start on using your new radio, and to give you

some ideas and direction in how to do even more than you may have already considered. It follows our basic format of all

programming pages: a big picture overview of what we accomplish; a "by name" description of what we're doing to help acquaint

you with the radio; then a step-by-step instruction to leave out the mystery when setting up your model.

For additional details on each function, see that function's section in this manual. The page numbers are indicated in the

goals column as a convenience to you.

See p.21 for a legend of symbols used.

GOALS of EXAMPLE STEPS INPUTS for EXAMPLE

Prepare your aircraft. Install all servos, switches, receivers per your model's instructions.

Turn on transmitter then receiver; adjust all linkages so surfaces are nearly centered.

Mechanically adjust all linkages as close as possible to proper control throws.

Check servo direction.

Make notes now of what you will need to change during programming.

22

Name the model.

P. 25.

[Note that you do not need to do

anything to "save" or store this data.

Only critical changes such as a MODEL

RESET require additional keystrokes to

accept the change.]

Reverse servos as needed for proper

control operation.

P. 31.

Adjust Travels as needed to match

model's recommended throws (usually

listed as high rates). P. 32.

Open the BASIC menu, then open the

MODEL submenu.

Go to MODEL NAME.

Input aircraft's name.

Close the MODELsubmenu.

In the BASIC menu, open (servo)

REVERSE.

Choose desired servo and reverse its

direction of travel. (Ex: reversing

rudder servo.)

From BASIC menu, choose END POINT.

Adjust the servo's end points.

(Ex: throttle servo)

Close the function.

Turn on the transmitter.

for 1 second. (If ADVANCE, again.)

as needed to highlight MODEL.

to choose MODEL.

to NAME.

(First character of model's name is flashed.)

to change first character.

When proper character is displayed,

to move to next character.

Repeat as needed.

to return to BASIC menu.

4 steps to REVERSE.

to choose REVERSE.

to CH4: RUDD.

so REV is selected.

Repeat as needed.

2 steps to END POINT.

to choose END POINT.

to THROTTLE.

THROTTLE STICK.

until carb barrel closes as desired.

THROTTLE STICK.

until throttle arm just opens carb

fully at full THROTTLE STICK.

Repeat for each channel as needed.
With digital trims you don't shut the engine off with THROTTLE TRIM. Let's set up throttle cut (THR-CUT) now.

GOALS of EXAMPLE STEPS INPUTS for EXAMPLE

23

THR-CUTshuts the engine off completely

with the flip of a switch. P. 33.

Set up dual/triple rates and

exponential (D/R,EXP).

P. 34.

(Note that in the middle of

the screen is the name of the

channel AND the switch position you

are adjusting. Two or even THREE

rates may be set per channel by

simply choosing the desired switch

and programming percentages with

the switch in each of its 2 or 3

positions.)

From the BASIC menu, choose THR-CUT.

Activate, assign SWITCH and adjust.

Close the function.

From the BASIC menu, choose

D/R,EXP.

Choose the desired control, and set the

first (Ex: high) rate throws and

exponential.

to THR-CUT.

to choose THR-CUT.

to OFF. to SW.

to desired switch and position.

(default: A and down position)

to RATE . A to down position.

THROTTLE STICK.

until throttle barrel closes

completely.

to D/R,EXP.

to choose D/R,EXP.

A to up position.

to CH>.

to choose CH>2 (elevator).

to D/R.

to set desired percentage.

to EXP.

to set desired percentage.

for 1 second. (If ADVANCE, again.)
GOALS of EXAMPLE STEPS INPUTS for EXAMPLE

24

Where next?

Set the second (low) rate throws and

exponential.

Optional: change dual rate switch

assignment. Ex: elevator to switch G

(7CA) or E (7CH) with 3 positions.

A to down position.

to D/R.

Repeat steps above to set low rate.

to SW. to G or E.

G or E to center position.

Repeat steps above to set 3rd rate.

(Other functions you may wish to set up for your model.)

TRAINER p. 38.

Multiple wing and/or tail servos: see wing types and tail types, p. 42, 45.

Elevator-to-flap, flap-to-elevator , and other programmable mixes p. 48.

Retractable Gear, Flaps on a Switch, Smoke systems, kill switches,

auxiliary channel (ch5 and ch7) setups. p. 28.
A LOOK AT THE RADIO'S FUNCTIONS STEP BY STEP

MODELsubmenu: includes three functions that manage model memory: MODEL SELECT, MODEL COPY and MODEL NAME.

Since these functions are all related, and are all basic features used with most models, they are together in the MODEL

submenu of the BASIC menu.

MODEL SELECT: This function selects which of the 10 model memories in the

transmitter to set up or fly.

(Each model memory may be of a different model type from the other memories.)

GOAL: STEPS: INPUTS:

NOTE: When you choose a new model in the

MODEL SELECT function, if the new model is set to

the other modulation, you must cycle the transmitter

power to change modulations. If you do not cycle

the power, the modulation type will flash on the

home screen to remind you. You are still

transmitting on the other modulation until you affect

this change.

25

Select Model #3.

NOTE: This is one of several functions

for which the radio requires

confirmation to make a change.

Open BASIC menu, then open MODEL

submenu.

Choose Model #3.

Confirm your change.

Close.

for 1 second. (If ADVANCE, again.)

if required to MODEL.

to 3.

for 1 second.

sure? displays.

Confirm proper modulation of new

model memory.

Where next?

If PPM or PCMare flashing in the middle of the lower side, then the new model is set

for the other receiver type. Turn the transmitter off/on to change the modulation.

NAME the model: see p. 27.

Change MODEL TYPE (aircraft, heli): see p. 28.

Change modulation [FM (PPM) or PCM]: see p. 28.

Utilize servo REVERSE: see p. 31.

Adjust END POINTs: see p. 32.

Set up TH-CUT for throttle management: see p. 33.

FLASHING
MODEL COPY: copies the current model data into another model memory in the transmitter.

The number of the model memory you are copying from and into is displayed.

Notes:

• Any data in the model copied to will be written over and lost, including name, type and

modulation. It cannot be recovered.

• With the trainer FUNC mode it is not necessary to have the student radio contain the

setup of the aircraft. See TRAINER, p. 38.

Examples:

• Start a new model that is similar to one you have already programmed.

• Copy the current model data into another model memory as a backup or before experimenting with new settings.

• Edit a copy of your modelís data to fly the model in different conditions (i.e. Helicopter using heavier weight blades;

airplane model at extreme altitudes).

GOAL of EXAMPLE: STEPS: INPUTS:

*Radio shows progress on screen as the model memory is being copied. Note that if the power switch is turned off prior to completion,

the data will not be copied.

26

Copy model 3 into model 5.

NOTE: This is one of several

functions for which the radio requires

confirmation to make a change.

Where next?

Open the BASIC menu, then open

MODEL submenu.

Confirm you are currently using the

proper model memory. (Ex: 3)

Go to MODEL COPY and choose the

model to copy into. (Ex: 5)

Confirm your change.

Close.

for 1 second. (If ADVANCE, again.)

to MODEL.

If SELECT does not indicate 3,

use MODEL SELECT, p. 25.

to 5.

for 1 second.

sure? displays. *

SELECT the copy you just made: see p. 25.

Rename it (it is currently named exactly the same as the model copied): see p. 25.
MODEL NAME: assigns a name to the current model memory. By giving each model a name that is immediately

recognizable, you can easily comfirm the correct model, and minimize the chance of flying the wrong model memory which

could lead to a crash.

Adjustability and values:

• Up to 6 characters long.

• Each character may be a letter, number, blank, or a symbol.

• The default names assigned by the factory are in MDL-xx format (MDL-01 for

first model memory, etc.)

NOTE: When you COPY one model memory over another, everything is copied, including the model's name. Similarly, if you

change MODEL TYPE or do a MODEL RESET, the entire memory is reset, including MODEL NAME. So the first thing you will want

to do after you COPY a model, change its type, or start from scratch, is rename the new copy to avoid confusion.

GOAL of EXAMPLE: STEPS: INPUTS:

27

Name model 3 "CAP-01" (where

the underline represents a blank

space.)

Where next?

Open MODEL submenu.

Confirm you are currently using the

proper model memory. (Ex: 3)

Go to NAME and change the first

character. (Ex: M to C)

Choose the next character to change.

Repeat the prior steps to complete

naming the model.

Close.

for 1 second. (If ADVANCE, again.)

to MODEL.

If SELECTdoes not indicate 3,

perform MODEL SELECT, p. 25.

to C.

to A

Repeat.

Change the MODEL TYPE to helicopter: see p. 28.

Change the receiver modulation setting from PPM to PCM or vice versa: see p. 28.

Utilize servo REVERSE : see p. 31.

Adjust servo travel with END POINT : see p. 32.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.
PARAMETER submenu: sets those parameters you would likely set once, and then not disturb again.

Once you have selected the correct model you wish to work with, the next step is

setting up the proper parameters for this specific model:

• What is the model's type?

• What type is the receiver's modulation [PPM(FM) or PCM]?

• Assign the desired SW to CH5 and CH7.

First it is important to clear out any old settings in the memory from prior use, using the MODEL RESET.

MODEL RESET: completely resets all data in the individual model you have currently selected. Don't worry - there is no way

you can accidentally delete all models in your radio with this function. Only a service center can completely reset your

radio's entire memory at once. To delete each model in your radio's memory (for example when selling), you must SELECT

each model, reset that memory, then go SELECT the next memory, etc.

Note that when you COPY one model memory into another or change the model's type, you need not delete all existing data

first by using this function. COPY completely overwrites anything in the existing model memory, including MODEL NAME.

The MODEL TYPE function overwrites all data except name and MODUL.

GOAL of EXAMPLE: STEPS: INPUTS:

*Radio shows progress on screen as the model memory is being reset. Note that if the power switch is turned off prior to completion,

the data will not be reset.

28

Reset model memory 1.

NOTE: This is one of several

functions for which the radio requires

confirmation to make a change.

Where next?

Confirm you are currently using the

proper model memory. (Ex: 1)

Open PARAMETER submenu.

Reset the Memory.

Confirm the change.

Close.

On home screen, check model name

and number on top right. If it is not

correct, use MODEL SELECT, p. 25.

for 1 second. (If ADVANCE, again.)

to 3rd page of menu.

to PARAMETER.

for one second.

sure? displays. *

Now that the memory is reset, name has returned to the default (Ex: MDL-01).

NAME the model: p. 25.

COPY a different model into this memory: p. 25.

SELECT a different model to edit or delete: p. 25.

Change the MODEL TYPE to helicopter: see p. 28.

Change the receiver modulation from FM(PPM) to PCM or vice versa: see p. 28.

Utilize servo REVERSE: see p. 31.

Adjust servo travel with END POINT: see p. 32.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.
MODEL TYPE: sets the type of programming used for this model.

The 7C has 10 model memories, which can each support:

• one powered aircraft (ACRO) memory type (with multiple wing and tail

configurations. See FRAPERON, ELEVON and V-TAIL for further information.);

• six helicopter swashplate types, including CCPM. See Helicopter MODELTYPE

for details, p. 61.

Before doing anything else to set up your aircraft, first you must decide which MODEL TYPE best fits this particular aircraft.

(Each model memory may be set to a different model type.) If your transmitter is a 7CA, the default is ACRO. If it is a 7CH,

the default is H-1.

If you are using a heli MODEL TYPE, please go to that chapter now to select the proper model type and support

your model setup. Note that changing MODEL TYPE resets all data for the model memory, including its name.

GOAL of EXAMPLE: STEPS: INPUTS:

29

Select the proper MODEL TYPE for your

model. Ex: ACRO.

[NOTE: This is one of several functions

that requires confirmation to make a

change. Only critical changes require

additional keystrokes to accept

the change.]

Open the BASIC menu, then open the

PARAMETER submenu.

Go to MODEL TYPE.

Select proper MODEL TYPE.

Ex: ACRO.

Confirm the change. Close PARAMETER.

Turn on the transmitter.

for 1 second. (If ADVANCE, again.)

then to highlight PARAMETER.

to choose PARAMETER.

to TYPE.

to ACRO. for 1 second.

sure? displays. to confirm.

to return to BASIC menu.
Modulation select (MODUL): sets the type of modulation transmitted.

The modulation of your receiver will determine whether you utilize PPM or PCM setting in MODUL during transmission.

Note that you have to turn your transmitter off and back on before a modulation change becomes effective. If you choose

PCM, be sure you understand and set the FailSafe (F/S) settings as you intended (see p. 41).

PCM= Pulse Code Modulation PPM= Pulse Position Modulation (also called FM).

Adjustability:

• PCM setting for all Futaba PCM1024 receivers, regardless of number of channels

(ie.R138DP/148DP/149DP, R309DPS);

• PPM setting for all Futaba compatible (negative shift) FM receivers, regardless of

number of channels (ie. R127DF, R123F, R148DF).

• Not compatible with PCM512 receivers such as the R128DP and R105iP.

• Not compatible with other brands of PCM receiver, or positive shift FM receivers

(ie. JR, Airtronics).

GOAL of EXAMPLE: STEPS: INPUTS:

NOTE: When you change models in MODEL SELECT, if the

new model is set to the other modulation type, you must

cycle the transmitter power to change modulations. The

modulation will flash on the home screen to remind you

until you do so. See p. 25, MODEL SELECT, for details.

30

Change model 1 from FM (PPM) to

PCM

Where next?

Confirm you are currently using the

proper model memory (Ex: 1)

Open BASIC menu, then open

PARAMETER submenu.

Go to MODUL and change setting.

Close menu and cycle power.

On home screen, check model name and

number on top and the modulation

on bottom. If it is not the correct

model, use MODEL SELECT, p. 25.

for 1 second. (If ADVANCE, again.)

to 3rd page of menu.

to PARAMETER.

to MODUL. to PCM.

PCM flashes on screen

POWER OFF. POWER ON.

Now that the model is in the proper modulation, the 7C should communicate

with the receiver. If it does not, confirm the modulation/frequency of the

receiver. [Futaba receivers ending in F use PPM(ex: R127DF), ending in P use

PCM (ex: R149DP)].

Change MODEL TYPE to helicopter: see p. 28.

Set F/S settings for when PCM receiver sees interference: see p. 41.

Utilize servo REVERSE: see p. 31.

Adjust servo travel with END POINT: see p. 32.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.
Servo reversing (REVERSE): changes the direction an individual servo responds to a CONTROL STICKmotion.

For CCPM helicopters, be sure to read the section on SWASH AFR (p. 63) before reversing any servos.

Except with CCPM helicopters, always complete your servo reversing prior to any

other programming. If you use pre-built ACRO functions that control multiple servos,

such as FLAPERON or V-TAIL, it may be confusing to tell whether the servoneeds to be

reversed or a setting in the function needs to be reversed. See the instructions for each

specialized function for further details.

Always check servo direction prior to every flight as an additional precaution to confirm proper model memory,

hook ups, and radio function.

NOTE: THR-REV is a special function that reverses the entire throttle control, including moving the trim functionality to the

Stick's upper half. To use THR-REV, turn off the transmitter, hold down the MODE and END keys, turn on. CURSOR DOWN to

THR-REV and turn the DIAL to REV. Turn the transmitter off and back on. This change affects all models in the radio.

GOAL of EXAMPLE: STEPS: INPUTS:

31

Reverse the direction of the elevator

servo.

Where next?

Open REVERSE function.

Choose proper channel and set

direction. (Ex: ELE REV)

Close.

for 1 second. (If ADVANCE, again.)

to REVERSE.

to ELE.

to REV.

to D.

to PARAMETER.

to CH5-SW.

for 1 second. (If ADVANCE, again.)

GOAL of EXAMPLE: STEPS: INPUTS:

Change channel 5 to switch D. Open BASIC menu then PARAMETER

submenu.

Go to channel 5 switch assignment.

Change to D.

Close.

Adjust servo travel with END POINT: see p. 32.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.

Set up flight timers: see p. 37.

Set up trainer functions: see p. 38.

Auxiliary channel function (CH5 and CH7): defines the relationship between the transmitter

controls and the receiver output for channels 5 and 7.

Adjustability:

• channels 5 and 7 may be assigned to any SWITCH (A-H) or none (null).

(for example, moving flaps to a switch)

• multiple channels may be assigned to the same switch.

• channels set to "NULL" are only controlled by mixes.

Remember that if you assign primary control of a channel to a switch which you later use for other functions (like

dual/triple rates or airbrakes), every time you use that other function you will also be moving the auxiliary channel.
End Point of servo travel adjustment (E.POINT , also called EPA): the most flexible version of travel adjustment

available. It independently adjusts each end of each individual servoís travel, rather than one setting for the servo that

affects both directions. Again, for CCPM helicopters, be sure to see SWASH AFR (see p. 63) prior to adjusting end points.

Adjustability:

• Can set each direction independently.

• Ranges from 0% (no servo movement at all) to 140%. At a 100% setting, the throw of

the servo is approximately 40o for channels 1-4 and approximately 55o for channels 5-8.

• Reducing the percentage settings reduces the total servo throw in that direction.

Examples:

• Adjust the throttle high end to avoid binding at the carburetor, and low end to allow for proper carburetor closure.

• Adjust flap so up travel is only sufficient for straight and level flight trimming, with full down travel.

• END POINT may be adjusted to 0 to keep a servo from moving one direction, such as flaps not intended to also operate

as spoilers.

• Retract servos are not proportional. Changing END POINT will not adjust the servo.

END POINT adjusts only the individual servo. It will have noeffect on any other servo that is operated in conjunction with

this servo via mix or preset programming such as FLAPERON , etc. This is so that each individual servo can be

carefully fine-tuned to avoid binding and other conflicts. To adjust the total travel of a function such as FLAPERON, make

the adjustments in that function's controls. For CCPM helicopters, adjust the total travel of the function, such as collective

pitch, in SWASH AFR.

Adjust the linkage or the END POINT? It is nearly always best to adjust your linkages to get as close as possible prior to

utilizing END POINT. The higher the END POINT setting, the better position accuracy and the more servo power available at

nearly any position (except if using digital servos). Higher END POINT values also mean longer travel time to reach the

desired position, as you are utilizing more of the servo's total travel. (For example, using 50% END POINT would give you

only half the steps of servo travel, meaning every click of trim has twice the effect and the servo gets there in half the time).

• end point (and moving the linkage) = torque, accuracy, but transit time to get there.

• end point (instead of adjusting linkages) = travel time, but torque, accuracy.

GOAL of EXAMPLE: STEPS: INPUTS:

*You can reset to the initial values by pressing the DIAL for one second.

32

Decrease the flap servo throw in the

upward direction to 5% to allow

trimming of level flight only and down

travel to 85% to prevent binding.

Where next?

Open END POINT function.

Choose proper channel and set

direction. (Ex: flap up 5%)

Close.

for 1 second. (If ADVANCE, again.)

to END POINT.

to flap.

flap control [default is VR ].

to 5%.*

VR to 85%.

Move auxiliary channels 5 or 7 to different switch(es): see p. 28.

Set up THR-CUT to cut the engine: see p. 33.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.

Set up flight timers: see p. 37.

Set up trainer functions: see p. 38.

Set up twin aileron servos: see p. 43.
Throttle cut (TH-CUT ) (ACRO/HELI): provides an easy way to stop the engine by flipping a switch (with THROTTLE STICK

at idle). The movement is largest at idle and disappears at high throttle to avoid accidental dead sticks. In HELI, there is an

additional setting, TH-CUT See p. 66.

*Normally, a setting of 10-20% is sufficient. Viewing the carburetor barrel until it fully closes is adequate to get an approximate setting; then test with

engine running to confirm.

33

Engine idle management: THR-CUT: functions which work with the digital THROTTLE TRIM to provide a simple,

consistent means of engine operation. No more fussing with getting trim in just the right spot for landings!

GOAL of EXAMPLE: STEPS: INPUTS:

Decrease the throttle setting (at idle) to

stop the engine with the flip of a switch.

(default: SWITCH A in the down

position)

Where next?

Open BASIC menu, then open

THR-CUT function.

Activate the function. Choose desired

switch, and the position which

activates the function.

With THROTTLE STICK at idle, adjust the

rate until the engine consistently shuts

off but throttle linkage is not binding.*

Close.

for 1 second. (If ADVANCE, again.)

to THR-CUT.

to ON(OFF).

to SW.

A to down position.

THROTTLE STICK.

to RATE. until shuts off.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.

Set up TRAINER functions: see p. 38.

Set up twin aileron servos: see p. 43.

to select the desired

switch and position.
Dual/triple rates and exponential (D/R,EXP): assigns adjusted rates and exponential.

Dual/Triple Rates: reduce/increase the servo travel by flipping a switch,

or (ACRO) they can be engaged by any stick position. Dual rates affect the control

listed, such as aileron, not just a single (ex: channel 1) servo. For example, adjusting

aileron dual rate will affect both aileron servos when using FLAPERON, ELEVON, and

a CCPM helicopter.

Activation:

• Any SWITCH, A-H. If you choose a 3-position switch, then that dual rate instantly becomes a triple rate (see example).

• Stick position (ACRO). (Ex: On rudder you normally use only the center 3/4 of the stick movement except

for extreme maneuvers such as snaps/spins/stalls. As long as your RUDDER STICK does not exceed 90% of maximum

throw, the rudder responds at your lower rate, allowing small, gentle corrections. When the stick passes 90% (ie. stall

turn), the rudder goes to high rate's 90%, which is a MUCH higher amount of travel than your low rate at 89%.)

Ex: EPA = 1" Low Rate = 50% High Rate = 100%

At 89% Low Rate = .45"

At 90% High Rate = .9"

Adjustability:

• Range: 0 - 140% (0 setting would deactivate the control completely.)

Initial value=100%

Exponential: changes the response curve of the servos relative to the stick position to make flying more pleasant. You

can make the servo movement less or more sensitive around neutral for rudder, aileron, elevator, and throttle (except HELI

type - use THROTTLE CURVE instead).

Why use expo? Many models require a large amount of travel to perform their best tricks. However, without exponential,

they are ìtouchyî around neutral, making them unpleasant to fly and making small corrections very dif ficult. Additionally,

by setting different exponentials for each rate, you can make the effectiveness of small corrections similar in each rate, as

in our example below.

The best way to understand exponential is to try it:

• Having made no changes yet in the D/R,EXP screen, move SWITCH D to "down" (toward the AILERON STICK).

• Cursor down to EXP and dial to 100%.

• Move SWITCH D up. Hold the AILERON STICK at 1/4 stick and move SWITCH D down.

• Notice how much less travel there is.

• Go to 3/4 stick and repeat. Notice how the travel is much closer, if not identical.

High Rate

High Rate

Low Rate High Rate

Low Rate

100% 100%

0% 30% 100%

90% 90% 0%

34
Adjustability:

• More sensitive around neutral. (positive exponential, see example)

• Less sensitive around neutral. (negative exponential, see example)

For ACRO throttle, exponential is applied at the low end to help nitro and gasoline engines have a linear throttle response,

so that each 1/4 stick increases engine RPM 25% of the available range. (In most engines this ranges from 5-60%.)

GOAL of EXAMPLE: STEPS: INPUTS:

35

Set up dual rates and exponential

in ACRO mode.

Open

Close.

D/R,EXP.

Choose channel and switch position.

Set rate (Ex: high rate = 95%)

Set expo (Ex: expo = -15%)

Set expo (Ex: expo = -15%)

Set 2 expo (Ex: expo = -3%)

Go to 2nd

nd

switch position and set rate

(Ex: low rate 70%)

Optional: if usinga3 position switch,

set 3rd rate.

for 1 second. (If ADVANCE, again.)

to D/R,EXP.

to desired channel.

to different position.

to 95%.

to -15%.

to -15%.

to -3%.

to 70%.

GOAL of EXAMPLE: STEPS: INPUTS:

Set up dual rates and exponential in

Note: In HELI mode the switch does

not change the rate being adjusted.

Change switch channel and switch

position with mode button.

HELImode.

Open D/R,EXP.

Choose channel and switch position.

Set rate (Ex: high rate = 95%.)

for 1 second. (If ADVANCE, again.)

to D/R,EXP.

to desired channel and

switch position.

to 95%.
GOAL of EXAMPLE: STEPS: INPUTS:

36

Set up aileron triple rates on SWITCH G

with travel settings of 75% (normal),

25% (slow roll) and 140% (extreme

aerobatics) and exponential settings of

0%, +15%, and -40% respectively.

NOTE: This normal rate has no

exponential so it has a very linear,

normal feel. This slow roll rate has

positive exponential (the opposite of

what most people normally use),

which makes the servos more

responsive around center. This makes

the servos feel the same around center

in the normal and low rates, but still

gives a very slow roll rate at full stick.

The 3D rate (extreme aerobatics) has a

very high distance of travel B nearly

twice that of the normal rate.

Therefore, using a very high negative

exponential setting softens how the

servos respond around center stick.

This makes the servos respond

similarly around center stick for a

more comfortable feel.

Many modelers like to set up all 3

triple rates on a single 3-position

switch, creating a "slow and pretty

mode", a "normal mode", and a "wild

stunts mode" all with the flip of a

single switch. To do so, simply set up

rates for all 3 controls and assign all 3

to the same 3-position switch.

Where next?

Open D/R,EXP function.

Choose the channel to change

(Ex: aileron is already selected)

Optional: change switch assignment.

Confirm switch is in desired position

and set rate. (Ex: up = high rate, 75%).

Move SWITCH to 2nd rate position and

set this particular rate.

(Ex: center = low rate, 25%).

Optional: if using a 3 position

SWITCH, move SWITCH to 3rd position

and set this rate (Ex: down = 3D rate,

140%).

Optional: instead of using a switch,

you can set high rates to be triggered

when the stick moves past a certain

point. To test this, set aileron high

rate to 25%.

Move AILERON STICK

and notice the huge jump in travel

after the stick moves 90% of its

distance.

to the right

Set each rate's EXP.

(Ex: 0%, +15%, -40%)

Close.

for 1 second. (If ADVANCE, again.)

to D/R,EXP.

to desired channel.

to G.

G to up position.

G to center position.

G to down position.

You may also change the trigger point

by holding the stick at the desired point,

then pressing and holding the DIAL.

G to up position.

confirm EXP reads 0.

G to down position.

G to center position.

Set up flight timers: see p. 37.

Set up TRAINER functions: see p. 38.

Adjust the sensitivity of the trims: see p. 39.

Set up twin aileron servos: see p. 43.

Set up programmable mixes to meet your specific needs: see p. 53.

Repeat above steps for elevator and rudder.

to 1.

to 75%

to 25%

to 15%

to -40%

to 25%

to 140%
TIMERsubmenu (stopwatch functions): controls an electronic clock used to keep track of time remaining in a competition time

allowed, flying time on a tank of fuel, amount of time on a battery, etc.

Adjustability:

• Count down timer: starts from the chosen time, displays time remaining. If the time is exceeded, it continues to count

below 0.

• Count up timer: starts at 0 and displays the elapsed time up to 99 minutes 59 seconds.

• Independent to each model, and automatically updates with model change.

• In either TIMERmode, the timer beeps once each minute. During the last twenty seconds, there's a beep each two seconds.

During the last ten seconds, there's a beep each second. A long tone is emitted when the time selected is reached.

• To Reset, choose the desired timer with the SELECT key (while at the startup screen), then press and hold DIAL for 1 second.

• Activation by either direction of

• To quickly reset any timer from the home screen, cursor down until the timer blinks. Press dial to reset.

SWITCH A-H, bySTICK (1-4) . THROTTLE STICK is convenient if you are keeping track of

fuel remaining, or for an electric, how much battery is left.

GOAL of EXAMPLE: STEPS: INPUTS:

37

Set timer to count down 4-1/2

minutes, being controlled by

THROTTLE STICK position. This is

utilized to keep track of actual

Throttle on time to better correlate

with fuel/battery usage.

Where next?

Open BASIC menu, then

open TIMER function.

Adjust time to 4 min. 30 sec., count down.

Activate the function.

Assign to THROTTLE STICK and set

trigger point (if timer is to trigger

BELOW this throttle point, so

arrow points down).

Close.

for 1 second. (If ADVANCE, again.)

to page 3.

to TIMER.

to 4. to 30.

to SW.

to 3(arrow points up).

THROTTLE STICK to desired

position (Ex: 1/4 stick).

for 1 second to set.

Adjust END POINTs after first flight test: see p. 32.

Adjust auxiliary channel assignments: see p. 28.

Set up TRAINER functions: see p. 38.
TRAINER: for training novice pilots with optional trainer cord connecting 2 transmitters. The instructor has several levels

of controllability.

Adjustability:

• "N": When the TRAINER SWITCH is ON, the channel set to this mode can be

controlled by the student. The set channel is controlled according to any

programming set at the student's transmitter.

• "F": When the TRAINER SWITCH is ON, the channel set to this mode can be controlled

by the student, controlled according to any mixing set at the instructor's transmitter.

"-": The channel set to this mode cannot be controlled by the student even when the TRAINER SWITCH is ON. The set

channel is controlled by the instructor only, even when the TRAINER SWITCH is ON.

•

•

SWITCH: controlled by spring-loaded SWITCH F (7CA) or H (7CH) only. Not assignable.

• Compatibility: The 7C may be master or student with any Futaba FM transmitter compatible with the cord. Simply

plug the optional trainer cord (For 7C series, sold separately) into the trainer connection on each transmitter, and

follow the guidelines below.

Examples:

• When throttle/collective are set to "F", 5-channel helicopter practice is possible with a 4-channel transmitter.

• Set up the model in a second transmitter, use "N" mode to quickly and safely check proper operation of all

functions, then allow the student radio to fully fly the model.

• Using "N" mode, set lower throws, different exponentials, even different auxiliary channel settings on the student

radio (if it has these features).

• To ease the learning curve, elevator and aileron may be set to the "N" or "F" mode, with the other channels set to

"-" and controlled by the instructor.

Precautions:

• NEVER turn on the student transmitter power.

• ALWAYS set the student transmitter modulation mode to PPM.

• BE SURE that the student and instructor transmitters have identical trim settings and control motions. Verify by

switching back and forth while moving the control sticks.

• FULLY extend the instructor's antenna. Collapse the student's antenna.

• Always remove the student transmitter's RF module (if it is a module-type transmitter).

• When the TRAINER function is active, the snap roll function is deactivated. Other functions, such as THR-CUT,

which have been assigned to the same switch, are notdeactivated. Always double check your function assignments

prior to utilizing the TRAINER function.

• When you select a different model, the TRAINER function is deactivated in the current model for safety reasons.

GOAL of EXAMPLE: STEPS: INPUTS:

38

Turn on the TRAINER system and set

up so student has: fully functional

control of aileron to support

FLAPERON ;

normal control of rudder to allow

lowered travel; and no throttle

channel control (with the instructor

for safety).

Where next?

Open BASIC menu, then open

TRAINER function.

Activate TRAINER.

Choose desired channel(s) and proper

training type(s).

Close.

for 1 second. (If ADVANCE, again.)

to page 3. to TRAINER.

to OFF.

past AIL and ELE (default OK).

to THR,

to RUD,

to "-": OFF.

TEST student radio function fully prior to attempting to fly!

Set student 7C to PPM(required regardless of receiver's modulation): see p. 28.

Set up dual/triple rates and exponential (D/R,EXP) on student 7C: see p. 34.

Reset trims on student 7C: see p. 39.

to "N": NORM.
TRIM submenu: resets and adjusts effectiveness of digital trims.

The 7CA has digital trims which are different from conventional mechanical trim sliders.

Each TRIM LEVER is actually a two-direction switch. Each time the TRIM LEVER is

pressed, the trim is changed a selected amount. When you hold the TRIM LEVER, the trim

speed increases. The current trim position is graphically displayed on the start up screen.

The TRIM submenu includes two functions that are used to manage the trim options.

HELImodels only: OFFSET is available in the idle ups. If OFFSET is inhibited, adjustment of the TRIM LEVERS will adjust the

trims for all flight conditions. If OFFSET is active, then moving the trims within any one condition will affect only that

condition. See OFFSET, p. 70.

Trim reset (CLR): electronically centers the trims to their default values. Note that the SUB-TRIM settings and the trim

STEP rate are not reset by this command.

GOAL of EXAMPLE: STEPS: INPUTS:

Trim step: changes the rate at which the trim moves when the TRIM LEVER is activated. It may be set from 1 to 40

units, depending on the characteristics of the aircraft. Most ordinary aircraft do well at about 2 to 10 units. Generally larger

trim steps are for models with large control throws or for first flights to ensure sufficient trim to properly correct the model.

Smaller trim steps are later used to allow very fine adjustments in flight.

GOAL of EXAMPLE: STEPS: INPUTS:

39

Reset trims to neutral after having

adjusted all linkages.

NOTE: This is one of several

functions for which the radio requires

confirmation to make a change.

Where next?

Open BASIC menu, then open

TRIM submenu.

Request and confirm the reset.

Close.

for 1 second. (If ADVANCE, again.)

to TRIM.

for 1 second.

Beep sounds.

Adjust SUB-TRIMs: see p. 40.

Adjust trim rate (STEP): see below.

Adjust END POINTs: see p. 32.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.

Double the sensitivity (larger step) of

the AILERON TRIM LEVERS for a first

flight of an aerobatic model to ensure

sufficient range to trim the model for

level flight.

Where next?

Open

Choose the STEP you wish to change.

(Ex: aileron)

TRIM submenu.

Adjust the size of the step. (Ex: incr. to 8)

Repeat as desired for other channels.

Close.

for 1 second. (If ADVANCE, again.)

to TRIM.

to 8.

to CH1.

to ELEV. to new setting.

Repeat as needed.

Adjust sub trims: see p. 40.

Adjust END POINTs: see p. 32.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.

.
SUB-TRIM: makes small changes or corrections to the neutral position of each servo. Range is -120 to +120, with 0 setting,

the default, being no SUB-TRIM.

The recommended procedure is as follows:

• measure and record the desired surface position;

• zero out both the trims (TRIM RESETmenu) and the SUB-TRIMs (this menu);

• mount servo arms and linkages so that the control surface's neutral is as correct as possible; and

• use a small amount of SUB-TRIM to make fine corrections.

GOAL of EXAMPLE: STEPS: INPUTS:

We recommend that you center the digital trims before making SUB-TRIM

changes, and that you try to keep all of the SUB-TRIM values as small as

possible. Otherwise, when the SUB-TRIMs are large values, the servo's

range of travel is restricted on one side.

40

Adjust the flap servo's SUB-TRIM until

its center exactly matches the aileron

servo's center, as they are to work

together as flaperons.

Where next?

Open BASIC menu, then open

SUB-TRIM.

Choose the channel to adjust, and

adjust until surfaces match. (Ex: flap)

Repeat for other channels.

Close.

for 1 second. (If ADVANCE, again.)

to SUB-TRIM.

as needed. to each channel,

as needed.

Adjust trim steps: see p. 39.

Adjust END POINTs: see p. 32.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.
FailSafe (loss of clean signal and low receiver battery) submenu (PCM mode only) (F/S ): sets responses in case of loss

of signal or low Rx battery.

FailSafe (F/S ): instructs a PCM receiver what to do in the event radio interference is received.

Adjustability:

• Each channel may be set independently.

• The NOR (normal) setting holds the servo in its last commanded position.

• The F/S (FailSafe) function moves each servo to a predetermined position.

• NOTE: the setting of the throttle's F/S also applies to the Battery F/S (see below).

Examples:

• The F/S setting is used in certain competitions to spin the aircraft to the ground prior to flying away and doing potential damage

elsewhere. Conversely, may also be used to go to neutral on all servos, hopefully keeping the plane flying as long as possible.

• Competition modelers often maintain the NOR function so that brief interference will not affect their model's maneuver.

• Set the throttle channel so that the engine idles when there is interference (ACRO). This may give enough time to fly away

from and recover from the radio interference and minimize damage if crashed.

• For helicopters, NOR is typically the safest choice.

• We also recommend setting a gasoline engine's electronic kill switch to the OFFposition in the F/S function for safety reasons.

Updating F/S Settings: If you specify a F/S setting, the FailSafe data is automatically transmitted once each two minutes.

When you choose the F/S mode, check that your settings are as desired by turning off the transmitter power switch and

verifying that the servos move to the settings that you chose. Be sure to wait at least two minutes after changing the setting

and turning on the receiver power before turning off the transmitter to confirm your changes have been transmitted.

GOAL of EXAMPLE: STEPS: INPUTS:

Battery FailSafe (F/S ): a second battery low warning feature (separate from the transmitter low voltage warning). When

the airborne battery voltage drops below approximately 3.8V, the PCM receiverís battery F/S function moves the throttle

to a predetermined position. When the Battery F/S function is activated, your engine will move to idle (if you haven't set

a position) or a preset position. You should immediately land. You may temporarily reset the Battery F/S function by

moving the THROTTLE STICK to idle. You will have about 30 seconds of throttle control before the battery function

reactivates.

Adjustability:

• NOR F/S setting for throttle results in Battery F/S going to the servo position reached by moving THROTTLE STICK to the

bottom with TRIM LEVER centered;

• POS F/S setting for throttle results in Battery F/S also going to the same throttle servo position as the regular F/S .

If using a 6V (5-cell) receiver battery, it is very likely that your battery will be rapidly running out of charge before

battery FailSafe takes over. It is not a good idea to count on battery Fail Safe to protect your model at any time, but

especially when using a 5-cell battery.

41

Change the receiver FailSafe command

for channel 7 (gasoline engine kill

switch) to a preset position.

NOTE: This is one of several functions

for which the radio requires

confirmation to make a change.

Where next?

Open the BASIC menu, then open

F/S function.

Choose Channel to change. (ex: Ch. 8)

Set and confirm fail safe command.

Repeat as desired.

Close.

for 1 second. (If ADVANCE, again.)

to F/S .

to Ch 7.

that controls channel 7 to desired

OFFposition.

for 1 second to store.

to F/S .

Wait two minutes and confirm F/S settings as described above.

Read below for information on Battery FailSafe.

Adjust END POINTs to gain proper F/S responses if needed: see p. 32.

Adjust SUB-TRIM to gain proper F/S responses if needed: see p. 40.
ACRO ADVANCE MENU FUNCTIONS:

Aircraft wing types (ACRO):

There are 3 basic wing types in aircraft models:

Simple. Model uses one aileron servo (or multiple servos on a Y-harness into a single receiver channel) and has a tail.

This is the default setup and requires no specialized wing programming.

Twin Aileron Servos. Model uses 2 aileron servos and has a tail. see Twin Aileron Servos.

Tail-less model (flying wing). Model uses 2 wing servos working together to create both roll and pitch control.

see ELEVON.

Twin Aileron Servos (with a tail) (ACRO): Many current generation models use two aileron servos, plugged into two

separate receiver channels. (If your model is a flying wing without separate elevators, see ELEVON, p. 45.)

Benefits:

Ability to adjust each servo's center and end points for perfectly matched travel.

Redundancy, for example in case of a servo failure or mid-air collision.

Ease of assembly and more torque per surface by not requiring torque rods for a single servo to drive 2 surfaces.

Having more up aileron travel than down travel for straighter rolls ñ aileron differential. (see glossary for definition.)

Using the two ailerons not only as ailerons but also as flaps, in which case they are called flaperons.

Options:

5-channel receiver? Set up AIL-2 (see p. 43) in FLAPERON.

FLAPERON:

Uses CH6 for the second servo (see AIL-2 to use CH5 orCH7.)

Allows flap action as well as aileron action from the ailerons.

Provides FLAP-TRIM function to adjust the neutral point of the flaperons for level flight.

Also allows aileron di

Channel 6 = normal flaperons, 2 servos operate together as flaps;

Channel 5 or 7 = act like aileron differential did in prior radios; channel 6 is still FLAPS, and the 2 ailerons

never act together as flaps EXCEPT in the airbrake function.

fferential in its own programming.

NOTE: Only one of the two wing-type functions (FLAPERON, and ELEVON) can be used at a time. Both functions

cannot be activated simultaneously. To activate a different wing type, the first must be deactivated.

GOAL of EXAMPLE: STEPS: INPUTS:

42

De-activate FLAPERON so that

ELEVON can be activated.

Where next?

Open the FLAPERON function.

De-activate the function.

Close function.

for 1 second.(If basic, again.)

to FLAPERON.

to INH.

Set up ELEVON(see p. 45).
Using FLAPERON (ACRO):

The FLAPERON mixing function uses one servo on each of the two ailerons, and uses them

for both aileron and flap function. For flap effect, the ailerons raise/lower simultaneously.

Of course, aileron function (moving in opposite directions) is also performed.

Once FLAPERON is activated, any time you program CH6 or "Flap" (ie. FLAP-ELEVATOR mixing), the radio commands both

servos to operate as flaps. A trimming feature is also available (see FLAP-TRIM) to adjust both neutral positions together

for straight-and-level flight or slight increases/decreases of the flap angle.

END POINT and SUB-TRIM both still adjust each servo individually.

GOAL of EXAMPLE: STEPS: INPUTS:

*If the FLAPERON function does not activate there is a conflicting mix act such as ELEVON.

43

Activate twin aileron servos, FLAPERON.

Input 10% more up travel than down

travel (aileron differential) within the

FLAPERONprogramming.

Where next?

Open the FLAPERON function.

Activate the function.

Optional: adjust the aileron

differential.(Ex: +10%)

Optional: If usinga5channel

receiver, change AIL-2 from CH6

to CH5.

Close menu.

for 1 second. (If basic, again.)

to FLAPERON. *

to +10%.

to CH5.

Set FLAP-TRIM: see p. 44.

Set up AIRBRAKE mix: see p. 52.

View additional model setups on the internet: www.futaba-rc.com/faq/faq-7c.html

Second aileron servo (AIL-2): The default for the second aileron servo is CH6 and this allows both servos to work

as ailerons and flaps. If CH5 or CH7 is selected the flap function only works CH6, and the two aileron servos

function only as ailerons except in the air brake (A. BRAKE) function. In the air brake function the flap servo CH6

and the aileron servos CH1 and (CH5 or CH7) work together.
FLAP-TRIM allows the flap action to be set in a way that it can be adjusted with the VR

dial. AIRBRAKE will also move the flaps to a specified position via movement of a switch.

The flaps can also be moved with switch using a programmable mix. See offset as master

p.53.

44

Add FLAP-TRIM to allow the model's

ailerons to drop 30% together as flaps

from the VR dial.

The FRAPERON function must be

active with the second servo set to CH6.

*If the FLAP-TRIM is inhibited the flap control defaults to the VR dial. You can use E.POINT to set the travel of the flap if you are using one flap servo.

If you are using flaperons with CH1 and CH6 DO NOT inhibit FLAP-TRIM.

Open FLAP-TRIM.

Set the dial to desired zero flap side.

Set the dial to desired full flap side.

Set flap throw (Ex 30%).

Set the OFS so that the flap will work

for the full range of the dial.

Close menu.

for 1 second.(If basic, again.)

to

to 30%.

full left.

full right.

FLAP-TRIM.

The function is automatically activated with the FRAPERON.
There are 3 basic tail types in aircraft models:

Simple. Model uses one elevator servo and one rudder servo (or multiple servos on a Y-harness). This is the default.

Tail-less model. Model uses 2 wing servos together to create roll and pitch control. see ELEVON. see p. 45.

V-TAIL. Model uses 2 surfaces, at an angle, together to create yaw and pitch control. see V-TAIL. see p. 46.

Note: Only one of the two tail-type functions ( V-TAIL, and ELEVON) can be used at a time.

(See the wing type example on page 42.)

Using ELEVON(ACRO): used with delta wings, flying wings, and other tailless aircraft that combine aileron and

elevator functions, using two servos, one on each elevon. The aileron/elevator travel can be adjusted independently.

This is also popular for ground model use, such as tanks, which drive two motors together for forward, and one motor

forward/one backward for turning. Also aileron differential can be adjusted in this programming.

Adjustability:

• Requires use of CH1 and CH2.

• Independently adjustable aileron/elevator travel.

• Adjustable aileron differential.

NOTE: If ELEVON is active, you cannot activate FLAPERON. You must deactivate the last function to activate ELEVON.

NOTE: Be sure to move the elevator and aileron sticks to full deflection during setup. If large travels are specified, when

the AILERON and ELEVATOR STICKS are moved at the same time the controls may bind or run out of travel.

(For details on setting up a complex aerobatic plane, such as "space shuttle" style controls, please visit

www.futaba-rc.com\faq\faq-7c.html. Many other setup examples are also available at this location.)

GOAL of EXAMPLE: STEPS: INPUTS:

45

Activate ELEVON.

Adjust aileron differential to +10%.

Where next?

Open the ELEVON function.

Activate the function.

Optional: adjust the aileron

differential.

(Ex: +10%. )

Optional: adjust the aileron/elevator

travel as desired.

Close menu.

for 1 second.(If basic, again.)

to ELEVON.

to +10%.

Adjust individual servo's SUB-TRIMs: see p. 40 and END POINTs: see p. 32.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.

View additional model setups on the internet: www.futaba-rc.com\faq\faq-7c.html

(Elevator travel)

(Aileron travel)
Using V-TAIL(ACRO):

V-TAIL mixing is used with v-tail aircraft so that both elevator and rudder functions

are combined for the two tail surfaces. The elevator and rudder travel can be

adjusted independently.

NOTE: If V-TAIL is active, you cannot activate ELEVONfunctions. If one of these functions is active, an error message will be

displayed and you must deactivate the last function prior to activating ELEVON. See the wing example on page 42.

NOTE: Be sure to move the elevator and rudder sticks regularly while checking the servo motions. If a large value of travel

is specified, when the sticks are moved at the same time, the controls may bind or run out of travel. Decrease the travel

until no binding occurs.

Adjustability:

Independently adjustable elevator/rudder travels.

CH (2/1 CH): This allows you to utilize V-TAIL function with v-tail aircraft so that elevator and aileron are combined.

Ex: A v-tail polyhedral wing with no ailerons would use this option. The v-tail will have both pitch and roll on the right

stick.

(For details on setting up a complex plane, such as one with a v-tail AND a separate steerable nosewheel, please visit our

FAQ at www.futaba-rc.com\faq\faq-7c.html. Many other setup examples are also available at this location.)

GOAL of EXAMPLE: STEPS: INPUTS:

46

Activate V-TAIL.

Adjust the elevator/rudder travels

as desired.

Where next?

Open the V-TAIL function.

Activate the function.

optional: adjust the travels separately

as desired.

optional: change the channel from

4 to 1. (If needed.)

Close menu.

for 1 second.(If basic, again.)

to V-TAIL.

(Elevator travel)

(Rudder travel)

to 2/1CH.

Adjust END POINTs: see p. 32 and SUB-TRIMs: see p. 40.

Set up dual/triple rates and exponential (D/R,EXP): see p. 34.

Set up ELEV-FLAP mix: see p. 49.

View additional model setups on the internet: www.futaba-rc.com\faq\faq-7c.html.
Snap Rolls at the flick of a switch (SNAP-ROLL) (ACRO):

This function allows you to execute snap rolls by flipping a switch, providing the

same input every time. It also removes the need to change dual rates on the 3

channels prior to performing a snap, as SNAP-ROLL always takes the servos to the

same position, regardless of dual rates, inputs held during the snap, etc.

Note: Every aircraft snaps differently due to its C.G., control throws, moments, etc.

Some models snap without aileron; others snap on elevator alone. Most models snap

most precisely with a combination of all 3 surfaces. Additionally, rate of speed and

acceleration when using the snap switch will affect how the model snaps. For

information on using gyros with airplanes for cleaner precision maneuvers, such as

snaps and spins without over rotation, see p. 56.

Adjustability:

Travel: Adjust the amount and direction of elevator , aileron and rudder travel.

Range: -120 to +120 on all 3 channels. Default is 100%of range of all 3 channels.

Directions: (up/right, down/right, up/left, down/left).

This snap-roll function is fully adjustable regarding travels and direction on each of the 3 channels.

AIL ELE RUD

Right positive(up) + + +

Right negative(down) + - -

Left positive(up) - + -

Left negative(down) - - +

Note:Always deactivate the TRAINER function prior to activate SNAP-ROLL function.

47

GOAL of EXAMPLE: STEPS: INPUTS:

Activate SNAP-ROLL. Adjust elevator

travel to 55%, rudder travel to 120% in

the right/up snap.

Where next?

Open the SNAP-ROLL function.

Activate the function.

Adjust the travels as needed. (Ex:

elevator to +55%, rudder to +120%.)

Close menu.

for 1 second.(If basic, again.)

to SNAP-ROLL.

to OFFor ON.

to +55%.

to +120%.

Set up programmable mixes: see p. 53.

View additional setups on the internet: www.futaba-rc.com\faq\faq-7c.html.
MIXES: the backbone of nearly every function

Mixes are special programs within the radio that command one or more channels to act together with input from only one

source, such as a stick, switch or knob.

There are a variety of types of mixes.

Types:

• Linear: Most mixes are linear. A 100% linear mix tells the slave servo to do exactly what the master servo is doing,

using 100% of the slave channel's range to do so. An example is FLAPERON. When aileron stick is moved, the flap

servo is told to move exactly the same amount. A 50% linear mix would tell the slave servo, for example, to move to

50% of its range when the master's control is moved 100%.

• Offset: An OFFSET mix is a special type of linear mix. When the mix is turned on (usually a flip of a switch), the slave

servo is moved a set percent of its range. An example of this is AIRBRAKE --- moving flaps, flaperons, and elevator all

to a set position at the flip of a switch. (see p. 52.)

Essentially every feature in the radio's programming is really a mix, with all assignments/programming set up and ready

to use. Additionally, the7C ACRO and HELI programs provide 3 linear fully-programmable mixes that allow you to

set up special mixes to resolve flight difficulties, activate additional functions, etc.

Let's look quickly at a few examples that are features we've already covered. This may help to clarify the mix types and

the importance of mixes.

Additional examples:

• Exponential is a preprogrammed curve mix that makes the servosí response more (+) or less (-) sensitive around center

stick (works in conjunction with dual rate, a linear mix that adjusts the total range). see D/R,EXP, p. 34.

• THR-CUT is anOFFSET pre-programmed mix. This tells the throttle servo, when below a certain point, to move toward

idle an additional set percentage to help close the carburetor. See p. 33.

• ELEV-TO-FLAP mixing is a pre-programmed linear mix to move the flaps proportionally to elevator control, helping the

model loop even tighter than it can on elevator alone. (see p. 49.)

Next, we'll get an in-depth look at some pre-programmed mixes (mixes whose channels are predefined by Futaba for

simplicity) we've not covered yet, and last, look at the fully-programmable mix types.

48
ELEV-FLAP mixing (ACRO):

ELEV-FLAP mixing is the first pre-programmed mix we'll cover. This mix makes the

flaps drop or rise whenever the ELEVATOR STICK is moved. It is most commonly used

to make tighter pylon turns or squarer corners in maneuvers. In most cases, the flaps

droop (are lowered) when up elevator is commanded.

Adjustability:

Rate: -100% (full up flap) to +100 (full down flap), with a default of +50% (one-half of the flap range is achieved

when the ELEVATOR STICK is pulled to provide full up elevator.)

Switch: assignable, or null, so mix is always active.

GOAL of EXAMPLE: STEPS: INPUTS:

49

Activate ELEV-FLAP mixing. Adjust

flap travel to 45% flaps.

Set switch assignment to null so the

mix is always active.

Where next?

Open the ELEV-FLAP function.

Activate the function.

Adjust the travels as needed.

(Ex: +45%)

Optional: change SWITCH control. Ex:

change to NULL so flaps only respond

to ELEVATOR STICK input.

Close menu.

for 1 second.(If basic, again.)

to ELEV-FLAP.

to 45%.

to NULL. (--)

Adjust flaperons' flap travel available ( FLAPERON): see p. 43.

Set up AIRBRAKE: see p. 52.

Set up programmable mixes (ex: FLAP-ELEVATOR): see p. 50.

View additional setups on the internet: www.futaba-rc.com\faq\faq-7c.html.
FLAP-ELEVmixing (ACRO ):

FLAP-ELEV mixing is a pre-programmed linear mix. This mix makes the elevator

move whenever the flaps are moved. This mix is used to compensate for any

pitching created by the flap.

Adjustability:

Rate: -100% (full up elevator) to +100 (full down elevator), with a default of +50% (one-half of the elevator range is

achieved when the flaps are lowered to full range.)

Offset: offsets the elevator's center relative to the flaps.

GOAL of EXAMPLE: STEPS: INPUTS:

Activate FLAP-ELEV mixing. Adjust

elevator travel to 45%.

Where next?

Open the FLAP-ELEV function.

Activate the function.

Adjust the travels as needed.

(Ex: +45%)

Close menu.

for 1 second.(If basic, again.)

to FLAP-ELEV.

to 45%.

to ON.

View additional setups on the internet: www.futaba-rc.com\faq\faq-7c.html.

50
AILE-RUDD mixing (ACRO):

AILE-RUDD mixing is a pre-programmed linear mix. This mix is used to mix

rudder operation with aileron operation automatically, to make realistic

coordinated turns. It is especially effective when turning and banking scale

models or large models that resemble full-sized aircraft.

Adjustability:

Rate: -100% to +100, with a default of +50% (one-half of the rudder range is achieved when the AILERON STICK is

pulled to provide full left or right aileron.)

GOAL of EXAMPLE: STEPS: INPUTS:

51

Activate AILE-RUDD mixing. Adjust

rudder travel to 45%.

Where next?

Open the AILE-RUDD function.

Activate the function.

Adjust the travels as needed.

(Ex: +45%)

Close menu.

for 1 second.(If basic, again.)

to AILE-RUDD.

to 45%.

View additional setups on the internet: www.futaba-rc.com\faq\faq-7c.html.
AIRBRAKE mixing(ACRO):

Like FLAPERON, AIRBRAKE is one function that is really made up of a series of pre-programmed mixes all done for you

within the radio. AIRBRAKE simultaneously moves the flap and elevator, and is usually used to make steep descents or

to limit increases in airspeed in dives.

This function is often used even on models without flaps as an easy way to use the flaperons.

Adjustability:

Activation: set positions by flipping SWITCH G.

Provides AIRBRAKE response immediately upon switch movement, going to a pre-set travel on each active channel

without any means of in-flight adjustment.

Channels controlled: Elevator and flap may be set independently in AIRBRAKE , including set to 0 to have no effect.

Note: If using FRAPERON with channel 5 or 7 the AIRBRAKE has separate settings for the aileron servos working

as flaperons and the flap.

52

GOAL of EXAMPLE: STEPS: INPUTS:

Activate AIRBRAKE on a FLAPERON

model. Adjust the flap travel to 50%,

with negative elevator (push) of 10%.

Where next?

Confirm FLAPERON is active.

Open the AIRBRAKEfunction.

Activate the function.

Adjust the travels as needed. (Ex:

Flap 50%, Elevator -10%.)

Close menu.

see FLAPERON instructions.

for 1 second.(If basic, again.)

to AIRBRAKE.

Switch G in up position.

to OFF.

to -10%.

to 50%.

Adjust flaperons' total flap travel available ( FLAPERON): see p. 43.

Set up ELEV-FLAP mixing: see p. 49.

View additional model setups on the internet: www.futaba-rc.com\faq\faq-7c.html.
PROGRAMMABLE MIXES (PROG.MIX1-3):

Your 7C contains three separate linear programmable mixes.

There are a variety of reasons you might want to use these mixes. A few are listed here.

Sample reasons to use linear programmable mixes:

To correct bad tendencies of the aircraft (such as rolling in response to rudder input).

To automatically correct for a particular action (such as lowering elevator when flaps are lowered).

To operate a second channel in response to movement in a first channel (such as increasing the amount of smoke oil

in response to more throttle application, but only when the smoke switch is active).

To turn off response of a primary control in certain circumstances (such as simulating one engine flaming-out on a

twin, or throttle-assisted rudder turns, also with a twin).

Adjustability:

Defaults : The 3 programmable mixes default to aileron to rudder mixes.

• PROG.MIX1-3 aileron-to-rudder for coordinated turns

Channels available to mix: All three mixes may use any combination of CH1-7.

Offset may also be set to the master channels. (see below.)

Master: the controlling channel. The channel whose movement is followed by the slave channel.

Another channel: Most mixes follow a control channel. (Ex: rudder-to-ailerons, 25%, no switch, corrects roll coupling.)

MASTER SLAVE SWITCH & POSITION RATE OFFSET

RUDD AILE NULL (--) 25% center(default)

MASTER SLAVE SWITCH & POSITION RATE

OFST CH6 A DOWN 20%

Offset as master: To create an OFFSETmix, set the master as OFST. (Ex: move flap 20% of their total

throw when SWITCH A is in down position.)

53

•

•

•

•

•

•

•

•

•
• Slave: the controlled channel. The channel that is moved automatically in response to the movement of the master

channel. The second channel in a mixís name (i.e. aileron-to-rudder).

• On/off choices:

• SWITCH: Any of the positions of any of the 5 switches may be used to activate a mix. Up&Cntr, Cntr&Dn options

allow the mix to be ONin 2 of the 3 positions of a 3-position SWITCH.

• NULL (--): No SWITCH can turn this mix OFF. This mix is active at all times.

• Rate: the percentage of the slave's range it will move upon maximum input from the master channel. Ex: RUDDERAILERON mix, 50%. Ail range=1". When rudder is moved full right, ailerons move 1/2".

• Offset: Offsets the slave's center relative to the master. Ex: Smoke valve opens wider per throttle servo position when

smoke SWITCH is ON. Smoke servo's neutral is moved down from THROTTLE STICK center to the bottom.

54

MASTER SLAVE SWITCH & POSITION RATE OFFSET

RUDD AILE NULL (--) 50% center(default)

MASTER SLAVE SWITCH & POSITION RATE OFFSET

THRO CH7 E DOWN 0%(Hi) half throttle(default)

100%(Lo)

*Assign the CH7 switch to NULL(--). See p.28.
GOAL of EXAMPLE: STEPS: INPUTS:

Other Examples:

RUD-THR(HELI) mix: When right rudder is applied, additional torque is needed from the motor to drive the tail left. Left

rudder requires less torque. A rudder-throttle mix, positive on the left side and negative on the right, adjusts for this.

RUD-ELEV(ACRO) mix: Compensate for pitching up or down when rudder is applied.

ELEV-PIT(HELI) mix: compensate for the loss of lift of tilting the model.

55

Set up a Smoke system:

ON when SWITCH E is in the

down position.

*Adjust the CH7 switch to NULL

prior to this setting. See page. 28.

Where next?

Open an unused programmable mix.

(Ex: use PROG.MIX3.)

Activate the function.

Choose master and slave channels.

Assign SWITCH and position.

(Ex: E DOWN.)

Set rates. (Ex: Lo=100%, Hi=0%.)

Set OFFSET, if needed.

Close menu.

for 1 second.(If basic, again.)

to PROG.MIX3.

to E DOWN.

to CH3.

THROTTLE STICK past center.

THROTTLE STICK past center.

Stick to desired point.

for 1 second to set.

View numerous additional mix setups: www.futaba-rc.com\faq\faq-7c.html.

to CH7.

to +100%.

to 0%.
Special Additions, Functions, And Added Equipment Commonly Used On Powered Aircraft

Gyros: Just as torque rotates an aircraft on the runway during take-off, helicopters struggle with torque twisting the model

every time throttle is applied. For many years gyroscopes have been used on model helicopters to control this. In

competition aerobatics and scale aircraft competition alike, the usefulness of gyros has recently come to light. For in-depth

information on gyro types, please see p. 72.

For aerobatics, gyros on rudder and elevator fix over-rotation of snaps and spins as well as tail wagging in stall turns. (Futaba

offers a twin-axis gyro, GYA-352, that controls two axes with a single gyro.) For 3D aerobatics (below stall speed, such as torque

rolls), heading-hold/AVCS gyros on rudder and elevator dramatically simplify these maneuvers. For scale models, gyros are

frequently used to simplify take-offs and landings by keeping the model straight during throttle application.

Always be careful if using a heading-hold/AVCS gyro, as it will correct any change in yaw that is not caused by

movement of the rudder (like making a turn with just aileron and elevator). Typically, modelers use headinghold/AVCS settings only for specific maneuvers, such as take-offs and torque rolls, then switch to normal mode or

OFF for the remainder of the flight to avoid this risk.

While the 7C's ACRO programming does not offer gyro-specific programming, simply adjusting the END POINTs of

the channel that is used to control the gyro's gain will adjust the gyro's performance in flight. For details on gain and other

gyro functions, please see the HELI GYROprogramming, p. 72.

Retracts: Retractable landing gear is often used on scale models for increased realism and on high performance models to

decrease drag. The gear servo is typically plugged into CH5, which defaults to a 2-position switch for simplicity.

Mechanical retracts require the use of a specialized non-proportional retract servo. Retract servos go from full

travel one direction to full travel the other direction, then mechanically hold the gear into the locked position. A

regular servo used for mechanical retracts will continue to draw full power the entire time, prematurely draining

the battery and risking crash of your model. End point will not adjust a retract servo.

Pneumatic (air driven) retracts use a standard servo to control an air valve which directs air into or out of the retract units,

moving the gear up or down. Pneumatics are easier to install but require added maintenance of the air system.

Gear Doors: Some scale models with retracts also have separate gear doors to cover the scale gear. For one example of

how to operate the gear doors separately from the retracts, please visit our website: www.futaba-rc.com\faq\faq-7c.html.

Smoke Systems: Many scale and aerobatic models use smoke systems to provide increased realism or a more impressive

demonstration. There are many smoke systems available, with varying types of control. Most use a servo to increase/decrease the

flow of smoke fluid into the specialized smoke muffler. The oil is heated in the muffler, creating smoke.

It is a good practice to set up a "safety" that shuts off the smoke oil if the throttle is lowered below half-stick. For a detailed

example of a smoke system setup, please visit our website: www.futaba-rc.com\faq\faq-7c.html.

Kill Switches: For safety reasons, it is strongly recommended that an electronic kill switch be installed in all gasolinepowered aircraft. In case of any type of in-flight problem (such as prop failure, exhaust vibrating off, throttle servo failure,

radio interference), the modeler can shut the engine off quickly and safely in flight. Additionally, FailSafe (F/S ) settings

are recommended to shut the engine off in case of sufficient interference to trigger the PCM FailSafe settings.

Lastly, an electronic kill switch set to "off" prior to the aircraft's power being shut off adds an additional safety should

someone accidentally turn on the mechanical kill switch on the exterior of the model.

Bomb Drops, Paratroopers, and other Released Items: Many sport and scale models include one or more of these fun

add-ons. Typically, all are controlled by a simple micro-switch plugged into CH7. The switch is assigned in PARAMETER.

56
HELICOPTER MODEL FUNCTIONS

Please note that nearly all of the BASIC menu functions are the same for airplane (ACROsetup)

and helicopter (H-1/H-2/HR3/HN3/H-3/HE3) setups. The features that are identical refer back to the ACRO chapter.

The Helicopter BASIC menu includes the normal conditionís throttle and collective pitch curves and revo. mixing.

(idle-ups and throttle hold are advanced features and are in the ADVANCE menu).

Helicopter Setup Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 58.

HELI (H-1/H-2/HR3/HN3/H-3/HE3) BASIC MENU

MODEL SUBMENU:

MODEL SELECT ........................................................... .See ACRO, p. 25.

MODEL COPY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See ACRO, p. 26.

MODEL NAME ............................................................ .See ACRO, p. 27.

PARAMETER SUBMENU:

MODEL RESET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See ACRO, p. 28.

MODEL TYPE: Information specific to HELI models, including CCPM. . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 61.

MODUL(Modulation, PPM or PCM)............................................. .See ACRO, p. 30.

CH5, CH7 (Auxiliary Channel assignment)........................................ .See ACRO, p. 31.

REVERSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See ACRO, p. 31.

SWASH AFR(swashplate control direction and travel correction) (not in H-1) ... . . . . . . . . . . . . . . . . . . . . . .p. 63.

END POINT.................................................................... .See ACRO, p. 32.

Setting Up the NORMAL Condition: (TH-CV/NOR, PI-CV/NOR, REVO./NOR) . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 65.

THR-CUT(specialized settings for helicopter specific models) ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 66.

D/R,EXP (Specialized settings for helicopter specific models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See ACRO, p. 34.

TIMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See ACRO, p. 37.

TRAINER ...................................................................... .See ACRO, p. 38.

TRIM SUBMENU:

RESET ................................................................... .See ACRO, p. 39.

STEP .................................................................... .See ACRO, p. 39.

SUB-TRIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See ACRO, p. 40.

F/S FAILSAFE (loss of clean signal and low receiver battery) SUBMENU (PCM mode only):

F/S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See ACRO, p. 41.

Battery Fail Safe (F/S) ...................................................... .See ACRO, p. 41.

HELI (H-1/H-2/HR3/HN3/H-3/HE3) ADVANCE MENU

THROTTLE HOLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 67.

THR-CURVE,PIT-CURVE, and REVO. MIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 68.

IDLE-UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 69.

TRIMS/OFFSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 70.

HOVERING SETUPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 71.

GYROS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p. 72.

Mixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See ACRO, p. 48.

PROG.MIX1-3(Linear Programmable mixes, default to AIL-RUD) . . . . . . . . . . . . . . . . .See ACRO, p. 53.

57

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GETTING STARTED WITH A BASIC HELICOPTER

This guideline is intended to help you set up a basic ( H-1 ) heli, to get acquainted with the radio, to give you a jump start

on using your new radio, and to give you some ideas and direction on how to do even more with this powerful system than

you may have already considered. It follows our basic format of all programming pages: a big picture overview of what

we're trying to accomplish; a "by name" description of the steps to help acquaint you with the radio; and then a step-bystep instruction to leave out the mystery and challenge of setting up your model.

Briefly, the typical helicopter's controls are as follows:

Aileron: changes cyclic lateral (roll) . Rolls the helicopter. Tilts the swashplate to the left or right. CH1.

Elevator: changes cyclic pitch. Changes the helicopter's angle of attack (nose up or nose down). Tilts the entire

swashplate fore and aft. CH2.

Rudder: changes the angle of the tail rotor. Yaws the helicopter left or right. CH4.

Collective Pitch: adjusts main rotor collective [angle of the paddles], changing the main blades' pitch. Increased collective

pitch (with throttle) causes the helicopter to rise. Moves in conjunction with throttle on the THROTTLE STICK. CH6.

Throttle: opens/closes carburetor. Moves in conjunction with collective pitch on the THROTTLE STICK. CH3.

REVO: mix that adds rudder in conjunction with pitch. This helps compensate for rotation of the helicopter caused by

the increased engine torque. (Never use revo. mixing with a heading-hold/AVCS gyro which is in headinghold/AVCS mode. However, revo. mixing is still used when a heading-hold/AVCS gyro is in normal mode.)

For additional details, see that function's section in this manual. The page numbers are indicated in the first column for you.

GOAL of EXAMPLE: STEPS: INPUTS:

58

Prepare your helicopter.

Select the proper MODEL TYPE for your

model. Ex: HELI ( H-1) . See p. 61.

[NOTE: This is one of several

functions for which the radio requires

confirmation to make a change. Only

critical changes require additional

keystrokes to accept the change.]

(If the correct model type was already

displayed, be sure to do a model reset

to discard any unwanted settings.)

Then, NAMEthe model. P. 25.

(You do not need to do anything to

"save" or stor e this data.)

In the BASIC menu, open the

PARAMETER submenu.

Go to MODEL TYPE.

Select proper MODEL TYPE.

Ex: H-1.

Confirm the change. Close PARAMETER.

In the BASIC menu, open the MODEL

submenu.

Go to MODEL NAME.

Input aircraft's name.

Close the MODEL submenu when done.

Turn on the transmitter.

for 1 second.(If ADVANCE, again.)

to highlight PARAMETER.

to choose PARAMETER.

to TYPE.

to H-1. for 1 second.

sure? displays. to confirm.

to return to BASIC menu.

as needed to highlight MODEL.

to choose MODEL.

(First character of model's

name is highlighted.)

to change first character.

When proper character is displayed,

to move to next character. Repeat.

to return to BASIC menu.

Install all servos, switches, receiver per your model's instructions. Set all trims

and dials to neutral.

Confirm all control linkages are 90 degrees (or per instructions) from the servo

horn to the ball link for proper geometry and that no slop is present.

Mechanically adjust all linkages to get as close as possible to proper control

throws and minimize binding prior to radio set up.

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59

Reverse servos as needed for proper

control operation. Ex: LEFT RUDDER

STICK results in leading edge of tail

rotor blades moving left. Reverse to

operate properly. P. 31.

Adjust Travels as needed to match

model's recommended throws (usually

listed as high rates).

P. 32.

Activate THR-CUT. P. 66.

Set up throttle curve for normal.2

(Usually changes will not need to be

made prior to first flight.) P. 65.

Set up collective pitch curve for

normal as base of -4, center of +5,

end of +8 to +10 degrees of blade

pitch for aerobatics.2 (If just learning

to fly, ask your instructor.) P. 65.

Set up revo. mixing for normal. (For

heading-hold gyros, inhibit revo.) P. 65.

Confirm Gyro direction. (Note: if

using a heading-hold/AVCS gyro, use

the GYRO programming for proper

setup. See p. 72.)

In the BASIC menu, open REVERSE.

Choose desired servo and reverse its

direction of travel.

(Ex: reverse rudder servo.)

In the BASIC menu, choose

END POINT.

Adjust the servo's end points.

(Ex: flap servo)

Return to BASICmenu.

Open THR-CUT function.

Activate the function. Choose desired

switch and position to activate.

With THROTTLE STICK at idle, adjust the

rate until the engine consistently shuts

off, but throttle linkage is not binding.1

Close.

Open the THR-CV/NOR function.

Adjust if needed. Close the function.

Open the PIT-CV/NOR function.

Adjust each point to match desired

curve. (Ex first point: 89%.)

Close the function.

Open the REVO-MIX function. Adjust to

your desired starting point. (Ex: 10%.)

Close the function.

to REVERSE.

to choose REVERSE.

to CH4: RUDD.

so REV is selected.

Repeat as needed.

to END POINT.

to choose END POINT.

to

to OFF.

ELEV.

ELEVATOR STICK.

until up travel is as desired.

ELEVATOR STICK.

until down travel is as desired.

Repeat as needed.

to THR-CUT.

to SW.

to A-DOWN.

A to down position.

THROTTLE STICK.

to RATE.

to THR-CV/NOR.

to 95%. to next point. Repeat.

to PIT-CV/NOR.

to 89%. to next point. Repeat.

to REVO-MIX.

to 10%.

to 15%.

With radio on, move helicopter's tail to the right by hand.

The gyro should give right rudder input (leading edge of the tail rotor blades

move left).

If the gyro gives the opposite input, reverse direction on the gyro unit itself.

until shuts off.

to ON.
1Periodically move the throttle stick to full and back down to ensure proper servo settings.

2 It is critical that dials VR be centered when the pitch and throttle curves are setup.

60

Be sure to follow your model's instructions for preflight checks, blade tracking, etc. Never assume a set of blades is

properly balanced and will track without checking.

Check receiver battery voltage! Always check voltage with a voltmeter prior to each and every engine start.

(Never assume being plugged in all night means your radio gear is ready to fly). Insufficient charge, binding servo linkages,

and other problems can result in a dangerous crash with the possibility of injury to yourself, others and property.

Confirm the swashplate is level at 0 travel. Adjust arms if needed.

Apply full collective and check that the swashplate remained level and there is no binding. Repeat for full cyclic pitch and

roll. If not, adjust as needed to correct in END POINT: see p. 32.

Important note: prior to setting up throttle hold, idle-ups, offsets, etc., be sure to get your normal condition operating properly.

Where next?(Other functions you may wish to set up for your model.)

THROTTLE HOLD: P. 67.

SUB-TRIM p. 40 and separate trims for conditions (OFFSETS): p. 70.

IDLE-UP p. 69.

Rudder-to-throttle and other programmable mixes p. 53.

Checking setup prior to going airborne: Check voltage! Then, with the assistance of an instructor, and having completed

all range checks, etc, gradually apply throttle until the helicopter becomes "light on the skids." Adjust trims as needed to

correct for any roll, pitch, or yaw tendencies. If the tail "wags," the gyro gain is too high. Decrease gyro gain.
HELI-SPECIFIC BASIC MENU FUNCTIONS

MODEL TYPE: This function of the PARAMETER submenu is used to select the type of model programming to be used.

Before doing anything else to set up your model, first you must decide which MODEL TYPE best fits your aircraft. If

your transmitter is a 7CA, the default is ACRO. If it is a 7CH, the default is HELI(H-1).

HELICOPTER SWASHPLATE TYPES:

The 7C radios support 6 basic swashplate setups, including "single servo" (H- 1 - most helicopters use this type) and 5

types of CCPM (cyclic and collective pitch mixing). A "single servo" swashplate uses one servo for each axis: aileron,

elevator (cyclic pitch), and collective pitch. CCPM helicopters utilize a combination of servos working together to achieve

the 3 axes of motion. There are 5 basic CCPM types, displayed below. CCPM has several advantages, the most obvious

of which is far less mechanical complexity to properly move the swashplate of the helicopter. Additionally, several servos

working in unison (ex: HR3, all 3 servos together create elevator movement) dramatically increases the torque available as

well as the precision and centering.

Please note that some helicopters are type HR3 or HN3, except off by 180 degrees. For example, the Kyosho® CaliberTM is

HR3 but with the 2 parallel servos to the rear of the helicopter, not front. If your model's swashplate is off by 180 degrees,

you will still use that swashplate type, but also use SWASH AFR (p.63) to adjust the functions as needed until it operates

properly. Additionally, different angles of CCPM may also be created utilizing the fully assignable programmable mixes.

(See our Frequently Asked Questions area at www.futaba-rc.com\faq\faq-7c.html for specific examples.)

Not operating quite like you expected? In many CCPM installations you need to either reverse the direction of a specific

function (SWASH AFR) or reverse a single servo's direction (REVERSE). See SWASH AFR for details.(p.63)

Swashplate Type Setting Procedure

HELI H-1 Type : Independent aileron, pitch and elevator servos linked to the

swashplate. Most kits are HELI H-1 type.

HELI H-2 Type : pushrods positioned as shown. Elevator operates with a mechanical

linkage. With Aileron inputs, the aileron and pitch servos tilt the swashplate left and

right; with Pitch inputs, the aileron and pitch servos raise the swashplate up and down.

HELI HE3 Type : pushrods positioned as shown. With Aileron inputs, the aileron and

pitch servos tilt the swashplate left and right; with Elevator inputs, the servos tilt the

swashplate fore and aft; with Pitch inputs, all four servos raise the swashplate up and down.

HELI HR3 Type: pushrods positioned as shown. With Aileron inputs, the aileron and

pitch servos tilt the swashplate left and right; with Elevator inputs, the three servos tilt

the swashplate fore and aft; with Pitch inputs, all three servos raise the swashplate up

and down.

HELI HN3 Type: pushrods positioned as shown. With Aileron inputs, the three servos

tilt the swashplate left and right; with Elevator inputs, the elevator and pitch servos tilt

the swashplate fore and aft; with Pitch inputs, all three servos raise the swashplate up

and down.

Pitch Aileron

Front

Aileron Pitch

Front

(Pitch) (Aileron)

Elevator

Aileron

(Pitch)

Pitch

(Aileron)

Front

Elevator

120

120 120

HELI H-3 Type : pushrods positioned as shown. Fundamentally, the servo operations

of H-3 type are almost same as HR3 type.

However, the servo arrangement about elevator operation differs.

Aileron

(Pitch)

Pitch

1:1

(Aileron)

Front

Elevator

Aileron

Pitch

Front Elevator

120

120

120

61
GOAL of EXAMPLE: STEPS: INPUTS:

Note: Radio shows progress on screen as the model memory is being copied and beeps once upon completion. If the power switch is turned off prior

to completion, the data will not be changed.

62

Change the MODEL TYPE of model #3

from aircraft to 120 degree CCPM with 2

servos working in unison for collective

pitch and aileron [HELI(HR3)].

Where next?

Confirm you are currently using the

proper model memory. (example: 3)

Open PARAMETER submenu.

Change to the desired MODEL

TYPE(example, HR3.)

Confirm the change.

Close.

On home screen, check model name

and # on top left and right.

If it is not the correct model (example:

3), see MODEL SELECT, p. 25.

for 1 second.(If ADVANCE, again.)

to PARAMETER.

to HR3.

for one second.

"sure?" displays. to confirm.

If a single servo is not operating properly, REVERSE: see p. 31.

If a control is operating backwards (i.e. Elevator), see SWASH AFR, p. 63.

If unsure see SWASH AFR.
SWASH AFR [HELI(H-2/HE3/HR3/H-3/HN3)only]:

Swashplate function rate settings (SWASH AFR) reduce/increase/reverse the rate (travel)

of the aileron, elevator (except H-2 ) and collective pitch functions, adjusting or

reversing the motion of all servos involved in that function, only when using that

function. Since these types utilize multiple servos together to create the controls, simply

adjusting a servo's REVERSE or END POINT would not properly correct the travel of any

one control. Since H-1uses one servo for each function, there is no need for AFR in H-1.

This is fairly hard to explain but easy to see, so let's set up Kyosho Caliber's swashplate settings as an example. With

everything installed per factory instructions, set the model to HELI(HR3) . Now let's adjust the swashplate properly.

Since aileron always uses no more than 2 servos, check it first. Either both operate properly (no change needed), both

operate backwards (reverse the whole function), or one servo operates backwards (reverse that servo alone).

Next check elevator. Remember, the aileron servo(s) operate correctly, so if elevator does not, we should only have 2

choices left - the whole function needs to be reversed, or the servo(s) not shared with aileron need to be reversed.

Last is collective. If aileron and elevator are working properly, the only thing that could be wrong is the whole direction

collective operates (reverse the whole function). In our example, HR3 is 180 degrees off from the swashplate of the Caliber.

The collective pitch operation is backwards; but reversing all three servos would also reverse the aileron and elevator

operations. Changing the collective pitch rate, however, from +50% to -50%, will reverse the collective pitch without

affecting the aileron action.

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CHECKING FOR PROPER MOTION ON AN HR3 SWASHPLATE

GOAL of EXAMPLE: STEPS: INPUTS:

64

Adjust the travel of the collective pitch

from +50% to -23%, reversing the

travel of all 3 servos and decreasing

their travel in collective pitch only, on

an HR3 MODEL TYPE.

Where next?

Open SWASH AFR function.

Adjust PIT travel to -23 .

Close the menu.

for 1 second.(If ADVANCE, again.)

to SWASH

to -23%.

Confirm the swashplate is level at 0 travel. Adjust arms if needed.

Apply full collective and check that the swashplate remained level. If not, adjust

servo's travels as needed to correct. END POINT: see p. 32.

Set up the normal condition: (TH-CV/NOR, PI-CV/NOR, REVO./NOR): see p. 65.

Set up D/R,EXP: see p. 34.

HR3 Swash Type

AILERON STICK.

ELEVATOR STICK.

RUDDER STICK.

THROTTLE STICK.

PROPER MOTION

Swashplate tilts right.

Front of swash plate moves

down; back of swashplate

moves up.

The leading edges of tail

blades rotate left.

Entire Swashplate lifts.

WRONG MOTION

Swashplate tilts left.

Back of Swashplate moves up.

Back of Swashplate moves

down.

Swashplate moves the

opposite.

Entire swashplate moves up.

Blades rotated right.

Swashplate lowers.

HOW TO FIX

Reverse AIL setting in

SWASH to -50%.

Ch6 servo moves

incorrectly; REVERSE.

Ch1 servo moves

incorrectly; REVERSE.

Reverse ELE setting in SWASH.

(ex: +50 to -50 )

Ch2 servo moves

incorrectly; REVERSE.

REVERSE the rudder servo.

Reverse PIT setting in SWASH.
Setting up the Normal Flight Condition: The Normal flight condition is typically utilized for hovering. The throttle and

collective pitch curves are adjusted to provide consistent engine RPM despite the increase/decrease in collective pitch of

the blades. This keeps the engine from "bogging down" under excessive load (like trying to accelerate a car on a steep hill

in 5th gear) or excessive RPM under insufficient load (like flooring the throttle while in neutral), risking engine damage.

As the 2 curves and revo. mixing are all interrelated, we will discuss all three first, then complete a sample setup.

Note that the normal throttle and pitch curves and revo mix are all available in the BASIC menu for simplicity. These may also be

updated later in the ADVANCE menu with the settings for the other 3 conditions [idle-up 1 (IDL1), idle-up 2 (IDL2) and throttle

hold (HOLD)]. Note: The throttle and pitch curves for the normal condition are always on. They cannot be inhibited. The

other three conditions are activated with their throttle curves or throttle hold. For idle-ups, see p. 69. For throttle hold, see p. 67.

TH-CV/NOR: inputs the normal (NORM) throttle curve, which is usually not a linear response to THROTTLE STICK motion.

Adjusting point 3 of the curve adjusts the engine's RPM at the THROTTLE STICK midpoint - the desired position for

hovering. The other 4 points are then adjusted to create the desired idle and maximum engine speed, and a smooth

transition in-between. For more on throttle curves, see p. 69.

PI-CV/NOR: inputs the normal (NORM) collective pitch curve, the collective pitch curve for flight near hover. The

normal collective pitch curve is adjusted to match the throttle curve, providing the best vertical performance at a

constant engine speed, with a starting curve of -4 base, +5 neutral, and +8 to +10 degrees of blade pitch maximum*.

You can program the response over a 5-point curve for the best collective pitch angle relative to THROTTLE STICK

movement. For more on collective pitch curves, see p. 69.

REVO.: mixes collective pitch commands to the rudder (a PITCH-RUDDER mix) to suppress the torque generated by

changes in the main rotor's collective pitch angle, keeping the model from yawing when throttle is applied. REVO.

is extremely helpful in "taming the tail" of models not using heading-hold/AVCS gyros. Never use revo. mixing

in conjunction with a heading-hold/AVCS gyro while in heading-hold/AVCS mode.

Revo. mixing is still used with these gyros while set to the normal mode. For details on revo, including default points

for clockwise and counterclockwise rotating rotors, see p. 69.

*These default recommendations assume you are doing forward flight. If you are just learning, please follow your instructor's guidance. Some

instructors like a +1 base point for training so that the helicopter comes down very slowly, even if your instincts pull the throttle/collective stick to

the bottom in a hurry.

65
GOAL of EXAMPLE: STEPS: INPUTS:

THROTTLE CUT: The THR-CUT function is used to kill the engine at the end of a flight. The engine can be stopped with

one touch of any switch, eliminating the need to move the trim to kill the engine and then readjust prior to each flight. The

helicopter THR-CUT includes an ON/OFF throttle position (normally a little above idle). You must move the THROTTLE

STICK back below the set point before the THR-CUT function can be reset, to avoid sudden engine acceleration. For a detailed

example of throttle cut setup, see ACROp. 33.

Note: Be sure to add the step of setting a trigger point by cursoring to THR, then putting the

THROTTLE STICK in the desired position and pressing and holding the dial for one second.

Notice that this function cannot be reversed to trigger only above the stick point.

66

Set up Normal Flight Condition

Throttle/Collective Pitch Curves

and Revo.

Base point: Adjust base point of

throttle curve until engine idles

reliably on ground. Adjust base point

of collective pitch curve to achieve -4

degrees of blade pitch.

Apply throttle until the model sits

"light" on its skids. Adjust base point

of REVO. until model does not rotate

its nose at all.

Hover point: Adjust collective pitch curve

to +5 degrees. Ease heli into a hover.

Land/shut engine off. Adjust throttle

curves and rudder trim. Repeat until

model hovers smoothly at half throttle.

Rapidly apply throttle from 1/4 to 1/2

stick. Adjust REVO. points 2 and 3

until the model does not rotate its

nose upon throttle application.

High point: Adjust collective pitch

curve to +8 to +10 degrees. From

hover, throttle up rapidly. If engine

bogs, increase the throttle curve. If

engine over-revs, increase the

collective pitch curve at points 4 or 5.

Apply full throttle while hovering, then

descend back to hover. Adjust REVO.

until the nose does not change heading.

Where next?

Open the THR-CV/NOR function.

Adjust the first point. (Ex: 5%.)

Open the PIT-CV/NOR function.

Adjust the first point. (Ex: 8%.)

Open the REVO. function.

(Ex: High 5%, Low 10%.)

Adjust THR-CV/NOR.

Adjust PIT-CV/NOR.

Adjust THR-CV/NOR.

Adjust PIT-CV/NOR.

for 1 second.(If ADVANCE, again.)

to THR-CV/NOR.

to 5%.

to PIT-CV/NOR.

to 8%.

to REVO.

to 5%.

Repeat above as needed.

Repeat above as needed.

Repeat above as needed.

Repeat above as needed.

to 10%.

GYRO function: see p. 72.

Adjust HOV-THR and HOV-PIT if needed: see p. 71.

Setting up Throttle Hold: see p. 67.

Setting up idle-ups 1 and 2: Throttle and collective pitch curves and revo.

mixing (TH-CURVE, PI-CURVE, REVO. MIX): see p. 69.

D/R,EXP: see p. 34.
HELI-SPECIFIC ADVANCE MENU FUNCTIONS

THR-HOLD: This function holds the engine in the idling position and disengages it from the THROTTLE STICK when SWITCH

E (7CH) or G (7CA) is moved. It is commonly used to practice auto-rotation.

Prior to setting up THR-HOLD, hook up the throttle linkage so that the carburetor is

opened fully at high throttle, then use the digital trim to adjust the engine idle

position. To have THR- HOLD maintain idle, move the THROTTLE STICK to the idle

position, then move the hold SWITCH on and off and keep changing the offset value

until the servo does not move. To lower the engine idle speed, or if you want to shut

off, input a more negative number.

Adjustability:

Idling position: Range of -50% to +50%centered about the throttle idle position to get the desired engine RPM.

Rudder offset: Offsets the tail rotor pitch. Keeps the fuselage from rotating in throttle hold.

Switch assignment: Assigned to SWITCH G (7CA) or E (7CH) down. Not adjustable.

Throttle curve: Since the throttle is moved to a single preset position, no curve is available for THR-HOLD.

Collective pitch curve: Independent curve, typically adjusted to create a blade pitch range of -4° to +6° to +12°, is

automatically activated with THR-HOLD.

Revo. mix: Since revo. mix adjusts for torque from the engine, no revo. mix is available for THR-HOLD.

Priority: The throttle hold function has priority over idle-up. Be sure that the throttle hold and idle-up SWITCHES are in the

desired positions before trying to start the engine. (We recommend starting your engine in throttle hold for safety reasons.)

GOAL of EXAMPLE: STEPS: INPUTS:

67

Set up throttle hold.

Determine desired throttle position by

idling engine, turn on THR-HOLD, and

adjust percentage as required to reach

the desired running point.

Where next?

Open THR-HOLD function.

Activate the function.

Set desired engine position.

Optional: set up a rudder offset.

Close.

for 1 second.(If basic, again.)

to THR-HOLD.

to OFF.

to desired percent.

to OFF. to desired offset.

PIT-CURVE for THR-HOLD: see p. 69.

GYRO setup: see p. 72.

Setting up the Idle-Ups: Throttle and Collective pitch Curves and Revo. Mixing

(TH-CURVE, PIT-CURVE, REVO. MIXING) for idle-ups: see p. 69.

D/R,EXP: see p. 34.
THR-CURVE and PIT-CURVE: These 5-point curves are utilized to best match the blade collective pitch to the engine RPM for

consistent load on the engine. Curves are separately adjustable for normal, idle-up 1 and idle-up 2. In addition,

a separate collective pitch curve is available for throttle hold. Sample curves are displayed in the appropriate setup types

(ex: normal flight condition, p. 65) for clarity.

Suggested defaults:

Normal: Collective pitch curve that results in points 1, 3 and 5 providing -4, +5, (+8 to +10)* degrees pitch. A throttle

curve setting of 0, 30, 50, 70, 100%.

Idle-up 1: Idle-ups 1 is typically the same except for the gyro settings, with heading-hold/AVCS mode.

The pitch curve will likely be similar to the normal curve above.

Idle-up 2: Collective pitch curve that results in points 1, 3 and 5 providing (-8 to -10), 0, (+8 to +10) degrees. A

throttle curve of 100, 75, 50, 75, 100 to provide full throttle for inverted maneuvers.

Throttle Hold pitch curve: Start with the normal pitch curve (for inverted autos, start from the idle-up 2 pitch curve), but

increase the last point approximately 1-2°, if available, to ensure sufficient pitch at landing.

*(These default recommendations assume you are doing forward flight. If you are just learning, please follow your instructor's guidance. Some

instructors like a +1 base point for training so that the helicopter comes down very slowly, even if your instincts pull the throttle/collective stick to

the bottom in a hurry.)

Adjustability:

Normal condition curves are editable in the BASIC menu for convenience.

All curves may be adjusted in the ADVANCE menu.

Automatically selected with the proper condition.

The idle-up curves are adjusted by the modeler to maintain constant RPM even when the collective pitch is reduced

during flight (including inverted).

To change which condition's curve is being edited, simply press the MODE/PAGE BUTTON to scroll through the curves

available, or cursor up above point 1 and change the curve named.

For clarity, the name of the condition currently active (switched on in the radio) is shown in parentheses behind name

of condition whose curve is being edited.

Idle-ups and throttle hold pitch curves may be edited even before the conditions have been made active or while they

are active but not selected.

REVO. MIX: This linear curve mix adds opposite rudder input to counteract the changes in torque when the speed and

collective pitch of the blades is changed.

Adjustability:

REVO.MIX: normal for hovering and idle-ups (1 and 2) combined.

REVO.MIX is editable in the BASIC and ADVANCE menu.

68
Revo. mixing rates are linear curves. For a clockwise-turning rotor, the rudder is mixed in the clockwise direction

when collective pitch is increased; for counterclockwise-turning, the opposite. Change the operating direction setting

by changing the signs of the numbers in the curve from plus (+) to minus (-) and vice versa.

Revo. curves for idle-ups are often v-shaped to provide proper rudder input with negative pitch and increased throttle

during inverted flight. (Rudder is needed to counter the reaction whenever there is increased torque. In inverted flight,

throttle stick below half has increased throttle and negative pitch, therefore increasing torque and rotating the

helicopter unless the revo. mix is also increasing appropriately.)

IDLE-UPS: additional flight conditions available specifically for helicopters. These additional flight conditions contain

different throttle curves, collective pitch curves, and trims to make the helicopter perform

certain maneuvers more easily. Lastly, the gyro and dual rate functions may be set to provide separate rates per condition

selected, including one for each idle-up.

One of the most common flight conditions can easily flip from upright to inverted and back. To do so, the pitch curve is

set to 0 pitch at half stick, positive pitch (climb upright) above half, and negative pitch (climb when inverted) below half

stick. The throttle curve is adjusted to allow the engine to run consistently throughout the changes in pitch.

Additional idle-ups may be used to maximize the helicopter's flight characteristics in certain types of flight (i.e. fast

forward motion, backward) or maneuvers (loops, rolls, stall turns), or even the same maneuver but changing from headinghold/AVCS gyro mode to normal gyro mode. The 7C provides 2 idle-ups to allow the modeler 2 additional setups along

with the normal flight condition.

Adjustability:

SWITCH G (7CA) or E (7CH) is programmed for normal (NORM), idle-up 1 (IDL1), and idle-up 2 (IDL2) curves. This

switch/position assignment is not adjustable.

Activated with the throttle curve for that condition in THR-CURVE.

Curves are adjusted to maintain constant RPM even when the collective pitch is negative (inverted).

Gyro settings may be set separately for each idle-up. (See p. 72.)

Activating OFFSET makes the TRIM LEVERS adjust the trim separately in each of the idle-up conditions.

Dual rates may be set up to allow tri rates - a rate for each of the 3 primary controls in normal/idle up conditions.

For an example of throttle and pitch curves and revo, please see Normal Flight Condition Setup, p. 65.

69
OFFSET: Optional separate trims in addition to those for the normal condition. This function is used to automatically change

the trim of a helicopter, for example, when transitioned from hover to flying at high speed. A clockwise-rotation rotor

helicopter tends to drift to the right at high speed, so an aileron offset may be applied to offset the helicopter to the left.

The necessary elevator offset varies with model geometry, so it must be determined by noting collective pitch changes at

high speed. The rudder offset is affected by both revo. mixing and trim lever movement while in the offset function.

Adjustability:

Complete switch assignability, plus a CONDITION option that creates/switches between individual trims for each of the

idle-ups.

When OFFSET is active (its switch is on), moving the TRIM LEVERS adjusts the stored offset, not the trims in the normal

condition.

When OFFSET is inactive (its switch is off), the OFFSET and any trim adjustments to it have no effect (model obeys the

trim settings of the currently-active flight condition.)

Defaults to INH.

When OFFSET is inhibited, trim adjustments made in any flight condition affect all flight conditions.

NOTE: Remember, offsets and revo. mixes are not recommended when using heading-hold/AVCS gyros in AVCS mode

because they conflict with the automatic corrections to trim and torque that AVCS provides.

GOAL of EXAMPLE: STEPS: INPUTS:

70

Set up separate trims for each of the

two idle-up conditions.

Adjust the idle-up 2 rudder trim to

correct for torque at high speeds.

Where next?

Open the

Activate the function.

OFFSET function.

Change switch setting to E

Select IDL2.

Adjust trim settings as needed. (Ex:

rudder to +8%.)

Close menus and confirm difference in

trims between normal and idle-up 2.

for 1 second.(If basic, again.)

to OFFSET.

to +8%.

E (7CH) or G (7CA) from

NORMALto IDL2. Check that rudder

trim changes.

THR-HOLD: see p. 67.

Setting up the Idle-Ups: Throttle and Collective pitch Curves and Revo. Mixing

(TH-CURVE, PIT-CURVE, REVO. MIXING for idle-ups: see p. 69.

to E.

to OFF.

to 2 (IDL2).
HOVERING ADJUSTMENTS (HOV-THR and HOV-PIT):

Hovering throttle and hovering pitch are fine-tuning adjustments for the throttle and collective pitch curves individually,

af

Note: HOV-THR is active in normal with and option for normal and idle up 1. HOV-PIT is only active in normal

condition.

fecting performance only around the center point. They allow in-flight tweaking of the curves for ideal setup.

Adjustability:

Rotor speed changes caused by temp., humidity

HOV-THR and HOV-PIT can assign the knob VR only to one of these functions at a time. Each time, assign the knob

, altitude or other changes in flying conditions are easily accommodated.

Both adjustments may be inhibited if not desired.

in these functions. Temporarily turning off the knob but maintaining the last memorized setting.

Adjustments may be memorized and then the knobs returned to center point to use that amount of adjustment. Allows

easy use of the trimming knobs for multiple models. (Note that when memorization is repeated with the knob offset

from center, the trim value accumulates.)

Adjustments are quickly reset to the initial value by turning the dial until the trim reads 0%, memorizing, then

returning the knob to its center position.

Note that all functions, including these, assume the model hovers at half stick.

Available in normal condition only.

GOAL of EXAMPLE: STEPS: INPUTS:

71

Fine-tune hovering with the hovering

adjustments. Remember these affect

only the hovering (normal) condition.

Adjust throttle and collective pitch

curves until model hovers nicely. In

flight, adjust collective pitch and

throttle curves near hover point

independently with HOV-THR and HOVPIT knobs.

Store new settings after flight.

Where next?

Open the HOV-THR function.

Assign the dial VR.

Store the current dial settings prior to

selecting another model.

Close.

Open the HOV-PIT function.

Store the current dial settings prior to

Change VR to OFF.

setting HOV-THR function.

Close.

for 1 second.(If basic, again.)

to HOV-THR.

to ON.

for one second to store.

or VR to center.

to HOV-PIT.

for one second to store.

or VR to center.

to OFF.

THR-HOLD: see p. 67.

Setting up the Idle-Ups: Throttle and Collective pitch Curves and Revo. Mixing

(TH-CURVE, PIT-CURVE, REVO. MIXING for idle-ups: see p. 69.

D/R,EXP: see p. 34.

In flight, adjust throttle curve near hover point with the knob.
GYROS : Using electronics to take some of the complexity out of setups and flight.

What is a gyro? A gyroscope is an electronic unit that senses motion and corrects for it. For example, if the wind blows

your helicopterís tail to the left, a gyro will sense that motion (and confirm that no input was given) and will correct for it.

How does it help in helicopter setup? A good gyro will totally eliminate the need for revo. mixing. The gyro will sense

and correct the unwanted motion for you, so you don' t have to spend time to get a complex curve operating properly.

Gyro sensor kinds: There are many different kinds of gyros. Early gyros were mechanical, with a spinning drum similar

to a child's gyroscope toy. The next generation utilized a special type of crystal, called piezoelectric, which sensed the

motion and provided an electrical pulse. The finest gyros at the time of this writing are SMM technology. These silicone

micro machines, or computer chips, sense the motion. SMM is far more accurate and less susceptible to inaccuracies

caused by temperature changes, etc.

Types of gyro responses:

• Normal: sense motion and dampen it (if the gyro rotates off course for 2 seconds, it corrects for 2 seconds).

• Heading-hold/AVCS: calculate the angle of rotation (by tracking the time/rate of change) and then provide correction

until the same rotation is achieved.

• Stick priority: a feature on most high-end gyros. The more input given on the channel the gyro controls, the less

sensitive the gain is automatically. This way, if you give a large input for a stall turn, for example, the gyro turns itself

off and does not fight the stall turn. As you ease off the rudder, the gain increases again, minimizing tail wag and

keeping the model straight. (If your gyro does not include stick priority, you can manually create it. Please see

www.futaba-rc.com\faq\faq-7c.html.)

Choosing the right gyro for your skills, your helicopter, and your budget:

• Mechanical: some are still available. They are very challenging to set up and not as reliable as piezo or SMM.

• Non-Heading-Hold Piezo: these are now inexpensive gyros that are reliable and easy to set up. Some have dual rates

and remote gain control to adjust sensitivity in flight. Lack heading-hold capabilities for precision flying.

• Heading-Hold Piezo: Until recently, the cream of the crop. Expensive, and more complex to set up. Adds GPS-like heading

recognition. Exhibits minor difficulties with temperature drift (position setting varying with unit's temperature).

• Heading-Hold SMM: 21st Century gyro technology. Computer chip technology. Expensive, easier set up, higher durability.

Significant decrease in temperature sensitivity. Many include frame rate settings to allow faster response when using

specialized digital servos. Examples:

• GY401: Simpler set up. Ideal for learning aerobatics through 3D.

• GY502: Better centering than 401 for more advanced aerobatics. Ideal through Class III competition.

• GY601: Exceptional center. Extremely fast response time. Requires specialized servo.

GYRO: simplifies adjusting/selecting the gyro sensitivity, and can provide more than 2 gyro gain settings. (The higher the

gain, the more correction the gyro provides and the "softer" or less responsive the helicopter feels.) This function

makes the best possible use of the inflight adjustable gain of most gyros..

Adjustability:

• Plug the gyro's sensitivity adjustment to channel 5 of the receiver. (not assignable)

• STD and AVCS/Heading-hold (GY) setup types available to simplify adjustments for AVCS/Heading-hold gyros.

• Full switch assignability or may select Cond.option.

• Each gyro setting may be set from 0 to 100% gain.

• Dual mode gyros (heading-hold/AVCS and normal) are easily triggered to each mode by changing the gyro settingís

sign.

• Larger percentages indicate more gain, or gyro responsiveness.

• Tail wagging or shaking indicates excessive gain settings. Turn down gyro setting until wag stops.

72
Gain Example for AVCS/Heading-hold Gyros (GY)

GOAL of EXAMPLE: STEPS: INPUTS:

73

Set up a heading-hold/AVCS gyro with

heading-hold/AVCS setting in idle-up

1 and normal mode setting in

idle-up2 and normal.

Where next?

Open and activate the GYRO function.

Optional: change gyro type to

Heading-hold (GY).

Optional: change switch assignment.

Ex: select E.

Adjust gyro rates as needed. (Ex:

NORM to A80%, IDL1 to A70%, IDL2

to N70% as starting points.)

Close the function.

for 1 second.(If basic, again.)

to GYRO.

to SW.

to E.

to A80%.

to A70%.

to N70%.

D/R,EXP: see p. 34.

to ON.

to GY.
74

GLOSSARY

3D: Common name for certain types of aerobatic maneuvers. Aircraft: flying below the modelís stall speed, such as

torque rolls. Helicopters: combining 2 or more maneuvers, such as rolling loop.

4.8V: 4.8 volt battery pack, made of 4 Ni-Cd 1.2V cells. See Accessories.

5-cell: 6.0 volt battery pack, made of 4 alkaline cells or 5 Ni-Cd cells. See Accessories.

6V (6Volt): battery pack, made of 4 alkaline cells or 5 Ni-Cd cells. See Accessories.

Accessories: additional optional items which may be used with your 7C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

ACRO: model type designed for use with powered aircraft. Selected in the PARA submenu under TYPE . . . ... . . . . ..29

ACT. Active. Make a feature able to be utilized. Opposite of INH. Only visible in certain features.

Adjustable Function Rate: see SWASH AFR.

Adjustable Servo Travel (AST): a specific type of end point adjustment. See END POINT.

Adjustable Travel Limited (ATL): End point adjustment for low end only, for throttle channel. See ATL.

Adjustable Travel Volume (ATV): an older, less specific term for end point adjustment. See END POINT.

ADVANCE menus: Specific menus for each model type which allow the modeler to access and program the radio's more

advanced features.

AFR: Adjustable function rate. Used only in HELI model types with CCPM heads. See SWASH AFR.

AIL-2: second aileron servo assignment. See Twin aileron servos.

Aileron: surface that controls the roll of the model. Also called cyclic roll on a helicopter.

Aileron-to-flap mixing: Mixing used to create full-span aileron action. Not a preprogrammed mix. See Programmable

mix.

Aileron-to-rudder mix: Mixing that automatically creates a "coordinated turn". Not a preprogrammed mix. See

Programmable mix.

Aileron Differential: Decreased down aileron travel when compared to up aileron travel. Minimizes "dragging" the low

wing and creates more axial rolls. See Twin aileron servos. ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

AIRBRAKE: (ACRO) Combines elevator and flap to suddenly slow the model for spot landings. May be triggered by

THROTTLE STICK POSITION.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

AMA: Academy of Model Aeronautics. Non-profit organization governing model aircraft flight in the US. . . . . . . . . .5

AST: Adjustable Servo Travel. See END POINT.

ATL: Adjustable Travel Limited. Standard type of trim used for throttle, where the trim is effective only in the idle portion of the

THROTTLE STICK POSITION. Normal trims affect the entire travel of the servo (ex: elevator trims), but ATL trims only the low end

of the throttle movement, allowing throttle idle adjustments that don't over-drive the servo at full throttle. . . . . . . . . . . . . . . .31

ATV: Older, less clear terminology for end point adjustment. See END POINT.

Autorotation: The ability of a helicopter to land safely without engine power, using the stored energy in the blade's

rotation to produce lift for flaring.
Backup battery: battery used to protect data storage in case of removal of master transmitter battery. In most Futaba

radios, including the 7C, EEPROM data storage is used, so no backup battery is used or needed.

BACKUP ERROR: transmitter's hard-coded memory has been lost. Send for service immediately. . . . . . . . . . . . . . . . . .19

Base-Loaded antenna: also called Whip antenna. Aftermarket equipment not approved by Futaba.

Basic model setups: guidelines to setting up the most basic models of each type. . . . . . . . . . . ..............ACRO22

HELI 58

BASIC menus: Specific menus with most commonly used features for each model type. . . . . . . . . . . . . . . . . . . .ACRO25

HELI 58

Battery care and charging. (Charging the Ni-Cd batteries) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Battery FailSafe: determines how the receiver indicates an airborne pack low-battery warning. Defaults: 56% throttle,

requires throttle to idle to override. To adjust the warning point, set a THROTTLE STICK POSITION in F/S. . . . ......... 41

BEEP: tone emitted by transmitter to signify a variety of situations. See Error messages.

Binding: friction in a joint exceeding the movement of the linkage. Sticking or inability to continue movement. The servo

continues to attempt to move the surface beyond its power/capabilities, rapidly draining battery power as it continues to struggle.

Buddy Box: see Trainer box.

CCPM: Cyclic (pitch and roll) Collective Pitch Mixing. Multiple servos work in unison on the helicopterís head to create one

or more of the control functions. Ex: 3 servos set at 120 degrees operate the entire head. The 2 forward servos work together to

rotate both the bladeís pitch and the roll cyclic (aileron) in a HR3head type. See MODEL TYPE,HELI.

Charge: to increase the electrical energy, measured as voltage, available in a battery pack. See Battery care and charging.

Condition: (HELI) separate flight setup that has significant adjustability separate from the basic model setup. See IDLEUP 1, 2 and THROTTLE HOLD.

Contact information, North American Service Center. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

75

Copy model: see MODEL COPY.

Crow: see AIRBRAKE(ACRO).

Cursor: See SELECT BUTTONS.

Cyclic: horizontal controls on a helicopter. Cyclic pitch is typically called elevator. Cyclic roll is typically called aileron.
Data reset: erase all data in a specific model. See RESET.

Delta peak charger: common name for a specialized charger designed and required to properly peak charge both NiMH

and NiCd batteries, actually called a Zero Delta V Peak Charger. See Battery Care and Charging.

Dial: transmitterís rotary control and button used in various ways during programming. . . . . . . . . . . . . . . . . . . . . . .11

Differential: uneven movement in each direction of a control surface. Usually used when discussing ailerons or when

describing an undesirable unevenness in movement of other controls. See Twin aileron servos.

Diode: an electronic device which only allows current to flow one direction. Used to protect radio against power surge

and reversed polarity during charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Discharge: to deplete the electrical energy in a battery pack, usually to its lowest safe voltage, for storage or as a part of

regular maintenance. See Battery care and charging.

Dual aileron servos: (ACRO) a model using 2 servos on 2 separate channels to operate ailerons. May include

flaperon action. See Twin aileron servos. ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Dual elevator servos: (ACRO) a model using 2 servos on 2 separate channels to operate elevators. Includes elevon,

V-tail.

Dual rates (D/R,EXP): reduce/increase the servo travel by flipping a switch (or by stick position). Used to make model

more comfortable to fly in different maneuvers. 7C supports triple rates by simply assigning dual rates to 3 position

switches. Includes exponential function, see EXP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Elapsed Time Counter reset: see TIMER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Elevator: surface which controls the modelís rate of climb or descent. Also called cyclic pitch on helicopters.

Elevator-to-flap mix: (ACRO) Used to apply flaps along with elevators to increase lift, allowing modeler to fly at

slower speeds, make tighter loops or turns, etc.

76

Elevator-to-pitch mix: (HELI) used to adjust pitch to counter the loss of angle of attack when elevator input is given. Not

a preprogrammed mix. See Programmable mix. .

ELEVON: flying wing configuration with 2 servos working together to create both aileron and elevator action. ... . . .45

Elevons: two surfaces, one on each wing, which work as both ailerons and elevators. See ELEVON.

END BUTTON: control button used during programming to return to previous menu or close menu altogether.

END POINT: often abbreviated EPA. Adjusts the total travel in each direction of proportional servos regardless of their control

assignment. Ex: adjustment to AIL channel will adjust only the servo plugged into channel 1 even if being used as one of two

flaperons or elevons. Note: End point is not an absolute; mixing can still drive the servo farther than this setting. . . . . . . . . . .32

Engine cut: see THR-CUT.

EPA: see END POINT.

Error messages: warnings/cautions provided by the radio when potential problems may exist. . . . . . . . . . . . . . . . . . .19

Exponential (D/R,EXP): adjustment to the relationship of STICK MOVEMENT to servo movement, typically used to soften

overly sensitive models around center. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
FailSafe (F/S ): sets servo positions when interference is encountered or signal is lost. Available only in PCM

transmission mode. Also includes Battery FailSafe settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Flap-to-aileron mix: (ACRO ) used to create full span flap reaction in flight. Not a preprogrammed mix. See

Programmable mix. .

Flap-to-elevator mix: (ACRO ) used to counteract unwanted changes in pitch when flaps are deployed.

FLAPERON: one servo on each aileron, plugged into channels 1 and 6, which operate both as ailerons and as flaps. . .43

FLAP-TRIM: Adjustment of central position of flaperons, default assigned to CHANNEL 6 KNOB. May also be used as

primary or only control of flaperons acting as flaps, or other mixes may be set up. . . . . . . . . . . . . . . . . . . . . . . . . .44

Frequency: channel on which radio transmits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Frequency band: In the entire spectrum, transmissions are designated in terms of "frequency bands" which exhibit similar

properties. In the US, specific frequencies within the 72MHz band are regulated by the FCC to be used solely for remote

control aircraft. 50MHz band is available for model use by those holding a HAM amateur radio operatorís license. 75MHz

is solely for remote control ground models. 27MHz is legal for air or ground use. . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Function (F) mode of TRAINER, allows student radio to use the computer programming for that channel in the master radio.

Ex: allows a student with a 4-channel transmitter to fly an 8-servo aerobatic plane or a 5-servo helicopter. See TRAINER.

Gain: the responsiveness or amount of control given the gyro. On a high gain, the gyro is very active and overrides

nearly all other actions. Too high a gain may result in ìwaggingî at the surface as the gyro over-corrects repeatedly in

each direction. See GYRO SENS.

Gear doors: covers for retractable landing gear, may be operated separately from landing gear on some models. . . . .56

77

Gyro, gyroscope: equipment that senses change in direction and provides input to compensate for that change. For

description of aircraft use, see p. 56. For description of types, and helicopter use, see GYRO.

GYRO (HELI ): gyro sensitivity programming designed to ease the setup and use of gyroscopes on model helicopters.

Manual pages include extensive descriptions of gyro types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Gyros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Heading-hold gyro: gyro that specifically measures the unwanted deflection angle and compensates until a corresponding angle

has been returned. See Gyros.

HELI: model type, rotary wing. See MODEL TYPE.

Helicopter radio: transmitter that includes helicopter-friendly switch and control layout and sufficient programming to

at least support a 5-channel helicopter. The 7CA and 7CH radios both contain all needed programming. The 7CH has a

more heli-friendly layout (through switch positioning and no ratchet on throttle for easier hovering)

High band: 72MHz equipment on a channel from 36 to 60. Receiver channel may be changed to any channel within the

high band without needing retuning. Transmitter must not be changed except by certified technician. . . . . . . . . . . . . .8

High Rate: See D/R,EXP.

Hover: to maintain a stationary position relative to a point on the ground.

HOVERING PITCH: see Hovering setups.

HOVERING THROTTLE: see Hovering setups.

Hovering setups: in-flight adjustments to pitch and throttle curves around center THROTTLE STICK position (the ideal

hovering point). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

IDLE-UP: separate condition created to allow inverted and other types of flight with a helicopter not easily achieved in

the normal condition. Note: the idle-ups are activated by activating their throttle curves. Also note that OFFSET is

available to create separate trims within each condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

INH: makes a feature inactive/unable to be used. When a function is inhibited, it cannot be used even if the assigned

switch is ON. Turns off functionality without losing any settings. Only visible in specific features.

Inhibit: see INH.

Installation: radio installation and setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Inverted: to fly a model upside-down.

Inverted flight control programming: not available in the 7C. Most modelers no longer use this "crutch" to fly inverted,

instead learning to recognize the model's behaviors when inverted and compensate appropriately.

Kill switch: (1) throttle cut switch to close carburetor (see THR-CUT, p. 33). (2) gasoline ignition engine kill switch

which removes spark to the plugs to stop the engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

78
Linear Mix: a mix that maintains the same relationship of master to slave throughout the whole range. Ex: a mix from

one flap servo to another flap servo at 100% causes the 2nd servo to follow the first servo's movement exactly through

all points of travel. See Programmable mix.

Lithium battery: see Backup battery.

Low Band: 72MHz equipment on a channel from 11 to 35. Receiver channel may be changed to any channel within the

low band without needing retuning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

LOW BATTERY warning: transmitter's battery is below a safe flight voltage. Recharge immediately. See Error messages.

Low rate: see D/R, EXP.

Master: the primary control. See Programmable mix.

Mechanical gyro: uses a mechanical gyroscope (like a child's toy gyro) to sense change of angle. See Gyros.

MHz: Megahertz. Unit used to express frequency. 72MHz channels are aircraft only frequencies; 75MHz are ground model

only frequencies; 27MHz are air and ground both. 50MHz is legal for HAM amateur license holders. See Frequency.

Mix, mixing rate, mix offset: See Programmable mix.

MIXER ALERT warning: notifies user that a mix is activated which is not considered desirable for engine startup. See

Error messages.

Mode: definition of which channels are assigned to which STICK movements. All 7C radios shipped in the US are Mode

2, with elevator and aileron on the right STICK. To change mode, please visit www.futaba-rc.com.

MODE/PAGE BUTTON: control button on radio's face used in various parts of programming. . . . . . . . . . . . . . . . . . . . . .11

MODEL COPY: used to duplicate the settings of one model already in memory into a second model memory. Often used

to set up 2 similar models, or make a copy of a working model to experiment with new setups. . . . . . . . . . . . . . . . . 26

MODEL NAME: gives each model memory an 6-character name for easy recognition. In MODEL submenu. . . . . . . . . .27

MODEL RESET: restore all data in a single model memory to defaults, including name and model type. See RESET.

MODEL SELECT: choose the model memory you wish to modify or fly. In MODEL submenu. . . . . . . . . . . . . . . . . . . .25

MODEL TYPE: select the type of model the aircraft is, including airplane and 6 heli types. . . . . . . . . . . . . . . . . . . .28

MODUL: modulation, means of transmitting data (PPM, PCM). In PARAMETER submenu. . . . . . . . . . . . . . . . . . . . . . .31

Name: see MODEL NAME.

Neckstrap: optional strap to suspend transmitter during use. Futaba stock # FTA8. See Accessories.

79

Ni-Cd: Nickel Cadmium rechargeable battery. Typically used to power transmitter and receiver. See Battery care

and charging.

NiMH: Nickel Metal Hydride rechargeable battery. Newer battery technology than Ni-Cd. Longer run times but more specific

peak charging requirements. [Require a (zero) delta peak charger labeled specifically for use with NiMH batteries.]

NORMAL(N): trainer mode that does not give student radio the computer programming features of the master radio. See Trainer.

NT8S: standard transmitter battery pack. See Accessories.

NULL(--): not assigned or never changed. Ex: a mix which has a null switch assignment is always active, and can never be

changed in flight (turned off) no matter which switch is moved.
OFFSET: (HELI) separate trim settings available to each idle-up setting, or assigned to separate switches from the idle-up

switch. When offset is ON, movement of the trim levers adjusts the OFFSET, not the normal condition's trims . . . . . .70

Offset mix: mix that independently moves the slave servo a set percentage of its total throw, not in relation to any

master. See Programmable mix.

PA2: Pilot Assist. Optional onboard device that uses optical sensors to correct model's orientation to upright.

PARAMETER submenu: sets specific parameters. Includes reset, type, modulation, CH5, and CH7 . . . . . . . . . . . . . .. . . .28

PCM: Pulse Code Modulation. An electronically encoded method of transmitting data to a receiver to help minimize the effects

of interference. (Transmission is on an FM wavelength, and uses FM crystals). See Modulation.

Peak Charger: charger that automatically stops charging when the battery is fully charged (commonly called "peaked").

See Battery care and charging.

Piezo gyro: gyro that uses a piezo crystal to sense angular changes. See Gyros.

Pitch-to-rudder mix: see REVO.

PITCH CURVE: (HELI) curve that sets the response of the collective pitch servo(s) to movement of the throttle/collective

STICK. Independently adjustable in the normal flight mode, one for each of the 2 idle-ups, and one for throttle hold.

Adjusted to provide ideal blade response for various types of maneuvers being performed. For simplicity, the normal

conditionís curve may be set in the BASIC menu. All 3 curves are also adjustable in the ADVANCE menu. . . . . . . . . . .68

PPM: Pulse Position Modulation. Also known as FM. Type of signal transmission. See Modulation.

Programmable mix: used to cause specific servo responses to specific inputs separate from the basic control setups.

Includes extensive definitions of types and examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Range check or test: to test the transmitterís control over the model at a specific distance as a precaution in checking its

proper operation prior to flight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Rate: amount of control given. Ex: see Programmable mix.

RESET: to delete all data in the existing model only. User CANNOT erase all data in the radio. Only service center can

do so. Part of PARAMETER submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Retractable landing gear: landing gear that is brought up into the model during flight. . . . . . . . . . . . . . . . . . . . . . . . .56

REVERSE: servo reversing. Used to reverse the direction of a servo to ease installation and set up. . . . . . . . . . . . . . . . .31

Rudder-to-aileron mix: (ACRO ) used to counteract undesirable roll (roll coupling) that happens with rudder input,

especially in knife-edge. Gives proper aileron input to counteract roll coupling when rudder is applied. Not a

preprogrammed mix. See Programmable mix. This is the default programming for one linear and one curve mix in

ACRO.

Rudder-to-elevator mix: used to counteract undesirable pitch (pitch coupling) with rudder input, especially in knife edge flight.

Not a preprogrammed mix. See Programmable mix.

80

Rudder-to-throttle mix: (HELI) adds throttle to counter the added load from increasing pitch of the tail blades,

maintaining a constant head-speed with rudder. (This is a minor effect and is not critical in most helicopters.) Not a

preprogrammed mix. See Programmable mix.

Rx: receiver.
SELECT (CURSOR) BUTTONS: controls used in various ways during programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Select a model: see MODEL SELECT.

Service Center. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Servo reversing: see REVERSE.

SET: to accept. Usually done by pressing and holding the dial when instructed.

Slave: channel that moves in response to the command of the master. See Programmable mix.

Smoke system: injects a specialized smoke oil into the hot exhaust to create air-show like smoke trails. . . . . . . . . . . .56

SNAP ROLL: (ACRO) combines rudder, elevator and aileron movement to cause the aircraft to snap or spin at the flip of a

switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Stick adjustments: change stick tension and height. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

SUB-TRIM: used to fine tune the center or neutral point of each servo. Allows full trim function from the trim sliders for

flight trimming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

SWASH AFR: (HELI,CCPM types only) adjustment of the travel of all servos involved in the particular control's

movement only during the movement of that control. Ex: reverse the direction of movement of collective pitch while

not affecting the direction of movement of either cyclic control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Swashplate type: (HELI). Part of the model type selection process. Selects specific heli swashplate geometry, such as one

of four available types of "CCPM." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Switch programmability: MANY features are reassignable to a variety of switches, including simply moving an

auxiliary control such as flaps from the stock dial to a switch or other location.

Synthesized receiver: The 7C is compatible with the R309DPS Futaba synthesized receiver that can be used on

any 72MHz channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

81
Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

THR-REV: reverses the throttle trim function to the top of the THROTTLESTICK. ... . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Throttle-to-rudder mix: used to compensate with rudder when throttle is applied on take off. Not a preprogrammed

mix. See Programmable mix.

THROTTLE CURVE: (HELI) adjusts how the servo responds to the THROTTLE STICK position along a 5 point curve. Separate

curves available for each idle-up and normal. For simplicity, normal curve may be edited from BASIC menu. All curves

may be edited together in the ADVANCE menu. Activating an idle-up's throttle curve is what activates that idle-up. .65,68

Throttle cut or throttle kill: THR-CUT. (ACRO/ HELI) Offset mix which closes the throttle servo to a set position when the

assigned switch is moved to shut the engine off without having to fiddle with trim settings. . . . . . . . . . . . . . . . . . . . .33

THROTTLE HOLD: (HELI) makes the throttle servo non-responsive to THROTTLE STICK position, and moves the throttle to idle.

Used to practice autorotations. NOTE: THR-HOLD must be activated, then the default pitch curve adjusted properly.. . . . . . . .67

Throttle trim adjustment: see ATLto change throttle trim from ìidle onlyî to full trim control like all other channels. See

THR-REV to reverse THROTTLE STICK completely, including moving trim to the top of the THROTTLE STICK. See also Idle

management for details on idle down and throttle cut functions.

TIMER: adjust the timer functions, used to keep track of flight time on a tank of fuel, etc. The ìtriggerî to turn timers

on/off may be programmed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

TRAINER: software that allows 2 radios to be connected via trainer cord, giving student control of all or some of the

channels of the aircraft at the flip of a switch. FUNC(F) trainer mode allows student to use mixing in the master transmitter ,

for example dual rates, exponential, fly a 5-channel helicopter with a 4-channel buddy box, etc. . . . . . . . . . . . . . . . .38

Trainer cord: cord used to connect two compatible radios to use for flight instruction. See Accessories.

TRIM menu: adjusts rate at which the trim responds to movement of the trim sliders. Also has a reset function to reset

the modelís electronic trims to zero. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

TRIM OFFSET: (HELI) sets an offset or adjustment of trim when switching between conditions. See OFFSET.

Triple rate: 3rd control travel setting available in flight. See D/R,EXP.

Twin aileron servos: use of 2 or more servos on separate channels to control aileron action. Includes flaperon

and elevon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Twin elevator servos: use of 2 or more servos on separate channels to control the elevator of a model. Includes elevon,

V-tail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Tx: transmitter.

Voltmeter, voltage reading: displays transmitter voltage on home screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

VR : variable rate control. Knob on the radio. See switch assignment chart for default assignments.

82

V-tail model Mix: (ACRO) programming used to control a V-tail modelís tail surfaces, with 2 servos operating 2 control

surfaces as both rudder and elevator.

Warning messages: cautions provided by the radio when certain potential problems exist. See Error messages.

Warranty information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Website: www.futaba-rc.com. Internet location of extensive technical information Futaba products. . . . . . . . . . . . . . . .3

Whip antenna: aftermarket, shortened antenna. Not approved by Futaba.