1M23N17474

R2008SBS-FHSS/FHSS-2.4GHz System
S.BUS Port and 8 Channels for Conventional System
ReceiverThank you for purchasing a Futaba R2008SB S-FHSS/FHSS-2.4GHz compatible receiver.
The R2008SB has an S.BUS system output port and a conventional system channel outputs. It can also be used withconventional system servos, etc. in addition to S.BUS system compatible servos and gyros, etc.

Applicable systems: Futaba S-FHSS/FHSS-2.4GHz system and TM-FH RF Module
Usage precaution• Futaba S-FHSS/FHSS system does not work with current Futaba FASST system. Futaba FASST system andS-FHSS/FHSS system are not compatible each other.

WARNING
Wrap the receiver with something soft, such asfoam rubber, to avoid vibration. Moreover, The receivermust not get wet.
Keep away from conductive material to avoid theshort circuit.

Antenna installation precaution
Do not cut or bundle the receiver antenna wire.
Do not bend the coaxial cable . It causes damage.
The antenna should not be pulled.
Keep the antenna away from the motor, ESC andother noise sources as you can.
Be sure that the two antennas are placed at 90degrees to each other.

signal reception and promote safe modeling Futaba has
adopted a diversity antenna system. This allows thereceiver to obtain RF signals on both antennas and fly
problem-free.

Antenna installation for carbon fuse
WARNING
The antenna portion of 30mm tip must be fully
exposed.
• Please make sure that the exposed portion won't be slided
back in the fuse by the wind pressure or other force during
the ﬂight session.

S.BUS connector insertion precaution
DANGER
Do not insert ac o n n e c t o r, a s s h o w nright.
• It will occur short-circuit, byinserting this way. A shortcircuit across the battery
ter minals may cause
abnor mal heat, fire andburning.

DANGER
5HFHLYHU

Do not insert either a switch
or battery in this manner.

• The R2008SB has two antennas. In order to maximize

R2008SB(Antenna installation)
90˚

Link switch LED(Connectors)
Channel 1 output
Channel 7 output
for conventional
system

CH7S.BUS

S.BUS
Port

Antenna

Channel 8 output
for conventional
system/Battery terminal

CH8/Battery(8/B)

R2S% SpeciÀcations
S-FHSS/FHSS-2.4GHz system/S.BUS port and 8 channels for conventional system receiver• Dual antenna diversity• Size: 0.98 x 1.69 x 0.55 in. (24.9 x 42.8 x 14.0 mm)• Weight: 0.34 oz. (9.5g)• Power requirement: 4.8V to 7.4V
• Battery F/S Voltage: 3.8V
* Be sure that when using ESC's regulated output the current capacity of the ESC must meet your usage condition.
* The Battery F/S voltage is set for 4-cell NiCd/NiMH battery. Battery F/S function doesn't work properly when other type battery is used.
* The fail safe function can be set for each channel , however it differs according to the transmitter. When you use TM-FH RF Module , the fail safe function can be set
for 3-channel only.
* S.BUS port: R2008SB can be used up to 8 channels, however, it differs according to the transmitter. An unused channel is a neutral signal. The F/S setting channel at
F/S is F/S position. Another, it is Hold signal.

Link to the transmitter1 Bring the transmitter and the receiver close to eachother, within 20 inches (half meter).
2 Turn on the transmitter .

3 Turn on the receiver .
4 Press and hold the Link switch more than two(2)seconds. When the link is complete, the LED in thereceiver changes to solid green. When the ID cannot
be read due to the surrounding environment, try
reading it with the transmitter and receiver antennas
touched.

• When you use TM-FH RF Module , the fail safe function canbe set for 3-channel only. The throttle stick is set the positionof hope (slow) and above-mentioned Link is set.
• If there are many S-FHSS/FHSS systems tur ned onin close proximity, your receiver might not link to yourtransmitter. In this case, even if the receiver's LED stays solidgreen,unfortunately the receiver might have established alink to one of other transmitters. This is very dangerous if you
do not notice this situation. In order to avoid the problem,westrongly recommend you to doublecheck whether yourreceiver is really under control by your transmitter by giving
the stick input and then checking the servo response.

WARNING
Do not perform the linking procedure with motor's
main wire is connected or the engine is operating as it
may result in serious injury.
When the linking is done, please cycle receiver
power and check if the receiver to be linked is really
under the control by the transmitter to be linked.

Please refer the table below for LED status vsreceiver's condition.
LED Indication
GreenRed

Off

Solid

No signal reception

StatusSolid

Off

Receiving signals

Blink

Off

Receiving signals but ID is unmatched

Alternate blink

Unrecoverable error (Memory, etc.)

Compliance Information Statement(for U.S.A.)
This device, trade name Futaba Corporation, model number
R2008SB, complies with part15 of the FCC Rules. Operation issubject to the following two conditions:(1) This device may not cause harmful interference, and(2) This device must accept any interference received, includinginterference that may cause undesired operation.
The responsible party of this device compliance is:Futaba Service Center
3002 N Apollo Drive Suite 1, Champaign, IL 61822 U.S.A.
TEL (217)398-8970 or E-mail: support@futaba-rc.com (Support)

What is S.BUS?
Different from conventional radio control systems the S.BUS
system uses data communication to transmit control signals
from a receiver to a servo, gyro, or other S.BUS compatible
device. This data includes commands such as “move thechannel 3 servo to 15 degrees, move the channel 5 servo to30 degrees” to multiple devices. The S.BUS devices execute
only those commands for their own set channel. For thisreason, it can be used by connecting multiple servos to thesame signal line.

[Connection by S.BUS system]

2ch

R2008SB

S.BUS hubS.BUS output
Ch output/
Battery terminal

5ch

S.BUS hub
4ch

S.BUS
1ch

3ch

S.BUS servo

BatteryConventional
servo* Set the channel at the S.BUS servos by using an SBC-1 channel changer or a CIU-2 USB serial interface.
* Can also be used together with conventional servos. However, conventional servos cannot be used by the S.BUS output.
* When using servos with a remote battery pack, use S.BUS Hub with Cable (2-way/remote battery pack use).
Please refer to the instruction manual of S.BUS Hub with Cable (2-way/remote battery pack use) for the connection method.

WARNING
Turn on the power on transmitter → receiver in order. In addition, always check the operation of all the servos
before ﬂight.
Do not insert or remove the servo connector while the receiver power is ON.
Since the S.BUS servo switches the operation mode automatically according to the type of signal (S.BUS signal/PWM signal) from the receiver,
if the connector is inserted or removed while the power is ON, an S.BUS connected servo will be erroneously recognized and may stop.

FUTABA CORPORATION
1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba-ken, 299-4395, Japan
Phone: +81 475 32 6982, Facsimile: +81 475 32 6983
©FUTABA CORPORATION

2013, 7 (2)