RD700
RD701

DIGITAL MULTIMETER

INSTRUCTION MANUALCONTENTS[1] SAFETY PRECAUTIONS*Before use, read the following safety precautions.
1-1 Explanation of Warning Symbols …………………………001
1-2 Warning Instruction for Safe Use …………………………001
1-3 Overload protections ………………………………………002[2] APPLICATION AND FEATURES……………………………003[3] NAME OF FUNCTION ………………………………………004[4] DESCRIPTION OF FUNCTIONS
4-1 Function Switch ……………………………………………005
4-2 Auto Power Off ……………………………………………005
4-3 Low Battery Indication ……………………………………005
4-4 Measurement Function Select: SELECT ………………005
4-5 Range Hold: RANGE ………………………………………006
4-6 Data Hold: HOLD …………………………………………006
4-7 Max Hold: MAX H …………………………………………006
4-8 Relative Mode: REL ……………………………………006
4-9 Mis-insertion alarm for current function: ALARM ………006
4-10 Words ………………………………………………………006[5] MEASUREMENT PROCEDURE
5-1 Start-Up Inspection …………………………………………009
5-2 Voltage measurement / Frequency measurement ……010
5-3 Adapter measurement ……………………………………012
5-4 Resistance measurement and Capacitance measurement /Testing Diode / Checking Continuity ……………………014
5-5 Temperature Measurement ………………………………018
5-6 Current Measurement ……………………………………019[6] MAINTENANCE
6-1 Maintenance and Inspection ………………………………021
6-2 Calibration …………………………………………………021
6-3 Battery and Fuse Replacement …………………………021
6-4 Storage ………………………………………………………022

[7] AFTER-SALE SERVICE
7-1 Warranty and Provision ……………………………………023
7-2 Repair ………………………………………………………023
7-3 Sanwa web site ……………………………………………024[8] SPECIFICATIONS
8-1 General Specification ………………………………………025
8-2 Measurement Range and Accuracy………………………028

[1]SAFETY PRECAUTIONS*Before use, read the following safety precautions.
This instruction manual explains how to use your new digital
multimeter RD700 or RD701 safely. Before use, please read thismanual thoroughly. After reading it, keep it together with the productfor reference to it when necessary. The instruction given under theheading of “ WARNING” must be followed to prevent accidental
burn or electrical shock.
1-1 Explanation of Warning Symbols
The meaning of the symbols used in this manual and attached tothe product is as follows.
: Very important instruction for safe use.
The warning messages are intended to prevent accidents tooperating personnel such as burn and electrical shock.
The caution messages are intended to prevent damage to the
instrument.
: Dangerous voltage (Take care not to get an electric shockin voltage measurement.): Ground (Allowable applied voltage range between the input
terminal and earth.): Direct current (DC): Alternating current (AC): Fuse: Double insulation (Protection Class )1-2 Warning Instruction for Safe Use

WARNINGTo ensure that the meter is used safely, be sure to observe theinstruction when using the instrument.
1. Never use meter on the electric circuit that exceed 6 kVA.
2. Never apply an input signal exceeding the maximum rating input
value.
3. Never use meter if the meter or test leads are damaged or broken.
4. Pay special attention when measuring the voltage of AC 33
Vrms (46.7 V peak) or DC 70 V or and over avoid injury.
— 1 —15. Never use meter for measuring the line connected withequipment (i.e. motors) that generates induced or surge
voltage since it may exceed the maximum allowable voltage.
16. Never use uncased meter.
17. Be sure to use a fuse of the specified rating or type. Never use asubstitute of the fuse or never make a short circuit of the fuse.
18. When connect and disconnecting the test leads, connecting
the ground lead (black one) first. When disconnecting them,
the ground lead must be disconnected last.
19. Always keep your fingers below the finger guards on theprobe when making measurements.
10. Be sure to disconnect the test pins from the circuit whenchanging the function.
11. Before starting measurement, make sure that the function andrange are properly set in accordance with the measurement.
12. Never use meter with wet hands or in a damp environment.
13. Do not use the device near an item of strong electromagnetic
generation or a charged item.
14. Never open tester case except when replacing batteries orfuse. Do not attempt any alteration of original specifications.
15. To ensure safety and maintain accuracy, calibrate and checkthe tester at least once a year.
16. The multimeter is restricted to indoor use only.
1-3 Overload protections
Functions
V
ADP
Ω•
•
• TEMP
HzµA•mA
A

Maximum overload
Input Maximum rating
input value
protection input
terminals
DC•AC 1000 V 1050 Vrms, 1450 Vpeak
V/ADP/Ω
DC•AC 400 mV/ / /Voltage and/TEMP
Current input
600 VDC/AC rms/Hz•prohibitedCOM
20 VAC rmsµA / mA
0.63 A/500 VFuse
DC•AC 400 mA•
IR 50 kACOM
A
12.5 A/500 VFuse
DC•AC 10 A•
IR 20 kA
COM (10 A continuous)— 2 —[2] APPLICATION AND FEATURES
2-1 Applications
This instrument is portable digital multimeter designed formeasurement of weak current circuits. It plays an important role incircuitry analysis by using additional functions as well as
measurements of small type communication equipment, electricalhome appliance, lighting voltage and batteries of various type.
2-2 Features
Fuse protects the current circuit and the terminals are misinsertion alarm.
It is the LCD that the value is able to read easily.
The function of the adapter probe is equipped.
The input impedance of the 400 mV range is 1000 M Ω.
It is possible to measure Frequency and Temperature. (K-type)
AC coupling True RMS (RD701)— 3 —[3] NAME OF FUNCTIONSLCD Display

SELECT Button

DATA Hold Button /MAX Hold Button

RANGE Hold
ButtonRELATIVE Button

Holster

POWER Switch and
FUNCTION Switch

V • H z • ADP • Ω •• • •TEMP
Measuring Terminal

A measuring TerminalµA•mA measuring
Terminal— 4 —Common Input Terminal

[4] DESCRIPTION OF FUNCTIONS
4-1 Function Switch
Turn this switch to turn on and off the power and to select thefunctions of ''V / V / Hz / ADP / Ω • • • / TEMP / µA /mA / A''.
4-2 Auto Power Off
The meter will enter a low power consumption sleep mode
automatically to extend battery life after approximately 30 minutes
of no function switch or push button operations. To wake up themeter from Auto Power Off, press any buttons momentarily orturn the function switch to the OFF position. Then turn back onagain.To disable the Auto Power Off feature, press the SELECT
button while turning the function switch on.
Note: Always turn the function switch to the OFF position whenthe meter is not in use.
4-3 Low Battery Indication
If the internal battery has been consumed and the internal battery
drops below approx. 2.6 V, Battery mark is shown in the display.
4-4 Measurement Function SelectWhen the SELECT button is pressed ( ), the functions change
as follows.
• In the case of ADP, µA, mA & A, the modes change as:.
• In the case of Ω • • • , the modes change as:ΩΩ.
• In the case of TEMP, the modes change as:
.

— 5 —

4-5 Range Hold : RANGE
Press the RANGE button momentarily to set the manual range
mode then ‘AUTO’ disappears in the display. In manual range
mode, press the button again to step through the ranges. To
return to the auto mode, press the button for 1 sec. or more then
AUTO is shown.
Note: Manual mode is not available inand Hz measurement.
4-6 Data Hold : HOLD
When the HOLD button is pressed, the display is hold (‘ H ’ isshown on the display). The display will not changed while thefunction is active. Press the button again to cancel thefunction. (‘ H ’ on the display disappears.)
4-7 Max Hold: MAX H
The max feature displays the measured maximum value as
fast as 30 ms in a single range, and with automatic up range
capability. This function is able to use it with voltage
measurement, current measurement and ADP measurement
function. Press the MAX H button for 1 sec. or more toactivate or to exit the max feature in the voltage or current
functions.
4-8 Relative Mode :REL
Relative zero allows the user to offset the meter consecutive
measurements with the displaying reading as the reference value.
Press theREL button momentarily to activate and to exit
relative zero mode.
4-9 Mis-insertion alarm for current function : ALARM
The instrument beeps to warn the user against possible damage
to the instrument due to improper connections to the µA, mA, or A
input terminals when other function (like voltage measurement
function) is selected.

— 6 —4-10 Words
AC Sensing
Average RMS: RD700
When measurement is taken by "average", no error is caused as the
input signal is shine wave with no distortion. However, if the input
waveform is distorted sine cave or non-sinusoidal wave, conversion to
root-mean-square values is very difficult, resulting in a large error.
AC coupling True RMS: RD701
When measurement is taken by true r.m.s., the measurement value of
input signal becomes the scales of the signal power and therefore
provide more effective values than those obtained by average value
detection. This multimeter imploys this true RMS circuit, which enables
measurement of sine wave and non-sinusoidal waves like square wave
and triangular wave in r.m.s.
Crest Factor
The crest factor (CF) is expressed by a value obtained by dividing thepeak value of the signal by its RMS value. Most common waveforms
such as sine wave and triangular wave have a relatively low crest
factor. The voltages and crest factors of typical waveforms are shownin the table.
Input Waveform
Sine Wave
Vp

2π

π

0

Square Wave
2ππ

Triangular Wave
Vp
0

2π

π

Puls
Vp
0

2π

Average
CF
Form Factor
Vavg Vp/Vrms Vrms/Vavg

2 Vp
Vp
――
――
2
2
π
=1.414 Vrms =0.707 Vp =0.637 Vp =1.414
Vp

Vp

Vp
Vp
――
――
3
2
=1.732 Vrms =0.577 Vp =0.5 Vp
Vrms 3

Vp
τ

RMS
Vrms

Vrms 2

Vp

Vp
0

Peak
Vp

τ
―― •Vp2π— 7 —τ―― •Vp
2π

1

π
――
22
=1.1111=1.7322――
3=1.155

2π
――
τ

2π
――
τ

3

NMRR (Normal Mode Rejection Ratio)
NMRR is the DMM's ability to reject unwanted AC noise effect,
which causes inaccurate DC measurements. NMRR is typicallyspecified in terms of dB (decibel). This series has a NMRR
specification of >60 dB at 50 and 60 Hz, which means a goodability to reject the effect of AC noise in DC measurements.
CMRR (Common Mode Rejection Ratio)
Common mode voltage is voltage present on both the COM
and VOLTAGE input terminals of a DMM, with respect toground. CMRR is the DMM's ability to reject common mode
voltage effect, which causes digit rattle or offset in voltage
measurements. This series has a CMRR specifications of >60
dB at DC to 60 Hz in ACV function; and >120 dB at DC, 50 and
60 Hz in DCV function.

— 8 —[5] MEASUREMENT PROCEDURE
5-1 Start-Up Inspection

CAUTION

1. Never use meter if the meter or test leads are damaged or
broken.
2. Make sure that the test leads are not cut or otherwise damaged.
START
Main unit
and test leads
damaged?

DamagedNo damaged
Check continuty of test
leads
Set the function to "".

Short the red and black
test pins.
The buzzer sounds?

No Stop using it and haveit repaired.

Yes
No problem.
Start measurement.

— 9 —5-2 Voltage measurement / Frequency measurement

WARNING

1. Never apply an input signal exceeding the maximum
rating input value.
2. Be sure to disconnect the test pins from the circuit whenchanging the function.
3. Always keep your fingers behind the finger guards on theprobe when making measurements.
5-2-1 Voltage measurements
DC/ACV: Maximum rating input value 1000 VDC/AC
1) Applications
DCV: Voltage of the battery and DC circuit are measured.
ACV: Sine wave AC voltage such as lighting voltage ismeasured.
2) Measuring ranges
DCV & ACV: 5 ranges from 400.0 mV to 1000 V
3) Measurement procedure
Connect the plug of black test lead to COM terminal andplug of red test lead to V terminal.
Set the function switch to ' V ' or ' V'.
Apply the red and black test pins to the circuit to measure.
For measurement of DCV, apply the black test pin to thenegative potential side of the circuit to measure and the
red test pin to the positive potential side.
For measurement of ACV, apply the red and black test
pins to the circuit to measure.
The reading of Voltage is shown in the display.
After measurement, release the red and black test pins fromthe object measured.
Note:1) AC 400.0 mV range selection is the manual operation
switching by RANGE button.
2) It may fluctuate the value when the input terminal is opened,because the input impedance of DC/AC 400.0 mV range is1000 M Ω . But this is not malfunction and there is nothindrance in measurement.
3) The accuracy is not specified from 0 to AC 10 mV (RD701:
0~AC 40 mV) when the function was set up to the ACmV
range.
4) The reading does not become 0 when the input terminal was
shorted. But this does not bring about the influence tomeasurement.

— 10 —

[DCV Measurement][ACV Measurement]
5-2-2 Frequency measurement
1) Application
Frequency of an AC circuit is measured.
2) Measuring ranges
10.00 Hz to 1.000 MHz (Auto range)
3) Measurement procedure
Connect the plug of black test lead to COM measuring input
terminal and plug of red test lead to Hz measuring terminal.
Set the function switch to 'Hz'.
Apply the red and black test pins to an object to measure.
The reading of Voltage is shown in the display.
After measurement, release the red and black test pins fromthe object measured.
Note: Operating input voltage: < 20 VAC rms.
Input Signal: Sine wave, or Square wave with duty cycle
40 %~70 %Sensitivity : 10 Hz~20 kHz: > 0.9 Vrms
20 kHz~500 kHz : > 2.6 Vp or 1.9 Vrms
500 kHz~1 MHz : > 4.2 Vp or 3 Vrms
Update Rate: 2 per second nominal— 11 —

5-3 Adapter measurement
1) Applications
This function is to measure with optional clamp probe (CL-22
AD and CL33DC), and like.
It can measure with this function, if it is the probe like thefollowing.
Current clamp probe with 1 mV (Up to 400 mV) output per 1A.
2) How to use
Connect the plug of black test lead or '-' to COM input
terminal and plug of red test lead or '+' to ADP input
terminal.
Set the function switch to 'ADP' and select either 'DC ' or
'AC ' by pressing the SELECT button.
Open the clamp part, have electric wire (one line) clamped,and close the clamp part perfectly.
The reading is shown in the display. (1mV is indicated as 10
counts.)In case of a current clamp probe with 1mV output per 1 A,
a display of '1000' counts on the display represents '100 A'.
After measurement, open the clamp part and release clamp
probe from the electric wire.
— 12 —

[Adapter (ADP) indication example]
Clamp Probe
CL-22AD
CL33DC

Range
DC 20 A*DC 200 A
AC 20 A*AC 200 A
DC 30 A*DC 300 A

Probe Output
DC 15 mV
DC 150 mV
AC 15 mV
AC 150 mV
DC 25 mV
DC 250 mV*: This range is 1 mV output per 0.1 A.

— 13 —DMM Display
DC 0150
DC 1500
AC 0150
AC 1500
DC 0250
DC 2500

Reading value
1.5 A
150 A
1.5 A
150 A
2.5 A
250 A

5-4 Resistance measurement and Capacitance measurement /Testing Diode / Checking Continuity

WARNING

Never apply voltage to the input terminals.
5-4-1 Resistance Measurement
1) Applications
Resistance of resistors and circuits are measured.
2) Measuring ranges
6 ranges from 400.0 Ω to 40.00 M Ω .
3) Measurement procedure
Connect the plug of black test lead to COM input terminaland plug of red test lead to Ω input terminal.
Set the function switch to ' Ω / / / ' and select 'Ω' bypressing the SELECT button.
Apply the red and black test pins to an object to measure.
The reading is shown in the display.
After measurement, release the red and black test pins fromthe object measured.
Note: If measurement is likely to be influenced by noise, shield
the object to measure with negative potential (COM).
If a finger touches a test pin during measurement,
measurement will be influenced by the resistance in thehuman body to result in measurement error.
Open Circuit Voltage: <0.4 VDC typical— 14 —

5-4-2 Checking Continuity
1) Application
Checking the continuity of wiring and selecting wires.
2) How to use
Connect the plug of black test lead to COM measuring input
terminal and plug of red test lead tomeasuring terminal.
Set the function switch at 'Ω / / / ' and select ' ' with
the SELECT button.
Apply the red and black test pins to a circuit or conductor tomeasure.
The continuity can be judged by whether the buzzer sounds
or not.
After measurement, release the red and black test pins fromthe object measured.
Note: Threshold: between 20 Ω and 120 Ω.
Open Circuit Voltage: <0.4 VDC typical— 15 —

5-4-3 Testing Diode
1) Application
The quality of diodes is tested.
2) How to use
Connect the plug of black test lead to COM measuring input
terminal and plug of red test lead to measuring terminal.
Set the function switch at 'Ω / / / ' and select ' ' with
the SELECT switch.
Apply the black test pins to the cathode of the diode and the
red test pin to the anode.
Check reading for judgment of good or defective.
A zero reading indicates a shorted diode (defective).
An 'OL' indicates an open diode (defective).
Apply the red test pins to the cathode of the diode and theblack test pin to the anodeThe display shows 'OL', if diode is good. Any otherreadings indicated the diode is resistive or shorted(defective).
After measurement, release the red and black test pins fromthe object measured.
Note: The input terminals release voltage is about <1.6 V.

— 16 —

5-4-4 Capacitance Measurement

CAUTION

1. Discharge the capacitance before measurement.
2. Due to the measurement method that this device pours thecurrent into a capacitor the measurement such as the big
electrolysis capacitor of a leakage current is not suited in orderthat the error becomes big.
1) Application
Measures capacitance of condensor.
2) Measuring ranges
5 ranges from 500.0 nF to 3000 µF (Auto range)
3) Measurement procedure
Connect the plug of black test lead to COM measuring input
terminal and plug of red test lead tomeasuring terminal.
Set the function switch to 'Ω / / / ' and select ' ' bypressing the SELECT button.
Apply the red and black test pins to an object to measure.
Read the value in the display.
After measurement, release the red and black test pins fromthe object measured.

— 17 —

5-5 Temperature Measurement

1) Application
The temperature of outside and water, object is measured.
2) Measuring ranges
Range from -20 to 300
Fahrenheit: Range from -4 to 572
3) Measurement procedure
Input the -plug to COM input terminal and the +plug toTemp terminal.
Set the function switch to 'Temp' and select either ' ' or ' 'by pressing the SELECT switch.
Apply the sensor of K-250PC (-50 ~250 / -58 ~482 )to an object to measure.
Read the value in the display.
After measurement, release the sensor from the object
measured.
NOTE: In the case that other optional temperature sensors areused, it connects to DMM by using optional K-typeadapter (K-AD).

K-AD— 18 —

5-6 Current Measurement

WARNING

1. Never apply voltage to the input terminals.
2. Be sure to make a series connection via load.

3. Do not apply an input exceeding the maximum rated current to
the input terminals.
4. Before starting measurement, turn OFF the power switch of thecircuit to separate the measuring part and connect the test
leads firmly.
5. The meter beeps to warn the user against possible damage to themeter due to improper connections to the µA/mA, or A input
terminals when other function (like voltage function) is selected.
DCµA, mA: Maximum rating input value 400 mADC
ACµA, mA: Maximum rating input value 400 mAAC
DCA: Maximum rating input value 10 ADC
ACA: Maximum rating input value 10 AAC
1) Applications
DCA: Current in batteries and DC circuits is measured.
ACA: Current in AC circuits is measured.
2) Measuring ranges
DC/ACµA, mA: 4 ranges for 400.0 µA/4000 µA and 40.00
mA/400.0 mA
DC/ACA: 2 ranges for 4.000 A, 10.00 A— 19 —

3) Measurement procedure
Connect the plug of black test lead to COM measuring input
terminal and plug of red test lead to µA/mA or A measuringterminal.
Set the function switch to 'µA' or 'mA' or 'A' and select either'DC ' or 'AC ' by pressing the SELECT button.
In the circuit to measure and apply the red and black test
pins in series with load.
For measurement of DCA, apply the black test pin to thenegative potential side of the circuit to measure and the
red test pin to the positive potential side in series with load.
For measurement of ACA, apply the red and black test
pins to the circuit to measure in series with load.
Apply the red and black test pins to the circuit to measure.
Read the value in the display.
After measurement, remove the red and black test pins fromthe circuit measured.
Note:10 A continuous[µA•mA Measurement]— 20 —[A Measurement]

[6] MAINTENANCEWARNING

1. This section is very important for safety. Read and understandthe following instruction fully and maintain your instrument
properly.
2. The instrument must be calibrated and inspected at least once a
year to maintain the safety and accuracy.
6-1 Maintenance and Inspection
1) Appearance
Does falling not damage the appearance?
2) Test leads
Is the cord of the test leads not damaged?
Is the core wire not exposed at any place of the test leads?
NOTE: If the built-in fuse is blown, only the current measurement
becomes impossible.
Make sure that the test leads are not cut, referring to thesection 5-1.
6-2 Calibration
The manufacturer may conduct the calibration and inspection. For
more information, please contact the manufacturer.
6-3 Battery and Fuse Replacement

WARNING

1. If the rear case or the battery lid is removed with input
applied to the input terminals, you may get electrical shock.
Before starting the work, always make sure that no input isapplied.
2. Before starting the work, be sure to turn OFF the main unit
power and release the test leads from the circuit.
3. Be sure to use a fuse of the specified rating or type. Neveruse a substitute of the fuse or never make a short circuit of
the fuse.
Factory-preinstalled built-in battery
A battery for monitoring is preinstalled before shipping,
therefore it may run down sooner than the battery life specified
in the instruction manual.
The "battery for monitoring" is a battery to inspect the functions
and specifications of the product.
— 21 —

Remove the battery lid screw with a screwdriver.
Removed the battery lid.
Take out the battery or fuse and replace it with a new one.
Attach the battery lid and fix it with the screw.

Battery lid screw

Battery lid

Rear case
Fuse 12.5 A/500 V
IR: 20 kA
ø6.3 x 32 mm

Battery (9 V)

Fuse 0.63 A/500 V
IR: 50 kA
ø6.3 x 32 mm

CAUTION

Set a battery with its polarities facing in the correct directions.
6-4 Storage

CAUTION

1. The panel and the case are not resistant to volatile solvent andmust not be cleaned with thinner or alcohol. For cleaning, use
dry, soft cloth and wipe it lightly.
2. The panel and the case are not resistant to heat. Do not place
the instrument near heat-generating devices (such as asoldering iron).
3. Do not store the instrument, in a place where it may besubjected to vibration or from where it may fall.
4. For storing the instrument, avoid hot, cold or humid places orplaces under direct sunlight or where condensation is anticipated.
Following the above instructions, store the instrument in goodenvironment. (See 8-1)
— 22 —

[7] AFTER-SALE SERVICE
7-1 Warranty and Provision
Sanwa offers comprehensive warranty services to its end-users
and to its product resellers. Under Sanwa's general warranty
policy, each instrument is warranted to be free from defects inworkmanship or material under normal use for the period of one(1) year from the date of purchase.
This warranty policy is valid within the country of purchase only,
and applied only to the product purchased from Sanwa authorized
agent or distributor.
Sanwa reserves the right to inspect all warranty claims todetermine the extent to which the warranty policy shall apply.
This warranty shall not apply to fuses, disposables batteries, or
any product or parts, which have been subject to one of thefollowing causes:
1. A failure due to improper handling or use that deviates fromthe instruction manual.
2. A failure due to inadequate repair or modification by people
other than Sanwa service personnel.
3. A failure due to causes not attributable to this product such as
fire, flood and other natural disaster.
4. Non-operation due to a discharged battery.
5. A failure or damage due to transportation, relocation or
dropping after the purchase.
7-2 Repair
Customers are asked to provide the following information whenrequesting services:
1. Customer name, address, and contact information
2. Description of problem
3. Description of product configuration
4. Model Number
5. Product Serial Number
6. Proof of Date-of-Purchase
7. Where you purchased the product— 23 —

1) Prior to requesting repair, please check the following:
Capacity of the built-in battery, polarity of installation anddiscontinuity of the test leads.
2) Repair during the warranty period:
The failed meter will be repaired in accordance with theconditions stipulated in 7-1 Warranty and Provision.
3) Repair after the warranty period has expired:
In some cases, repair and transportation cost may become
higher than the price of the product. Please contact Sanwa
authorized agent / service provider in advance.
The minimum retention period of service functional parts is 6
years after the discontinuation of manufacture. This retention
period is the repair warranty period. Please note, however, if
such functional parts become unavailable for reasons of
discontinuation of manufacture, etc., the retention period may
become shorter accordingly.
4) Precautions when sending the product to be repaired
To ensure the safety of the product during transportation,
place the product in a box that is larger than the product 5
times or more in volume and fill cushion materials fully andthen clearly mark "Repair Product Enclosed" on the box
surface. The cost of sending and returning the product shallbe borne by the customer.
7-3 SANWA web site
http://www.sanwa-meter.co.jp
E-mail: exp_sales@sanwa-meter.co.jp— 24 —

[8] SPECIFICATIONS
8-1 General Specification
Display:
4000 counts LCD (Hz: 9999 counts, : 5000 counts)
Update Sampling Rate:
3 per second nominal (Hz: 2 per second nominal)
Low Battery Indication:
Below approx. 2.6 V, '' '' mark indication
Range Selection:
Auto and Manual ranges (partially Manual range or Auto range
only)
Polarity Indication:
Automatic selection (''-'' is indicated when negative voltage is
inputted.)
Over ranging Indication:''OL'' mark indication
Over ranging Indication:''OL'' mark indication
Operating Temperature:
0 ~40 , 0~80 % R.H. ; 35 ~50 , 0~70 % R.H.
Relative Humidity:
Maximum relative humidity 80 % for temperature up to 31
decreasing linearly to 50 % relative humidity at 40
Storage Temperature:-20 ~60 , 80 % R.H. (With battery removed)
Altitude:Operating below 2000 m
Temperature Coefficient:
Nominal 0.15x (specified accuracy)/ @ (0 ~18 or
28 ~50 ), or otherwise specified
Power Supply:
9 V battery; NEDA1604, JIS006P or IEC6F22
Sensing:
Average Sensing for RD700. True RMS for RD701— 25 —

Transient protection:
6.5 kV (1.2/50 µs surge)
Pollution degree:2
Power Consumption:
3.2 mA Typical
Auto Power Off Timing:
Idle for 30 minutes
Auto Power Off Function Consumption:
300 µA typical for RD700; 360 µA typical for RD701
Dimension:
179(H ) x 87(W ) x 55(D ) mm with holster
Mass:
320 g / 460 g with holster
Accessories:
Test leads:TL-23a, K-type thermocouple: K-250PC
Holster: H-50
Instruction manual: RD700/RD701
Optional Accessories:
K-type adapter: K-AD
Clamp Probe: CL3000, CL-22AD, and CL33DC— 26 —

8-2 Measurement Range and Accuracy
Accuracy assurance range: 23±5 & less than 75 % R.H.
Function & Range
400.0 mV
4.000 VDCV
40.00 V
400.0 V
1000 V
400.0 mV
4.000 VACV 1)
40.00 V
400.0 V
1000 V
400.0 Ω4.000 kΩ40.00 kΩ
Ω400.0 kΩ
4.000 MΩ
40.00 MΩ
500.0 nF
5.000 µF
50.00 µF
500.0 µF
3000 µF
50.00 Hz500.0 Hz5.000 kHzHz
50.00 kHz
500.0 kHz
1.000 MHz
-20〜300
TEMP-4〜572

Accuracy± (0.3 %rdg + 4 dgt)

Input Impedance
Remarks
1000 MΩ NMRR:
10 MΩ ,
30 pF
nominal± (0.5 %rdg + 3 dgt)
± (1.0 %rdg + 4 dgt)
± (4.0 %rdg + 5 dgt)

1000 MΩ
10 MΩ ,
30 pF
nominal± (1.5 %rdg + 5 dgt)
± (4.0 %rdg + 5 dgt)
± (0.8 %rdg + 6 dgt)
± (0.6 %rdg + 4 dgt)

>50 dB@50/60 Hz
CMRR: >120 dB@DC,
50/60 Hz, Rs=1 kΩ
50~500 Hz
CMRR:>60 dB@DC
to 60 Hz, Rs=1 kΩ

Open Circuit Voltage:<0.4 VDC typical± (1.0 %rdg + 4 dgt)
± (2.0 %rdg + 4 dgt)

Additional 50.00 nF range
accuracy is not specified.
Accuracies with film capacitor or
better.

± (2.5 %rdg + 6dgt)2)

Operating input voltage: <20 Vrms.
Input Signal: Sine wave, or Squarewave with duty cycle 40 %~70 %Sensitivity: 10 Hz~20 kHz: > 0.9 Vrms
± (0.5 %rdg + 4 dgt) 20 kHz~500 kHz: > 2.6 Vp or 1.9 Vrms
500 kHz~1 MHz: > 4.2 Vp or 3 Vrms
Update Rate: 2 per second nominal± (2 %rdg + 3± (2 %rdg + 6))

Type-K thermocouple range &accuracy not included

1) Model RD701 True RMS accuracy of ACV, ACA & AC-ADP is
specified from 5 % (10 % for AC 400.0 mV range) to 100 % of range,or otherwise specified. Maximum Crest Factor < 1.75: 1 at full scale& < 3.5: 1 at half scale, and with frequency components within thespecified frequency bandwidth for non-sinusoidal waveforms.
2) Specified with battery voltage above 2.8 V. Accuracy decreases
gradually to 12 % at low battery warning voltage of approximately
2.6 V.
— 28 —

Function & Range
2.000 V
400.0 ΩRemarks
Test Current (Typical): 0.25 mA
Open Circuit Voltage: < 1.6 VDC
Audible threshold: Between 20 Ω and 120 Ω.
Open circuit voltage: <0.4 VDC typical.

Function & Range
400.0 µA
4000 µA
40.00 mA
DCA
400.0 mA
4.000 A
10.00 A*
400.0 µA
4000 µA
40.00 mA
ACA1)
400.0 mA
4.000 A
10.00 A*± (2.0 %rdg + 5 dgt)
± (1.2 %rdg + 3 dgt)
± (2.0 %rdg + 5 dgt)
± (1.2 %rdg + 3 dgt)
± (2.0 %rdg + 5 dgt)
± (1.2 %rdg + 3 dgt)
± (2.0 %rdg + 6 dgt)
± (1.5 %rdg + 4 dgt)
± (2.0 %rdg + 6 dgt)
± (1.7 %rdg + 4 dgt)
± (2.0 %rdg + 6 dgt)
± (1.8 %rdg + 4 dgt)

FunctionDC± (0.3 %rdg + 4 dgt)

ADP

AC 1)

Accuracy

Burden Voltage

Remarks

0.15 mV/µA
3.3 mV/mA*: 10 A continuous

0.03 V/A
0.15 mV/µA
3.3 mV/mA

50 Hz~500 Hz*: 10 A continuous

0.03 V/A

Accuracy 3)

Input Impedance
Remarks
1000 MΩ,
RD700: 50 Hz~500 Hz
30 pF± (1.5 %rdg + 5 dgt)
RD701: 50 Hz~3 kHz
nominal3) The accuracy of the sensor is not included.

Accuracy calculation
For example… Measurement 400 mVDC Range
Display value : 100.0 [mV]
Accuracy: 400.0 [mV] Range…±(0.3 %rdg + 4 dgt)
Error
: ±(100.0 [mV] 0.3 %rdg + 4 dgt) = ±0.7 [mV]
Calculation: 100.0 [mV] ± (100.0 [mV] 0.3 %rdg + 4 dgt)
True value: In a range of 099.3 [mV] ~ 100.7 [mV]
*4 [dgt] in the 400.0 [mV] range correspond to 0.4 [mV].

※Do not use the tester near places where strong electromagnetic
waves and trance are generated or strong electrical voltages are
generated.
Specifications and external appearance of the product describedabove may be revised for modification without prior notice.
— 29 —

MEMO— 36 —SANWA ELECTRIC
INSTRUMENT CO.,LTD.

Dempa Bldg,Sotokanda2-Chome
Chiyoda-Ku,Tokyo,Japan

06-1404 2040 6010