CD771
DIGITAL MULTIMETER

INSTRUCTION MANUALTable of Contents【1】SAFETY PRECAUTIONS – Before use, read the following safety precautions.–
1-1 Explanation of Warning Symbols …………………………001
1-2 Warning Messages for Safe Use …………………………001
1-3 Overload Protection…………………………………………002【2】APPLICATIONS AND FEATURES
2-1 Applications …………………………………………………003
2-2 Features ……………………………………………………003【3】NAMES OF COMPONENT UNITS
3-1 Meter …………………………………………………………004
3-2 Test Leads …………………………………………………004
3-3 Display ………………………………………………………005【4】DESCRIPTION OF FUNCTIONS
4-1 Power Switch & Function Switch …………………………006
4-2 Measuring Function Selection ……………………………006
4-3 Data Hold ……………………………………………………006
4-4 Backlight ……………………………………………………006
4-5 Range Hold …………………………………………………007
4-6 Relative Measurement ……………………………………007
4-7 Auto Power Off ………………………………………………007
4-8 Battery Low Warning Indication……………………………007【5】MEASURING PROCEDURE
5-1 Start-up Inspection …………………………………………008
5-2 Voltage Measurement (V ) …………………………………009
5-3 Resistance Measurement ( ), Diode Test ( ),Continuity Check ( ) ………………………………………010
5-4 Frequency Measurement (Hz) ……………………………011
5-5 Capacitance Measurement ( ) …………………………012
5-6 Battery Load Voltage Measurement ( 1.5V )………………013
5-7 Current Measurement (// ) ……………………014【6】MAINTENANCE
6-1 Maintenance and Inspection ………………………………016
6-2 Calibration and Inspection …………………………………016
6-3 Storage ………………………………………………………016
6-4 Battery and Fuse Replacement ……………………………016【7】AFTER-SALE SERVICE
7-1 Warranty and Provision ……………………………………018
7-2 Repair ………………………………………………………018
7-3 SANWA web site ……………………………………………019【8】SPECIFICATIONS
8-1 General Specifications ……………………………………020
8-2 Measuring Range and Accuracy …………………………021

05. Never use the meter near equipment which generates strong
electromagnetic waves or is charged.
06. Never use the meter if the meter or test leads are damaged or broken.
07. Never use the meter with the case or battery lid removed.
08. Be sure to use the fuse of the specified rating and specification.
09. During measurement, do not hold the test pin side of the flange of the test leads.
10. To start measurement, first connect the ground side (black test lead).
When disconnecting, the ground side must be disconnected last.
11. During measurement, do not change the meter to anotherfunction or range nor replace the plugs to other terminals.
12. Before starting measurement, make sure that the function and range are properly set.
13. Never use the meter when it is wet or with wet hands.
14. Be sure to use the specified type of test leads.
15. Never attempt repair or modification, except for battery and fuse replacement.
16. Inspect the meter at least once a year.
17. This meter is for indoor use only.

CAUTION

1. Correct measurement may not be performed when using themeter in the ferromagnetic / intense electric field such asplaces near a transformer, a high-current circuit, and a radio.
2. The meter may malfunction or correct measurement may not
be performed when measuring special waveform such as thatof the inverter circuit.
1-3 Overload Protection
The maximum rated input value and overload protection havebeen established for the input terminals of each function.

／

Function

Input Terminal／

andV · Hz・Max. Rated Input Value Max. Overload Protection Input Value
DC/AC 1000 V
DC/AC 1000 V
Do not input avoltage or current.
DC 2 V

1.5V
1.5V

and

DC/AC 4000 µA 0.5 A/1000 V fuse
Do not input a voltage. Breaking capacity 30 kA
DC/AC 400 mA
Do not input a voltage.

10A and

10 A/1000 V fuse
DC/AC 10 A
Do not input a voltage. Breaking capacity 30 kA— 2 —[2] APPLICATIONS AND FEATURES
2-1 Applications
This is a digital multimeter designed for measurement in theranges of CAT. II 1000 V and CAT. III 600 V. This meter is usefulfor measuring / analyzing circuits of small communication devices,
home electric appliances and batteries within the CAT. III
environment.
2-2 Features• Safety design in compliance with the IEC61010-1. The current
terminal is protected with a safety cap.
• Continuity confirmed by the buzzer and red LED lamp.
• Eye-friendly largesized is play.
• Frequency measurement and capacitance measurement
functions provided.
• Easy-to-hold design.
• Test probes can be secured to the body.
• Double molding with outside made of elastic elastomer material.
Measurement Category (Overvoltage Category)
Overvoltage measurement classification (CAT II):Line on the primary side of equipment with power cord to beconnected to the receptacle.
Overvoltage measurement classification (CAT III):Line from the primary side or branch of equipment which directly
takes in electricity from a distribution board to the receptacle.
Overvoltage measurement classification (CAT IV):Line from the service conductor to the distribution board.

— 3 —[3] NAMES OF COMPONENT UNITS
3-1 Meter
Data hold/backlightbuttonLCD display

Select button

Range holdbuttonContinuity lamp
Relative button
Power switch &function switch
10 A measuringterminal
Safety cap

Measuringterminal

1.5V

COM (common)
terminal

measuringterminal

3-2 Test Leads— 4 —3-3 Display

Indication of numerical value.
Indication of relative mode operation.
Indication of negative sign of numerical data.
Indication of AC measuring function operation.
Indication of DC measuring function operation.
Indication of auto range mode operation.
Not used with this meter.
Indication of diode test function operation.
Indication of continuity check function operation.
Indication of data hold mode operation.
Indication of relative mode operation.
Indication of battery low warning.
Indication of units of measurement.

— 5 —[4] DESCRIPTION OF FUNCTIONS
4-1 Power Switch & Function Switch
Turn this switch to turn on and off the power and select ameasuring function.
4-2 Measuring Function Selection: SELECT
When the 00000 button is pressed, the functions change asfollows:
DC voltage (000)• V position: DC voltage (000) AC voltage (000)•000/000/000 position: Resistance measurement (000) diode test (000)continuity check (000) resistance measurement (000)• µ A position : DC current (000) AC current (000) DC current (000)• mA position : DC current (000) AC current (000) DC current (000)• A position : DC current (000) AC current (000) DC current (000)4-3 Data Hold: DATA HOLD
When the 0000000 button is pressed, the value indicated will beheld. (“XX” will appear on the display.) The indicated value will
not change if the measurement input fluctuates.
When this button is pressed again, the hold status will becanceled and the meter will return to the measurement mode.
(“XX” will disappear from the display.)
Remarks:• The DATA HOLD button does not work with the Hz function.
4-4 Backlight:
When the (XX) button is held pressed for 2 seconds or longer, thebacklight will be turned on. To turn it off, hold this button pressedfor 2 seconds or longer again.
Remarks:• Because the (XX) button serves as the XXXXXX button also, when
the backlight is turned on, the data hold mode will be set. To cancel
the data hold mode, press this button momentarily (less than 2seconds) again.

— 6 —4-5 Range Hold: RANGE HOLD
When the XXXXXXX button is pressed, the meter will be set in the
manual mode and the range will be fixed. (“XXXXXX” will disappear
from the display.) In the manual mode, each time this button ispressed, the range changes. While checking the unit and decimal
point on the display, select the best range.
To return to the auto range, hold this button pressed for 1 secondor longer. (“XXXXXX” will appear on the display.)
Remarks:• The RANGE HOLD button does not work with the (000), (00), (00)and (00) functions.
4-6 Relative Measurement:
When the XXXXXX button is pressed, XX and XX will light and the
input value when the button was pressed will become 0 as thereference. To cancel it, press the button again.
Example: Display after pressing the button at DC 30.00 V input
Actual Input Value
DC 30.00 V
DC 35.00 V
DC 25.00 V

Value in Display
DC 00.00 V
DC 05.00 V
DC – 05.00 V

Remarks:• This mode cannot be used with the Hz function. When a function otherthan (XX) is used, the range is fixed during relative measurement.
4-7 Auto Power Off
If no switch or button is operated for about 30 minutes after power on, thepower will automatically be turned off and the display will become blank.
To reset the meter, press any button or remove the object to measurefrom the DMM and set the function switch to OFF. Set the function switch
again according to the measurement and connect the object to measure.
To cancel this function, turn on the power of meter while holding
thebutton pressed.
4-8 Battery Low Warning Indication
When the built-in batteries have been discharged and the voltage has
dropped to below about 2.4 V, “XXX” mark will appear in the display.
When this mark flickers or lights, replace both two batteries with new
ones.
— 7 —

[5] MEASURING PROCEDUREWARNING
1. Do not apply an input signal exceeding the maximum rated
input of each function.
2. During measurement, do not change the function switch.
3. During measurement, do not touch the test pin side of theflange of the test lead.
4. When measurement has been finished, remove the test pins from theobject measured and return the function switch to the 000 position.
5-1 Start-up Inspection

CAUTION
1. Be sure that the battery low warning mark is not flickering or lit, whenthe meter is turned on. If it is flickering or lit, replace the batteries withnew ones.
2. Do not use the meter if the meter or test lead is damaged or broken.
3. Make sure the test leads are not cut and the fuse has not blown.

Always conduct the start-up inspection to ensure safety. (Inspection
by the continuity check.)
Inspection start
Meter ortest leads
notbroken?

Check

Broken.

Not broken.
1. Insert black plug of test lead to COM
terminal and red plug to (0000000) terminal.
2. Set 00 with function switch and select button.
3. Short red and black test pins.
appears?
Buzzersounds?

*

Does not appear.
Does not sound.
Appears.
sounds.

End of inspection.

Request for repair.

* If nothing appears on the display, the batteries might have beendischarged completely.
— 8 —5-2 Voltage Measurement (V)Function

DCV
ACVMax. Rated Input

DC 1000 V
AC 1000 V

Range

400.0 mV, 4.000 V, 40.00 V, 400.0 V, 1000 V
4.000 V, 40.00 V, 400.0 V, 1000 V
Example of DCV
measurement

Example of ACV
measurement

DCV and ACV
Selection

Remarks:
This meter’s AC detection method is the average value method. It
indicates an average value of voltage or current in the positive halfcycle. No error will occur in measurement of waveforms when the
input waveform is sinusoidal wave with no distortion. However, if the
input waveform is distorted sinusoidal wave or non-sinusoidal wave,
an error will occur.
• The indication may fluctuate when the test leads are released. It is
not a failure.
• The AC 400.0 mV range can be selected with the 00000000 button,
but the accuracy is not guaranteed.
• In the AC 4.000 V range, when the measuring terminals areshorted, 7 counts maximum may remain indicated.
• The accuracy guarantee frequency range of ACV measurement is
40 Hz to 400 Hz.
If the frequency is above 1 kHz, measurement is not possible.
• It may malfanction when measuring voltage in the inverter circuit.

— 9 —5-3 Resistance Measurement (000), Diode Test (000),
Continuity Check (000)WARNING
Never apply a voltage to the measuring terminals.

5-3-1 Resistance measurement (000)FunctionMax. Rated Input

40.00 M

Resistor

Range

400.0 , 4.000 k , 40.00 k ,400.0 k ,4.000 M , 40.00 M
Remarks:
If measurement is affected bynoises, shield the object tomeasure with COM potential. If
measurement is conducted witha finger touching the test pins, anerror will occur due to influenceof resistance of the human body.
The open voltage between themeasuring terminals is approx.
0.4 VDC.

5-3-2 Diode test (000)Forwarddirection test

Resistancemeasurement
Diode test
Continuity check
Selection

Remarks:
The open
voltage between
the measuringterminals isapprox. 1.5 VDC.

CathodeReversedirection test

Anode

Good: Forward voltage
drop shown
Bad: 0.000 V shown
OL shown— 10 —

Good: OL shown
Bad: Other indication

5-3-3 Continuity check (00)Remarks:• Continuity buzzer
sound and continuity
lanp on range: 0 ~85 (±45 )Resistancemeasurement
Diode test
Continuity check
Selection

Continuity lamp on

5-4 Frequency Measurement (000)
CAUTION
Never use the meter formeasuring frequencies to groundas the earth leakage breaker
may trip.
Function

Measurement prohibited

Range
Max. Rated Input
100.0 kHz
5.000 Hz, 50.00 Hz, 500.0 Hz, 5.000 kHz,( 1000 Vrms) 50.00 kHz, 100.0 kHz (Auto range only)
Remarks:• Because the Hz function uses
input resistance as low as approx.
2 k , a large amount of current
will flow during measurement.
Never use the meter formeasuring circuits or devices
having a small current capacity.

— 11 —

Remarks:• Input sensitivity: 3 Vrms or over– potential+ potential) frequencies• Zero cross (+ potential
can be measured. Frequencies of + potential only or – potential
only such as logic pulses cannot be measured.
• Frequencies less than 1 Hz cannot be measured.
• When the Hz function is used, the data hold and relative function
cannot be used.
5-5 Capacitance Measurement (000)WARNING
Never apply a voltage to the measuring terminals.
CAUTION
1. Remove electric charge in the capacitor prior to measurement.
2. Because this meter applies a current to the capacitor to measure,
it is not suitable for measurement of electrolytic capacitors having
a large leak current as a large error will occur.
3. For capacitors having large capacitance, measurement takes alonger time.
FunctionMax. Rated Input

CAP(000)

100.0 µF

Range
50.00 nF, 500.0 nF, 5.000 µF,
50.00 µF, 100.0 µF (Auto range)

Cancelindicatedvalue prior tomeasurement— 12 —

Remarks:• For capacitance measurement,press the RELATIVE button tocancel the indicated value(00.00 nF) before connecting acapacitor.
• Only the auto range is available forthe capacitance measuring function.
• The indication may not become
stable due to influence ofsurrounding noises or stray
capacitance of the test leads.

1.5V
5-6 Battery Load Voltage Measurement (00000)

CAUTION
1. Never apply a voltage above the battery voltage (approx. 1.5 V)
to the input terminals.
2. If measurement takes a long time, the battery being measured
will be discharged. Complete measurement quickly.
Function
1.5V

Input Terminal
1.5V and

Built-in Fuse
0.5 A/1000 V Fuse
Breaking capacity 30 kA

Remarks:• The battery load voltage measuringfunction is special for measurementof 1.5 V battery voltage.
• The measured value is the batteryisvoltage when a load of 30
connected to the battery to measure.

Measurable batteries:
Manganese battery (R20, R14, R6P)
Alkaline battery (LR20, LR14, LR6), etc.

— 13 —

5-7 Current Measurement (00000000000)//
WARNING
1. Never apply a voltage to the measuring terminals.
2. Never apply an input exceeding the maximum rated current.
3. Be sure to connect the meter in series via a load.
Correct measuring method

Wrong measuring method
Load

Power supply

Power supply
Load

CAUTIONBe sure that the built-in fuse has not blown.
Function
DC/AC µA
DC/AC mA
DC/AC A0

DCA and ACA
Selection

Max. Rated Input
4000 µA
400 mA
10 A

Range
400.0 µA, 4000 µA
40.00 mA, 400.0 mA
4.000 A, 10.00 A

Remarks:• In current measurement, the internal resistance ofthe current range is placed in series and the current
drops by this resistance. Accordingly, its influence
becomes larger in low-resistance circuits.
• The AC accuracy guarantee frequency range
is from 40 Hz to 400 Hz.
• Current range: Auto range for 400.0 µA 4000
µA, 40.00 mA 400.0 mA and 4.000 A
10.000 A. The range may be fixed by the
RANGE HOLD button.
— 14 —

µA · mA measurement
Load

Power supply

Function

Input TerminalとBuilt-in Fuse
0.5 A/1000 V Fuse
Breaking capacity 30 kA

A measurement
Load

Power supply

Function

Input Terminal
10A and

Built-in Fuse
10 A/1000 V Fuse
Breaking capacity 30 kA

Remarks:• If the indication will change little when an input signal is applied or acurrent value which is significantly smaller than the expected value
is indicated, possible causes are the input terminals, incorrect
setting of the function switch, or blown fuse. Check these places.

— 15 —

[6] MAINTENANCEWARNING
1.The following instructions are very important for safety.
Read this manual thoroughly to ensure correct maintenance.
2.Calibrate and inspect the meter at least once a year to ensure
safety and maintain its accuracy.
6-1 Maintenance and Inspection
1) Appearance: Is the meter not damaged due to falling or othercause?
2) Test leads:• Are the core wires not exposed from the test leads?
• Is the plug when inserted to the input terminal not loose?
If any of the above problems exists, stop using the meter and request for repair.
6-2 Calibration and Inspection
For more information, please contact Sanwa’s authorized agent /distribute service provider, listed in our website.
See section 7-3.
6-3 Storage

CAUTION
1. The panel and case are not resistant to volatile solvent and mustnot be cleaned with thinner or alcohol.
2. The panel and case are not resistant to heat. Do not place themeter near heat-generating devices.
3. Do not store the meter in a place where it may be subjected tovibration or where it may fall.
4. Do not store the meter in places under direct sunlight, or hot, coldor humid places or places where condensation is anticipated.
5. If the meter will not be used for a long time, remove the batteries.

6-4 Battery and Fuse Replacement
Batteries when the meter is shipped:
A battery for monitoring has been installed prior to shipment fromthe factory. It may be discharged before the expiration of thedescribed battery life.
*The battery for monitoring is a battery used to check the functions
and performance of the product.
— 16 —

WARNING
1.To avoid electric shock, do not remove the rear case with an input
being applied to the measuring terminals. Also, before starting
replacement, make sure the power of the meter is OFF.
2.Be sure to use the replacement fuse of the same rating. Neveruse a substitute for the fuse nor short the meter.
6-4-1 Battery replacement
Remove the fixing screw of the battery holder with a screwdriver.
Replace both two batteries in the battery holder with new ones.
(Pay attention to their polarity.)
Set and secure the battery holder with the fixing screw as before.
Battery:
R6 x 2 pieces

6-4-2 Fuse replacement
Remove the screws of the body rear case with a screwdriver.
Take out the fuse and replace it with a new one.
Secure the rear case with the screws as before.

Fuse

Fuse rating:

0.5 A/1000 V (ø6.35 x 32 mm, Breaking capacity 30 kA)
10 A/1000 V (ø10 x 38 mm, Breaking capacity 30 kA)* Spare fuse storage is provided at the bottom of the rear case. (For ø6.35 x 32 mm fuse only)— 17 —

[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 disposables batteries, or any productor parts, which have been subject to one of the following causes:
1. A failure due to improper handling or use that deviates from the
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— 18 —

Please contact Sanwa authorized agent / distributor / service
provider, listed in our website, in your country with above
information. An instrument sent to Sanwa / agent / distributor
without above information will be returned to the customer.
Note: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. Thisretention period is the repair warranty period. Please note,however, if such functional parts become unavailable forreasons 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— 19 —

[8] SPECIFICATIONS
8-1 General Specifications
Operation method- method
AC measuring method
Average value method
LCD
4000 counts
Sampling rate
Approx. 3 times/sec.
Range selection
Auto and Manual (Some with Manual only or Auto only)
Over-range indication“OL” shown in numerical part. (1000 V DC/AC, 10 A excluded.)Polarity indication automatic“–” indicated only when negative input.
selection
Battery low warning
Battery (0000) mark lights or flickers at approx.
2.4 V or below.
Environmental condition
Altitude 2000 m or below, pollution degree II.
Operating temperature /5 C to 40 C and humidity range as follows. No condensation allowed.
humidity
At 5 C to 31 C, 80 % RH (max). At 31 C to 40 C, linear drop from
80 % RH to 50 % RH.
Storage temperature /–10 C 40 C, 80 %RH max., no condensation
humidity
40 C 50 C, 70 %RH max., no condensation(When the meter will not be used for a long time, remove the batteries before storage.)
Power supply
SUM–3 (R6P), 2 pieces
Battery life
About 400 hours continuously at DCV. (Auto power off canceled)
Auto power off
Power off about 30 minutes after no operation.
Fuse
0.5 A/1000 V, Breaking capacity 30 kA
10 A/1000 V, Breaking capacity 30 kA
Safety standards
IEC61010-1, IEC61010-2-030, IEC61010-2-033
CAT. III 600 V, CAT. II 1000 V
IEC61010-031
EMC DiIrective, RoHS Directive IEC61326 (EMC), EN50581 (RoHS)
166(L) X 82(W) X 44(D) mm (Projections not included)
Dimensions
Approx. 360 g (batteries included)
Mass
Typical 4.5 mW (at DCV)
Power consumption
Standard accessaries included Test lead (TL-23a), Instruction manual
Optional accessaries
Alligator clip:CL-14, CL-13a, CL-15a, CL-DG3a, TL-9IC
Clamp probe: CL-22AD, CL-33DC, CL3000
High voltage probe: HV-60
Carrying case: C-77, C-77H— 20 —

8-2 Measuring Range and Accuracy
Temperature: 23±5 °C, humidity: 80 % RH max. (no condensation),
voltage 2.4 V or above.
rdg (reading): Read value, dgt (digit): Number of counts of last digit
DCV voltage
Range
400.0 mV
4.000 V
40.00 V
400.0 V
1000 V

Accuracy±(0.5 %rdg+2dgt)±(0.9 %rdg+2dgt)

ACV voltage
Range
4.000 V
40.00 V
400.0 V
1000 V

Accuracy±(1.2 %rdg+7dgt)

Input ResistanceApprox.100 M
Approx. 11 M
Approx. 10 M

Input Resistance
Remarks
Approx. 11 M
• Accuracy guarantee frequency range:
40 Hz 400 Hz (sinusoidal wave)
If the frequency is above 1 kHz,Approx. 10 M
measurement is not possible.

Resistance measurement
Range
400.0
4.000 k40.00 k400.0 k4.000 M
40.00 M

Accuracy±(1.2 %rdg+5dgt)±(2.0 %rdg+3dgt)±(3.0 %rdg+3dgt)

Remarks

Remarks• Open circuit voltage: Approx. 0.4 VDC• The measuring current varies depending
on resistance of resistors to measure.

Diode test
Open circuit voltage: Approx. 1.5 VDCContinuity check
Buzzer sound and continuity lamp on range: 0Open circuit voltage: Approx. 0.4 VDC
Battery check
Approx.. value (30 load)
Special for 1.5- V battery— 21 —~ 85(±45 )

Frequency
Range

Accuracy

5.000 Hz50.00 Hz500.0 Hz5.000 kHz±(0.3 %rdg+3dgt)

50.00 kHz
100.0 kHzCapacitanceRange
50.00 nF
500.0 nF
5.000 µF
50.00 µF
100.0 µF

DCA

Range
400.0 µA
4000 µA
40.00 mA
400.0 mA
4.000 A
10.00 A

ACA

Range
400.0 µA
4000 µA
40.00 mA
400.0 mA
4.000 A
10.00 A

Remarks• Auto range only
• The data hold and relative functions cannot be
used.
• Sensitivity: 3 Vrms or over.
• Frequency less than 1 Hz cannot be measured.
• Input resistance ≧ Approx. 2 k• Because the input resistance is as low as approx.
2 k , a large amount of current will flow during
measurement. Never use the meter for measuring
circuits or devices having a small current capacity.
Never use the meter for measuring frequencies toground as the earth leakage breaker may trip.

Accuracy±(5.0 %rdg+10dgt)

Accuracy±(1.4 %rdg+3dgt)

Remarks• Accuracy after canceling the indicatedvalue by the relative function.
• Auto range only

Input ResistanceApprox. 100
Approx. 1±(2.0 %rdg+3dgt)

Approx. 0.01

Accuracy

Input Resistance±(1.8 %rdg+5dgt)±(2.4 %rdg+5dgt)

Approx. 100
Approx. 1
Approx. 0.01

— 22 —

Remarks• The input resistanceexcludes the fuseresistance.

Remarks• Accuracy guarantee
frequency range:
40 Hz 400 Hz(sinusoidal wave)• The input resistanceexcludes the fuseresistance.

* Accurate measurement may not be possible in places near atransformer, large-current line, etc. where a strong magnetic field ispresent or near radio equipment, etc. that generates a strong
electric field.
Accuracy calculation
Example: DCV function
True value: 100 mV
Range accuracy: 400 mV range ... ±(0.5 %rdg+2dgt)
Error: ± (100.0 mV x 0.5 % + 2dgt) = ±0.7 mV
Indicated value: 100.0 mV ± 0.7 mV (in a range of 99.3
mV and 100.7 mV)
The product specifications described in this manual and its
appearance are subject to change without notice for improvement orother reasons.

— 23 —

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