PC773
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 Input ………………………………… 003【2】APPLICATIONS AND FEATURES
2-1 Applications ……………………………………………… 004
2-2 Features …………………………………………………… 004【3】NAMES OF COMPONENT UNITS
3-1 Multimeter ………………………………………………… 005
3-2 Test Leads ………………………………………………… 005
3-3 Display ……………………………………………………… 006【4】DESCRIPTION OF FUNCTIONS
4-1 Power Switch & Function Switch ………………………… 007
4-2 Measuring Function Selection :………………… 007
4-3 Data Hold :……………………………………… 007
4-4 Backlight :……………………………………… 007
4-5 Range Hold :………………………………… 008
4-6 Relative Measurement :……………………… 008
4-7 Auto Power Off …………………………………………… 008
4-8 Battery Low Warning Indication ………………………… 009
4-9 AC Detection Method …………………………………… 009
4-10 Crest Factor ……………………………………………… 009
4-11 Connection with PC ……………………………………… 010【5】MEASURING PROCEDURE
5-1 Start-up Inspection ……………………………………… 012
5-2 DC Voltage Measurement () ……………………… 013
5-3 AC Voltage Measurement () ………………………… 014
5-4 Resistance Measurement ( ), Continuity Check ( ),Diode Test ( ) ……………………………………………… 015
5-5 Capacitance Measurement ( ) ………………………… 016
5-6 Frequency Measurement (Hz) …………………………… 017
5-7 Current Measurement (//) ………………… 018
5-8 Measurements Using Optional Products ……………… 020【6】MAINTENANCE
6-1 Maintenance and Inspection …………………………… 025
6-2 Calibration and Inspection ……………………………… 025
6-3 Storage …………………………………………………… 025
6-4 Battery and Fuse Replacement ………………………… 025【7】AFTER-SALE SERVICE
7-1 Warranty and Provision …………………………………… 027
7-2 Repair ……………………………………………………… 027
7-3 SANWA web site ………………………………………… 028【8】SPECIFICATIONS
8-1 General Specifications …………………………………… 029
8-2 Measuring Range and Accuracy ………………………… 030

[1] SAFETY PRECAUTIONS*Before use, read the following safety precautions.
This instruction manual explains how to use your digital multimeter
PC773. Before use, please read this manual thoroughly to ensure
correct and safe use. After reading it, keep it together with the
product for reference to it when necessary.
Using the product in a manner not specified in this manual may
cause damage to the protection function of the product.
The instructions given under the headings of “ WARNING” and“ CAUTION” must be followed to prevent accidental burn andelectric shock.

1-1 Explanation of Warning Symbols
The meanings of the symbols used in this manual and attached tothe product are as follows:: Very important instructions for safe use.
• The warning messages are intended to prevent accidents tooperating personnel such as burn and electric shock.
• The caution messages are intended to prevent incorrect
handling which may damage the product.
: High voltage hazard: Ground: Direct current (DC): Frequency: Alternating current (AC): Capacitor: Resistance: Fuse: Diode: Buzzer: Double insulation or reinforced insulation
1-2 Warning Messages for Safe Use
WARNING
The following instructions are intended to prevent injury such as burnand electric shock. Be sure to follow them when using the meter:
1. Never use the meter for power lines exceeding 6 kVA.
2. Voltages over 70 VDC or 33 Vrms AC (46.7 V peak) arehazardous to human body. Take care so as not to touch them.
3. Never input signals exceeding the maximum rated input value (see 1-3).
— 1 —4. Never use the meter for measuring voltages of lines connected toequipment (e.g. motors) that generates induced or surge voltage
since it may exceed the maximum allowable overload input.
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 flangeof 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 andrange 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
To avoid electric shock, always be sure to discharge the high voltage
charged in the measured device after measuring insulation
resistance.

— 2 —1-3 Overload Protection Input
The maximum rated input value and overload protection havebeen established for the input terminals of each function.
Function・・・

Input Terminal
and

and

and

Max. Rated Input Value Max. Overload Protection Input Value
DC/AC 1000 V
DC/AC 1000 V
Do not input avoltage or current.
DC/AC 1100 µA
Do not input a
315 mA/1000 V fusevoltage.
Breaking capacity:
DC/AC 110 mA
30 kA
Do not input avoltage.
DC/AC 11 A
12 A/1000 V fuse
Do not input a Breaking capacity:
voltage
30 kA

— 3 —

[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 fuse and safety cap.
• 11000-count full-scale display.
• True RMS sensing for alternating current (AC).
• Continuity confirmed by the buzzer and red LED lamp.
• Eye-friendly large size display.
• Frequency and capacitance measurement functions provided.
• Easy-to-hold design.
• Test probes can be fixed to the body.
• Double molding of elastic elastomer material.
• Maximum resistance measurement resolution 0.01 Ω.
• Maximum DC/AC voltage measurement resolution 0.01 mV.
• Software (PC Link7) and optical-link USB cable optionallyavailable for PC connection and DMM data acquisition.
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.

— 4 —[3] NAMES OF COMPONENT UNITS
3-1 Multimeter
Range hold button

USB opticalcommunication unit
connector

Relative button

Battery holder

LCD display

Data hold button(Backlight button)
Select button(Backlight button)
Continuity lamp
Power switch &function switch

measuring terminal
COM (common) terminal

11 A measuringterminal

Safety cap
measuring terminal

Stand

3-2 Test Leads
・When the removable test pin covers are mounted : CAT.III 600 V
・When the removable test pin covers are not mounted: CAT.II 1000 V

Removable test
pin covers

Test pins
Finger guards

Plugs
TL-25a— 5 —Test probe (red)Test probe (black) When notcovered3-3 Display①

Numeral data display②

Auto power off display③

Relative mode display④

Minus polarity display for numeral data⑤

AC measurement function display⑥

DC measurement function display⑦

Auto range mode display⑧

Optical data output display⑨

Testing diode display⑩

Checking continuity display⑪

Data hold display⑫

Not used with this meter⑬

Battery discharge warning display⑭

Measurement unit display— 6 —[4] DESCRIPTION OF FUNCTIONS
4-1 Power Switch & Function Switch
Turn this switch to turn on and off the power and select ameasuring function.
SELECT
4-2 Measuring Function Selection:
button is pressed, the functions change as
When thefollows:
position: Resistance measurement ( ) → continuity check( ) → diode test ( ) → resistance measurement ( )• µA position : DC current ( ) → AC current ( ) → DC current ( )• mA position : DC current ( ) → AC current ( ) → DC current ( )• A position : DC current ( ) → AC current ( ) → DC current ( )•4-3 Data Hold:
When thebutton is pressed, the value indicated will beheld. (“ ” will appear on the display.) The indicated value will notchange 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.
(“ ” will disappear from the display.)
Remarks:
The hold status is also canceled when the function is switched.
4-4 Backlight:
When theandbuttons are pressed simultaneously,
the backlight is turned on (it turns off automatically in about 1
minute).
To turn off the back light, press theandbuttons
simultaneously again.
Remarks:
andbuttons serve as the backlight
Because thefunction select buttons also, when the backlight is turned on or off, theselect and data hold functions are also activated. To select the desiredorbuttonselect or data hold setting, press theindividually.
— 7 —4-5 Range Hold:
When thebutton is pressed, the meter is set in the” disappears from themanual mode and the range is fixed. (“display.) In the manual mode, each time this button is pressed, therange changes. While checking the unit and decimal point on thedisplay, select the best range.
To return to the auto range, hold this button pressed for 1 second” appears on the display.)or longer. (“4-6 Relative Measurement:
When thebutton is pressed,
andwill light and the
input value when the button was pressed will be displayed as thereference.
To check the input value that was set as the reference value at the
button was pressed, press the button again
moment theandflickers and the reference value(for less than a second).
is displayed. Press the button again (for less than a second) toreturn to the relative measurement mode.
To cancel the relative measurement mode, hold the button pressedagain for 1 second or longer.
Example: Display after the button is pressed at DC 6.000 V input
Actual Input Value
DC 6.000 V
DC 10.00 V
DC 3.000 V

Value In Display
DC 0.000 V
DC 4.000 V
DC -3.000 V

Remarks:
The relative measurement mode is also canceled when the function isswitched.
The manual range is engaged in the relative measurement mode.
4-7 Auto Power Off
When the switches and pushbuttons of the multimeter have notbeen operated for about 30 minutes while the power is on, themultimeter turns off automatically and the display is turned off. If abutton is pressed or the function is switched while the power is on,
the Auto Power Off is extended for 30 minutes from that moment.

— 8 —To return from the Auto Power Off mode, press one of the four pushbuttons.
To cancel the Auto Power Off function, turn the function switch to aorposition other than OFF while holding the
button pressed.
“APO” on the display is turned off when the Auto Power Off function
is canceled.
Remarks:• The Auto Power Off function is defeated during the PC Link operation.
• When returning from the Auto Power Off mode, the power is turnedon while the data is held at the measurement value immediately
before the Auto Power Off mode was engaged. To resume themeasurement, cancel the data hold status.
• Even in the Auto Power Off mode, the current about 1/100 that ofordinary usage is consumed. When the meter is not going to be used
for an extended period of time, be sure to turn off the power switch.
4-8 Battery Low Warning Indication
When the built-in batteries have been discharged and the voltage
has dropped to below about 2.3 V, “ ” mark appears in the display.
When this mark flickers or lights, replace both two batteries with newones.
4-9 AC Detection Method
This meter employs the root-mean-square value method andindicates the magnitude of AC as the same amount of work as DC.
Root-mean-square values of sinusoidal waves and such nonsinusoidal waves as square waves and chopping waves can bemeasured by the true RMS (Root Mean Square) circuit.
4-10 Crest Factor
The CF (crest factor) indicates the peak value of a signal by dividing
it by its root-mean-square value. With most common waveforms
such as sinusoidal wave and chopping wave, the crest factor isrelatively low. With waveforms similar to low duty cycle pulse trains,the crest factor is high. For the voltages and crest factors for typical
waveforms, see the table below.
Please measure the crest factor by 3 or less.
— 9 —Input Waveform
Sinusoidal Vp
0
wave
Square
wave

p p

2π

Vp
0

π

Chopping Vp
0
wave

Pulse

π

Mean Average Crest
Form
0 to PEAK RootSquare Value Value
Factor Factor
Vp
Vavg Vp/Vrms Vrms/Vavg
Vrms

π

2π

2π

Vp
0

τ

2π

Vp

Vp

π
2 Vp
－
－
√2
π
2√
2
=0.707 Vp =0.637 Vp =1.414 =1.111
Vp
－

2
√

Vp

Vp

1

Vp
－

1
2
－

Vp

Vp
－
√3
2
=0.577 Vp =0.5 Vp =1.732=1.155Vp

ττ－・Vp －・Vp
2π
2π

2π
－
τ

3
√

2π
－
τ

√3

Voltages of Various Waveforms• This meter employs AC coupling for AC measurement.
The DC components in input signals are cut.
4-11 Connection with PC
The multimeter is capable of DMM data communication using theUSB interface.
When the multimeter on which the optional USB opticalcommunication unit (KB-USB773) is mounted is connected to a PC,
the multimeter will output data to the PC. It is required to purchasethe optional PC link software (PC Link7) for this operation.
For details, refer to the Help for the optional PC link software (PC
Link7).
<Connection of cable and multimeter>① Remove the light-shield rubber cap from the rear case of themultimeter.
② Connect the USB optical communication unit to the multimeter.
— 10 —

③ Connect the USB connector to a PC.
④ To disconnect the USB optical communication unit, pull it while
holding down the section inscribed with "PUSH" as shown in the
figure.
Remarks:
The Auto Power Off function is defeated during the PC Link operation.
The Auto Power Off function is also defeated if power enters thecommunication block of the multimeter. Therefore, when the USB
optical communication unit is not connected to the multimeter, be sure
to attach the light-shield rubber cap.
①②
Light-shieldrubber cap④
USB opticalcommunication
unit
Push

— 11 —

[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 is finished, remove the test pins from the object
position.
measured and return the function switch to the
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 is 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 may be discharged
completely.
— 12 —

5-2 DC Voltage Measurement (FunctionMax. Rated Input

DC 1000 V)
Range

110.00 mV, 1.1000 V, 11.000 V,
110.00 V, 1000.0 V

DCV measurement example

Remarks:
button.
• The DC 110 mV range can be selected with theSince this range is a high-input impedance, display may fluctuate orshow “OL” when the test leads are released. It is not a failure.

— 13 —

5-3 AC Voltage Measurement (FunctionMax. Rated Input

AC 1000 V)
Range

110.00 mV, 1.1000 V, 11.000 V,
110.00 V, 1000.0 V

ACV measurement example

Remarks:
button.
• The AC 110 mV range can be selected with the• The display may fluctuate or show “OL” when the test leads are
released. It is not a failure.
• The AC measurements of this multimeter are of true root-meansquare value response (AC coupling). The accuracy guarantee
range is as follows:
AC frequency bandwidth: 110 mV range 45-100 Hz
1.1 V range
45-500 Hz
11 V and over 45 Hz-1 kHz
Crest factor (CF) range: 3 max.
Range: 5 % to 100 % of each range— 14 —

5-4 Resistance Measurement ( ), Continuity Check ( )Diode Test ( )WARNING
Never apply a voltage to the measuring terminals.
5-4-1 Resistance measurement ( )FunctionMax. Rated Input

110 MΩ

Resistor

5-4-2 Continuity check ( )Range

110.00 Ω, 1.1000 kΩ, 11.000 kΩ,
110.00 kΩ, 1.1000 MΩ,
11.000 MΩ, 110.0 MΩ

Remarks:
If measurement is affected by noises, shield
the object to measure with COM potential. If
measurement is conducted with a finger
touching the test pins, an error occurs due toinfluence of resistance of the human body.
When measuring resistance in the 110 Ω range,
short the test pins and press the
button to cancel the currently displayed value
before connecting the resistance.
The open voltage between the measuringterminals is as follows.
110 Ω range: Approximately equal to thepower supply voltage.
1.1 kΩ range or higher: Approx. 0.33 V.
Remarks:• Continuity buzzer
sounds and continuity
lamp turns on when
the displayed value isless than 30 Ω.

Resistancemeasurement
Continuity check
Diode test
Selection

Continuity lamp on— 15 —

5-4-3 Diode test ( )Forwarddirection test

Resistancemeasurement
Continuity check
Diode test
Selection

Remarks:
The open voltage
between themeasuring terminals
is equal to: Powersupply voltage –Approx. 0.2 V.

CathodeReversedirection test

Anode

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

Good: OL shown
Bad: Other indication

5-5 Capacitance Measurement ( )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 may occur.
3. For capacitors having large capacitance, measurement takes a longer time.
FunctionMax. Rated Input

CAP ( )

110.00 mF
Cancelindicatedvalue prior tomeasurement

Range

11.000 nF, 110.00 nF, 1.1000 µF, 11.000 µF,
110.00 µF, 1.1000 mF, 11.000 mF, 110.00 mF
Remarks:• For capacitance measurement in the
11 nF and 110 nF ranges, press the
button to cancel the indicated value before connecting thecapacitor to be measured and thenperform the measurement.
• The indication may not become stable due
to influence of surrounding noises or stray
capacitance of the test leads.

— 16 —

5-6 Frequency Measurement ( )CAUTION
Never use the meter for measuring
frequencies to ground as the earth
leakage breaker may trip.
FunctionMax. Rated Input

Measurement prohibited

Range

110.0 Hz, 1100 Hz, 11.000 kHz,
1.1 MHz110.00 kHz, 1.1000 MHz( ≦ 1000 Vrms)• Because thefunction uses
input resistance as low as
approx. 1 kΩ, a large amount of
current flows during measurement. Never use the meter formeasuring circuits or devices
having a small current capacity.
• The measuring value is notstable in case if measured
frequency contains some noises.

Remarks:• Input sensitivity: 5 Vrms or over
• Zero cross (+ potential → – potential → + potential) frequencies
can be measured. Frequencies of + potential only or – potential
only such as logic pulses cannot be measured.
• Frequencies less than 11.1 Hz cannot be measured.

— 17 —

/

5-7 Current Measurement (/)

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
Power supply

LoadPower supply
Load

CAUTIONBe sure that the built-in fuse has not blown.
Function

DC/AC
DC/AC
DC/AC

DCA and ACA
Selection

Max. Rated Input

1100 µA
110 mA
11 A

Range

110.00 µA, 1100.0 µA
11.000 mA, 110.00 mA
11.000 A

Remarks:• In current measurement, the internal
resistance of the current range is placed
in series and the current drops by thisresistance. Accordingly, its influence
becomes larger in low-resistancecircuits.
• The AC accuracy guarantee frequency
range is from 45 Hz to 1 kHz.
— 18 —

·Power supply

Load

Functionmeasurement
Input Terminal
andBuilt-in Fuse
315 mA/1000 V Fuse
Breaking capacity 30 kA

measurement
Load

Power supply

Function

Input Terminal
andBuilt-in Fuse
12 A/1000 V Fuse
Breaking capacity 30 kA

Remarks:
If the indication changes 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 points.
— 19 —

5-8 Measurements Using Optional Products
WARNING
1. Never apply an input signal exceeding the maximum rated
input value of the optional product.
2. Do not switch the function while measuring.
5-8-1 Measurement Using a DC High-Voltage Probe (HV-60)
Max. measuring voltage: 30 kV DC
WARNING
1. This probe is for exclusive use in measurement of a verysmall-current circuit. Do not use it for measurement of large
current of a power line, etc.
2. Never apply a voltage exceeding the maximum measuring
voltage of the probe (30 kV DC).
3. Do not switch the function in the middle of measurement.
4. Do not hold the probe by the section between the guard andmeasuring pin during measurement.
1) Applications: Voltage of a high-impedance circuit, such as theanode voltage of CRT or a high voltage used for focusing.
2) Measuring range: DC 1000 V range (to be set in the manualmode).
3) Measuring procedure:① Connect the red plug of the high-voltage probe to the V input
terminal and the black plug to the COM input terminal.
② Set the function switch to “DCV” and press the RANGEHOLD button to select the 1000 V range.
③ Connect the black clip to the grounding line of the measuring
target and apply the test pin at the distal end of the probe to
the measuring point.
④ Multiply the display reading by 0.1. This is the measurement
value in the unit of kV.
⑤ After measurement, withdraw the test pin from the measuring
circuit and then remove the clips.
● The HV-60 cannot be used to measure AC voltages.
— 20 —

CRT

④
②

⑤

③
Anode

①

5-8-2 Measurement using the AC flexible clamp sensor (CL3000)
Maximum measurable current: AC 3000 A
1) Measurement target
AC sine wave of 50-60 Hz, such as the current consumption ofa home appliance or power supply equipment.
2) Measurement ranges
Three ranges of AC 30 A, AC 300 A and AC 3000 A.
3) Measurement procedure① Connect the red plug of the current probe to the + measurement terminal and the black plug to the COM (－) terminal.
② Set the function switch of this instrument (PC773) to “ACV”.
③ Set the range hold button to the 11 V range.
④ Set the range setting knob of the current probe to the 30 A,
300 A or 3000 A range.
⑤ Clamp the measurement target conductor with the current
probe.
⑥ If the range of the current probe is 30 A, read the displayed
value by multiplying it by 10. Similarly, multiply it by 100 withthe 300 A range and multiply by 1000 with the 3000 A. The
unit of the obtained value is A (ampere).
⑦ After the measurement, disconnect the current probe fromthe measurement target conductor.
⑧ Set the power switches of this instrument (PC773) and probe(CL3000) to OFF.

⑥
③
②

⑤

④

①

— 21 —

⑤
②
④
⑥

③

①

5-8-3 Measurement Using an AC/DC Clamp Probe (CL-22AD)
Max. measuring current: 200 A AC/DC
1) Applications:
ACA: Sine-wave current of 50 to 60 Hz AC, such as the current
consumption of a home appliance or a power supply.
DCA: Current of the electric circuit of an automobile or thecurrent consumption of a DC device.
2) Measuring ranges: Two ranges including 20/200 A DC and
20/200 A AC.
3) Measuring procedure:① Connect the red plug of the clamp probe to the V input
terminal and the black plug to the COM input terminal.
② To measure a DC current (DCA), set the function switch to“DCV” and press the RANGE HOLD button to select the 1.1
V range.
To measure an AC current (ACA), set the function switch to“ACV” and press the RANGE HOLD button to select the 1.1
V range.
③ Set the range knob of the clamp probe to the 20 A or 200 A
range.
* When measuring a DC current, perform the 0 (zero)adjustment of the clamp probe by turning its zero adjustmentknob.
— 22 —

④ Open the clamp jaws of the clamp probe and clamp themeasuring wire.
⑤ In the 20 A range of the clamp probe, multiply the display
reading by 100, and in the 200 A range, multiply the display
reading in 1000.
⑥ After measurement, open the clamp jaws of the clamp probe
to release it from the measuring wire.
● It is not possible to measure a current over 20 A or 200 A. (Areading is displayed but it is not accurate.)

⑤
②
④
⑥

*

③

①

5-8-4 Measurement Using a DC Clamp Probe (CL-33DC)
Max. measuring current: 300 A DC
1) Applications: Current of the electric circuit of an automobile or
the current consumption of a DC device.
2) Measuring ranges: Two ranges including 30 A and 300 A.
3) Measuring procedure:① Connect the red plug of the clamp probe to the V input
terminal and the black plug to the COM input terminal.
② Set the function switch to “DCV” and press the RANGEHOLD button to select the 1.1 V range.

— 23 —

③ Set the range switch of the clamp probe to the 30 A or 300 A
range.
* Perform the 0 (zero) adjustment of the clamp probe byturning its zero adjustment knob.
④ Open the clamp jaws of the clamp probe and clamp themeasuring wire.
⑤ Multiply the reading by 100 when the 30 A range is selectedon the clamp probe or by 1000 when the 300 A range isselected.
⑥ After measurement, open the clamp jaws of the clamp probe
to release it from the measuring target wire.
● It is not possible to measure a current over 30 A or 300 A. (Areading is displayed but it is not accurate.)
5-8-5 Measurement Using the Temperature Probe (T-300PC)
1) Applications
To measure temperature.
* Measurement cannot be performed by this probe alone.
Connect it to the meter first. Then connect the meter to a PC
that the Sanwa PC Link7 software is installed.
2) Measuring ranges
Range of -50 ˚C to 300 ˚C* Use 11 kΩ range.
3) Measurement procedure① Connect the black plug to COM measuring terminal andthe red plug to Ω measuring terminal.
② Set the function to / / and select Ω by pressing the
button.
button to hold the 11 kΩ range.
③ Press the④ Apply the sensor to an object to be measured.
⑤ Read the value in the measurement value window of thesoftware.
⑥ After measurement, release the sensor from the object
measured.

— 24 —

[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 thefunctions and performance of the product.
— 25 —

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 replacement① Remove the fixing screw of the battery holder with a screwdriver.
② Replace both two batteries in the battery holder with new ones.
(Pay attention to their polarity.)③ Set and secure the battery holder with the fixing screw as before.
Battery:
R6 x 2 pieces

6-4-2 Fuse replacement① Remove the screws of the body rear case with a screwdriver.
② Take out the fuse and replace it with a new one.
③ Secure the rear case with the screws as before.

Fuse

Fuse rating:

315 mA/1000 V (ø6.35 x 32 mm, Breaking capacity 30 kA)
12 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)— 26 —

[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 transpor tation, 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— 27 —

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— 28 —

[8] SPECIFICATIONS
8-1 General Specifications
Operation method
AC measuring method
LCD
Sampling rate

Range selection
Over-range indication
Polarity switching
Battery low warning
Environmental condition
Operatingtemperature/humidity
Storagetemperature/humidity
Power supply
Power consumption
Battery life
Auto Power Off

Fuses
Safety standards

Double integration
True RMS value method
11000 countApprox. 4 times/sec. (
/
/ /
/
/ )
Approx. 20 times/sec. ( / )Approx. 4 times/sec. ( : 11 µF or lower range)
Approx. 2 times/sec. ( : 110 µF range)
Approx. 1 time/sec. ( : 1.1 mF range)
Approx. 0.4 time/sec. = 2.5 sec./time ( : 11 mF range)
Approx. 0.08 time/sec. = 12.5 sec./time ( : 110 mF range)
Auto and manual“OL” shown on display (DCV, ACV and 11 A
excluded.)
Auto (Only “-“ is displayed.)“ ” lights or flickers when the internal battery
voltage is exhausted at approx. 2.3 V or below.
Altitude 2000 meters or below, pollution degree II
5 °C to 40 °C in the humidity range as follows. No
condensation allowed.
80 %RH (max.) at.5 °C to 31 °C, Linearly droppingfrom 80 %RH to 50 %RH at 31 °C to 40 °C.
-10 °C to +40 °C, 80 %RH max., no condensation.
40 °C to 50 °C, 70 %RH max., no condensation.
(When the multimeter will not be used for a longtime, remove the batteries before storage.)
SUM-3 (R6P) batteries, 2 pieces
Approx. 7.5 mW typ. (DCV)
Approx. 200 hours
Power OFF in about 30 minutes after lastoperation.
(The Auto Power Off function is defeated during
the PC Link operation.)
315 mA/1000 V, breaking capacity 30 kA.
12 A/1000 V, breaking capacity 30 kA
IEC61010-1, IEC61010-2-030, IEC61010-2-033
CAT. III 600 V, CAT. II 1000 V
IEC61010-031— 29 —

EMC Directive,
RoHS Directive
Dimensions
MassStandard
accessories
included
Optional products

IEC61326 (EMC), EN50581(RoHS)
166(L) x 82(W ) x 44(D) mm, projections not included.
Approx. 360 grams (batteries included)
Test leads (TL-25a), Instruction ManualUSB optical communication unit: KB-USB773
PC Link software: PC Link7
Alligator clips: CL-14, CL-13a, CL-15a, CL-DG3a,
TL-9IC
Clamp probes: CL-22AD, CL-33DC, CL3000
High-voltage probe: HV-60 Carrying case: C-77, C-77H

8-2 Measuring Range and Accuracy
Temperature: 23±5 °C, humidity: 80 %RH max. (no condensation),
supply voltage 2.4 V or above.
rdg (reading): Read value. dgt (digit): Number of counts of last
digit.
DC voltage
Range
Accuracy
Input Resistance
110.00 mV ±(0.38 % rdg + 2 dgt) ≧ Approx. 100 MΩ
1.1000 V ±(0.28 % rdg + 2 dgt) Approx. 11 MΩ
11.000 V
110.00 V ±(0.38 % rdg + 2 dgt) Approx. 10 MΩ
1000.0 V

Remarks

AC voltage
Range
Accuracy
110.00 mV ±(0.9 % rdg + 50 dgt)
1.1000 V ±(0.7 % rdg + 50 dgt)
11.000 V
110.00 V
1000.0 V±(0.9 % rdg + 50 dgt)

Input Resistance
Remarks≧ Approx. 100 MΩ • Accuracy guaranteed
Approx. 11 MΩ frequency ranges:
110 mV range 45 Hz - 100 Hz
1.1 V range 45 Hz – 500 Hz
11 V and over 45 Hz - 1 kHz
Approx. 10 MΩ Crest factor (CF) range: 3 max.
Range: 5 % to 100 % of eachrange.

— 30 —

ResistanceRange

Accuracy

110.00 Ω±(0.4 % rdg + 6 dgt)

1.1000 kΩ
11.000 kΩ±(0.3 % rdg + 6 dgt)

110.00 kΩ±(0.6 % rdg + 6 dgt)

1.1000 MΩ

±(0.8 % rdg + 6 dgt)

11.000 MΩ

±(2.0 % rdg + 6 dgt)

110.0 MΩ±(5.0 % rdg + 6 dgt)

Remarks• Open circuit voltages:
110 Ω range about power
supply voltage
1.1 kΩ and over approx.
0.33 V• The measuring current
varies depending on thevalue of resistance tomeasure.
• When measuringresistance in the 110 Ω
range, short the test pins
and press the
button to cancel thecurrently displayed value
before connecting theresistance.

Continuity check
Buzzer sound and continuity lamp ON range: Less than 30 Ω.
Diode test
Open circuit voltage: Power supply voltage – Approx. 0.2 V.
CapacitanceRange

Accuracy

11.000 nF±(4.0 % rdg + 30 dgt)

110.00 nF
1.1000 µF
11.000 µF
110.00 µF
1.1000 mF
11.000 mF
110.00 mF±(2.0 % rdg + 20 dgt)±(3.0 % rdg + 10 dgt)±(10 % rdg + 10 dgt)±(20 % rdg + 10 dgt)

— 31 —

Remarks• Accuracies in the 11 nF
and 110 nF ranges are thevalues obtained aftercanceling the indicatedvalues by the Relative
function.
• When measuring
electrostatic capacity ofcapacitor with little leakage
current such as film
capacitor.

Frequency
Range

Accuracy

110.0 Hz

1100 Hz11.000 kHz±(0.01 % rdg + 2 dgt)

110.00 kHz

1.1000 MHz

Remarks• Sensitivity: 5 Vrms orover.
• Frequency less than 11.1
Hz cannot be measured.
• Input resistance ≧Approx. 1 kΩ.
• Because the input
resistance is as low as
approx. 1 kΩ, a large
amount of current will flow
during measurement.
Never use the multimeterfor measuring circuits ordevices having a small
current capacity.
Never use the multimeterfor measuring frequencies
to ground as the earth
leakage breaker may trip.

DC current
Range
110.00 µA
1100.0 µA
11.000 mA
110.00 mA
11.000 A

Accuracy

Input Resistance±(0.5 % rdg + 4 dgt)

Approx. 1 kΩ±(0.7 % rdg + 4 dgt)

Approx. 10 Ω±(0.5 % rdg + 8 dgt)

Approx. 0.01 Ω— 32 —

Remarks• The input resistanceexcludes the fuseresistance.

AC current
Range
110.00 µA
1100.0 µA
11.000 mA
110.00 mA
11.000 A

Accuracy

Input Resistance±(0.9 % rdg + 20 dgt)

Approx. 1 kΩ±(1.1 % rdg + 20 dgt)

Approx. 10 Ω±(0.9 % rdg + 40 dgt)

Approx. 0.01 Ω

Remarks• Accuracy guaranteedfrequency ranges:
45 Hz - 1 kHz.
Crest factor (CF) range: 3max.
Range: 5 % to 100 % ofeach range• The input resistanceexcludes the fuseresistance.

* Accurate measurement may not be possible in places where astrong magnetic field is present, for example near a transformer
or large-current line, or in places where a strong electric field ispresent, for example near radio equipment.
Accuracy calculation method

Example: DC voltage measurement (DCV).
True value: 100 mV
Range accuracy: 110 mV range ... ±(0.38 % rdg + 2 dgt)
Error: ±(100.0 mV x 0.38 % + 2 dgt) = ±0.40 mV
Indicated value: 100.0 mV ±0.40 mV (in the range from 99.60
mV to 100.40 mV)

The product specifications described in this manual and its
appearance are subject to change without notice for
improvement or other reasons.

— 33 —

MEMO

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