Victor VC9801A Operation Manual

DIGITAL MULTIMETER

OPERATION MANUAL

1. GENERAL

The instrument is a stable and high performance digital multimeter driven by

battery. It uses the LCD with 42mm high make the reading is clearly. And the

function of 20sec. back light and overload protection make operation is

convenient.

The instrument has the function of measuring DCV, ACV, DCA, ACA,

resistance, capacitance, and diode, triode and continuity test. The instrument

takes dual-integral A/D converter as key point, is an excellent tools.

2. SAFETY NOTES

This series meter meets the standard of IEC1010. Read it before operation.

1．Do not input the limited voltage of 1000V DC or 750V AC RMS when

measuring voltage.

2．Voltage less than 36V is safety voltage. When measuring voltage higher than

36V DC, 25V AC, check the connection, insulation of test leads to avoid

electric shock.

3．When changing function and range, test leads should be removed from

testing point.

4．Select correct function and range.

5．When measuring current, do not input current over 20A.

6．Safety symbols

“ ” exists high voltage

，“ ”

GND

，“ ”

dual insulation

，“

”

must refer to manual

，“ ”

low battery

3. SPECIFICATION

1．GENERAL

1-1．Displaying : LCD displaying

1-2．Max. indication: 1999（3 1/2）, auto polarity indication

1-3．Measuring method: dual slope A/D transfer

1-4．Sampling rate: approx. 3 times/sec

1-5．Over range indication: MSD displays “1” or“-1”

1-6．Low battery indication: “ ” symbol displays

1-7．Operation: 0～40℃，relative humidity <80%

1-8．Power：one 9V battery (NEDA1604/6F22 or equivalent)

1-9．Meas.:190×93.5×37 mm

1-10．Weight: approx. 426g（including battery

）

1-11. Accessories: test leads, instruction manual, holster, gift box and battery

1-12. Test accessories: alligator, triode test accessory

2．TECHNICAL DATA

2-1．Accuracy: ±（RDG% + the lowest digit） at (23±5) ,<75%RH one year℃

guarantee from production date

2-2．TECHNICAL DATA

2-2-1.DCV

RANGE ACCURACY RESOLUTION

200mV ±(0.5%+3) 100uV

2V 1mV

20V 10mV

200V 100mV

1000V ±(0.8%+10) 1V

Input resistance：all ranges: 10MΩ

Overload protection: 200mV range: 250V DC or AC peak value, other range:

1000V DC or AC peak value

2-2-2.ACV

RANGE

ACCURACY

RESOLU7TION

2V ±(0.8%+5) 1mV

20V 10mV

200V 100mV

750V ±(1.2%+10) 1V

Input resistance: 10MΩ Max

Overload protection: 1000V DC or AC peak value

Frequency response: lower than 200V range: 40~400Hz，750V range:

40~200Hz

Displaying: RMS of sine wave( mean value response)

2-2-3. DCA

RANGE ACCURACY RESOL.UTION

20uA ±(0.8%+10) 0.01uA

200uA 0.1uA

2mA 1uA

20mA 10uA

200mA ±(1.2%+8) 100uA

2A ±(1.5%+5) 1mA

20A ±(2.0%+5) 10mA

Max. measuring voltage drop: 200mV

；

Max. input current: 20A（within 10 sec.

）

Overload protection: 2A / 250V fast melt fuse, 20A infused

2-2-4. ACA

RANGE ACCURACY RESOLUTION

20mA ±(1.0%+5) 10uA

200mA ±(2.0%+5) 100uA

2A ±(3.0%+5) 1mA

20A ±(3.0%+10) 10mA

Max. measuring voltage drop:200mV

Max. input current: 20A （less than 10sec.

）

Overload protection: 2A / 250V fast melt fused, 20A range infused

Frequency response: 40~200Hz

；

Displaying: rms of sine wave(mean value response

）

2-2-5. RESISTANCE（Ω

）

RANGE ACCURACY RESOLUTION

200Ω ±(0.8%+5) 0.1Ω

2kΩ ±(0.8%+3) 1Ω

20kΩ 10Ω

200kΩ 100Ω

2MΩ 1kΩ

200MΩ ±[5%(rdg –10 )+ 30] 100kΩ

Open voltage: less than 3V

Overload protection: 250V DC or AC peak value

NOTE: a：At 200Ω range, it should make the test leads short to measure the

wire resistance, then, subtracts from the real measurement.

b：At 200 MΩ range, make the test leads short, LCD displays 1.0MΩ, it’s

normal and has no effect on the accuracy and should be subtracted from

real measurement.

2-2-6. CAPACITANCE

RANGE ACCURACY RESOLUTION

200uF ±(5.0%+10) 100nF

Overload protection: 36V DC or AC peak value

2-2-7. DIODE AND CONTINUITY TEST

RANGE DISPLAYING VALUE TEST CONDITION

Forward voltage drop

of diode

Forward DCA is approx.

1mA，backward voltage is

approx. 3V

If the resistance

is less than 70Ω±20Ω,

buzzer sounds

Open voltage is approx. 3V

Overload protection: 250V DC or AC peak value.

Warning: do not input voltage at this range!

2-2-8. TRANSISTOR h

FE DATA TEST

RANGE DISPLAYING RANGE TESTING CONDITION

hFE NPN or PNP

0 ~ 1000

Basic current is approx.

10uA

，

Vce is

approx. 3V

2-2-9. Live wire identifying

RANGE DISPLAYING ALARM TEST

CONDITION

TEST 000 or 1 Sound, light AC standard live

wire verify

Overload protection: 500V DC or AC peak value.

Warning: for your safety, please operate according to the safety rule.

4. OPERATION

4-1．PANEL DESCRIPTION

1．LCD: display the measuring value and unit.

2-1．POWER switch: turn on/off the power.

2-2．B/L key: turn on/off back light, will be auto off after 2 sec.

2-3: Transistor test jack.

2-4．HOLD key: press it, the present value is held on LCD and “ HOLD ”

symbol displays. Press it again, “ HOLD ” symbol disappears, and the meter

exists the hold mode.

2-5．Live wire verify light

3．Range knob: to select measuring function and range.

4．VOLTAGE, RESISTANCE AND FREQUENCY COM

5．GND, ANODE SOCKET OF TEST ACCESSORY

6．LESS THAN 200mA CURRENT COM, CATHODE SOCKET OF TEST

ACCESSORY

7．20A CURRENT COM

SEE THE FIG:

4-2．DCV MEASUREMENT

1．Apply the black test lead to “COM” terminal and the red one to V/Ω/Hz

terminal.

2．Set the knob to a

proper DCV range, connect the black test lead crossly to the circuit under

tested, the voltage and polarity of the point which the red lead connect to

will display on LCD.

NOTE:

1

．

If the voltage range is unknown beforehand, set the knob to the highest

range, then, select a proper range according to the displaying value.

2．There is a remained value at small voltage range before measuring, it is

normal and have no effect on measurement. If MSD displays “1”, it means

over range, should set the knob to a higher range.

3．Do not input a voltage over 1000V, or, the circuit might be damaged.

4．Be careful when measuring high voltage circuit.

4-3．ACV MEASUREMENT

1．Apply the black test lead to “COM” terminal and the red one to V/Ω/Hz

terminal.

2．Set the knob to proper ACV range, connect the test leads crossly to the

circuit under tested.

NOTE:

1

．

If the voltage under tested is unknown beforehand, set the knob to the

highest range, then, select a proper range according to the displaying value.

2

．

There is a remained value at small voltage range before measuring, it is

normal and have no effect on measurement. If MSD displays “1” , it means

over range, should set the knob to a higher range.

3．Do not input voltage over 750Vrms，or, the circuit might be damaged.

4．Be careful when measuring high volt circuit.

4-4．DCA MEASUREMENT