VICI VC837 Operation Manual

VC837 DIGTAL MULTIMETER Operation Manual

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1. General Description

This is a 3 1/2 digital multimeter with high stablility and performance. It uses a LCD with
20mm high figure, which makes the reading clearer and the operation more convenient.
It can test DCV, ACV, DCA, ACA, resistance, capacitance, frequency, NC
temperature, diode, and continuity. This meter also designed with functions including
unit symbol display, data hold, lighting, auto range, auto power off and warning
functions. To assure high accuracy and resolution, it adopts integrated circuit 8‐bit
microprocessor and a dual integral A/D conversion as LCD driver, giving high resolution
and high accurac

. It is an ideal tool for labs, factories and radio‐technology.

2. Safety Instructions

The instrument is designed in compliance with IEC1010 standard (safety standard issued

by International Electro technical Committee). Please read the followingsafety

instructions before operation.

2.1 Check the connection and insulation of test leads to avoid electric shock.

2.2 To avoid electric shock and damage to the meter, do not input voltage exceeding

rated value.

2.3 When measuring voltage higher than DC 60V or AC 40V, please be careful andavoid

electric shock.

2.4 Select correct function and range to avoid wrong operation.

2.5 Move the test leads away from test points when switching to other function.

2.6 Don’t input voltage in current terminal.

2.7 Don’t make any modification to the circuit. It may damage the meter or jeopardize

safety.

2.8 Safety symbols:

”Highvoltage,“ ”GND,“ ” Dual insulation, “ ” Refer to manual, “ ”Low

“

battery indication.

,dutycycle,

3.1.2 Max display: 6000 (3 5/6 digits, automatic polarity, and unit symbol display);

3.1.3 Measurement method: Analog to digital converter (in micro processorADC+MCU);

3.1.4 Sampling rate: approx.3 times/sec.

3.1.5 Over‐range display: “OL” displayed.

3.1.6 Low battery indicator: “

”

3.1.7 Working environment: (0～40)℃, relative humidity: <80%;

3.1.8 Store condition: (‐10～50)℃, relative humidity: <80%

3.1.9 Battery: 2 pieces 1.5V battery (“AAA” 7# battery);

3.1.10 Dimension: 140×72×37mm (length x width x height);

3.1.11 Weight: approx. 195g (including battery);

3.1.12 Accessories: test leads, TP01 thermocouple, user manual, holster,giftbox,and

2*1.5V batteries.

3.2 Technical Features

3.2.1 Accuracy: ± (a% × reading + digits). To assure accuracy, the ambient temperature
should be (23±5) ℃, relative humidity <75%. One year accuracy is guaranteed since

production date.

3.2.2 DC Voltage（DCV）

Range Accuracy Resolution

600mV

6V 1mV

60V 10mV

600V ±(1.0%+4) 100mV

±(0.5%+4)

0.1mV

Input impedance: at 200mv range >40MΩ, at other ranges is 10MΩ.

Overload protection: 600V DC/AC rms.

3. Features

3.1 General Characteristics

3.1.1 Display: LCD;

3.2.3. AC Voltage（ACV

Range Accuracy Resolution

）

6V

±(0.8%+6)

60V 10mV

1mV

60mA 10μA

600mA 100μA

600V ±(1.0%+6) 100mV

Input impedance: 10MΩ.

Overload protection: 600V DC/ AC rms.

Frequency response: at 600V range: (40~1000)Hz, at other ranges: (40~2000)Hz

Displaying: True RMS response (calibration based on sine wave RMS)

3.2.4 DC Current（DCA

Range Accuracy Resolution

600uA

6000uA 1μA

60mA 10μA

600mA 100μA

6A 1mA

10A ±(2.0%+5) 10mA

）

0.1μA

±(1.0%+5)

Maximum voltage drop: 200 mV for full range.

Maximum input current: 10A (within 10 seconds).

Overload protection: 0.5A/250V fuse and 10A/250V fuse.

6A 1mA

10A ±(2.0%+10) 10mA

Maximum voltage drop: 200 mV for full range.

Maximum input current: 10A (within 10 seconds).

Overload protection: 0.5A/250V fuse and 10A/250V fuse.

Frequency response: 10A range: 40~100Hz, other ranges: 40～400Hz.

3.2.6 Resistance（Ω）

Range Accuracy Resolution

600Ω ±(0.8%+5) 0.1Ω

6kΩ

60kΩ 10Ω

±(0.8%+1)

600kΩ 100Ω

6MΩ 1kΩ

60MΩ ±(1.2%+5) 10kΩ

1Ω

Open circuit voltage: 500mV

Overload protection: 250V DC/AC peak value.

3.2.5 AC Current (ACA)

Range Accuracy Resolution

600uA

±(1.5%+5)

6000uA 1μA

0.1μA

3.2.7 Capacitance (C)

Range Accuracy Resolution

60nF ±(2.5%+6) 10pF

600nF ±(2.5%+5) 100pF

6uF 1nF

②

60uF 10nF

600uF

6mF 1uF

±(5.0%+8)

60mF 10uF

Overload protection: 250V DC/AC peak value.

3.2.8 Frequency

Range Accuracy Resolution

100nF

‐40℃~1000℃

0F~1832℉

＜400℃ ±(1.0%+5)
≥400℃ ±(1.5%+15)
＜750℉ ±(1.0%+5)
≥750℉ ±(1.5%+15)

Thermocouple: K type.

WARNING: do not input voltage at this range!

Operation

4.1 Panel Description

①

. LCD: Display the data and unit symbol

1℃

℉

10Hz

0.01Hz

100Hz 0.1Hz

1000Hz 1Hz

10kHz 10Hz

±(0.5%+4)

100kHz 100Hz

1MHz 1kHz

10MHz 10kHz

Input sensitivity: 0.7V rms.

Overload protection: 250V DC/AC peak value.

3.2.9 Diode and Continuity Test

Measurement Range Test conditions

Forward DC current is

Diode forward voltage drop.

approx 0.8mA,
reverse voltage is

approx 2.2V.
When the resistance under test
is less than 50Ω, buzzer sounds
continuously.

Open circuit voltage:

2.2V

Overload protection: 250V DC/AC peak value.

WARNING: Do not input voltage at this range!

3.2.10 Temperature (℃/

Range Accuracy Resolution

℉

)

Number Feature Description

1△
2

3

4DC
5AC
6AUTO
7
8

9
10 MAX MIN
11

12

13

14

-

APO

FE

h

%，℃，℉

MΩ，kΩ，Ω
Hz，kHz，MHz
mV, V
uA， mA， A

Relative (REL) mode is active

Data Hold is active.

Indicates negative readings.

DC voltage or current measurement.
AC voltage or current measurement.
Auto range mode.

Null

Diode test mode.
The continuity beeper is on.

Null

Auto power off symbol.

The symbol of high voltage risk indication.

Low battery indication. Warning: To avoid error readings, which could leadto
possible electric shock or personal injury, please replace the battery in time.

Null;
Null;
Duty cycle, Degrees Celsius, Degrees Fahrenheit;
Megohm, Kilohm, Ohm;
Hertz, Kilohertz, Megahertz;
Millivolts, Volts;
Microamp, Milliamp, Amperes (A).

. Rotary switch: it is used to change the range and choose functions.