Vichy VC99 3 6/7 DMM User Manual

User's manual for
VC99 3 6/7 DMM

1.SUMMARY

This digital multimeter is a steady performance,
battery-driven 3 6/7 digital multimeter. It uses the LCD
with 23mm-high figure to make the reading clear and
make operation more convenient.
The digital multimeter has the function of measuring
DCV, ACV, DCA, ACA, resistance, capacitance,
frequency, temperature, duty cycle, transistor and diode,
continuity performance test .The meter can provide
functions including analog bar and unit symbol display,
Data Holding, relative value measuring, maximal/minimal
value measuring, auto/manual
(RANGE), auto power off and warning functions .it
adopts double integral A/D converter as its core. It is an
ideal tool for labs, factories and radio-technology.
2.SAFTY NOTES：
The instrument is designed according to IEC1010
standard (safety standard issued by International
Electro technical Committee). Please read the following
before operation.
1-1.Check the connection and insulation of test leads to
avoid electric shock.
1-2.Do not input a limited voltage higher than DC 1000V
or AC 750V when measuring ranges.
1-3.When measuring voltage higher than DC 60V, AC
40V, please be careful.
1-4. Select correct function and range to avoid fault
Operation.
1-5.Please move the test leads away from test points
when switching the function.
1-6.Please don't input voltage value when measuring
current.
1-7.Please don't modify the circuit.
1-8.Introduction for safety symbol:
" " exists high voltage; "
insulation "

3. SPECIFICATION

1. General features
1-1. Displaying: LCD;
1-2.Max display: 6000(3 6/7) digits automatic polarity,
unit symbol and 61 section analog display;
range switching 1-3. Measurement
conversion;
1-4. Sampling rate: approx.3 times/sec.
1-5. Over-range display: "OL" displayed in the highest
digit.
1-6. Low battery display："
1-7. Working environment: (0～40)℃, relative humidity:
<80%;
1-8.Store environment: (-10～40)℃, relative humidity:
<80%;
1-9.Power supply：2pcs 1.5V battery（"AAA" battery） ；
1-10. Dimension: 185×93×35mm (length*width*height);
1-11. Weight: approx..290g（(including battery)；
1-12.Accessories: test leads, user manual, temperature
probe, holster, gift box, and 2*1.5V battery.
" GND "
" must refer to manual " " Low battery.
method: double integral
"

2. TECHNICAL FEATURES

2-1. Accuracy: ± (a% × reading data + digits),
environment temperature at (23±5)℃, relative humidity
<75%, One year guarantee since production date.
2-2.DC Voltage（DCV）
Range Accuracy
600mV
6V
" dual ±(0.5%+3)
60V
600V
±(0.8%+3)
1000V
Input impedance: approx. 10MΩ
Overload protection：1000V DC or 750V AC.
2-3.AC Voltage（ACV）
Range Accuracy
6V
±(0.8%+5)
60V
600V
A/D ±(1.0%+5)
750V
Input impedance: approx. 10MΩ
Overload protection：1000V DC or 750V AC.
Frequency response:（40～200）Hz under 750V ,other
range:(40～400）Hz.
Sine wave RMS(Average value response).
2-4.DC Current（DCA）
Range Accuracy
600uA
6000uA
±(1.0%+3)
60mA
600mA
6A
±(2.0%+5)
20A
MAX measurement
mA :300mV，A:100mV。
Max input current: 20A (within 15 seconds)
Over load protection: 500mA/ 250V and 13A/250V
fast molten fuse.
Resolution
0.1mV
1mV
10mV
100mV
1V
Resolution
1mV
10mV
100mV
1V
Resolution
0.1μA
1μA
10μA
100μA
1mA
10mA
drop: ： full
voltage range