RuoShui VR-86D User manual

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DIGITALMULTIMETER
OPERATION MANUAL
VR-86D
1、General
The instrument is a high performance, high accuracy, 3 5/6
digit multi-meter, it uses the LCD with 33mm high figure to
make the reading clear, the display simple and the operation
convenient.The instrument can measure DC and AC voltage,
DC and AC current, Resistance, Capacitance, Frequency, Duty
Circle, Transistor, Diode and Continuity test; And it also has
the features of Bar Graph, Unit Indication, Data Hold,
Relative Value Measurement (REL), USB Interface,
AUTO/MANUAL range selection, Auto Power Off and Alarm
Buzzer. The instrument adopts the directly driven 4 digits
microprocessor and dual-integral A/D converter, which
provide the high solution and high accuracy digital displaying

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driver. Because of its outstanding features, it is an excellent
tool and most suitable for lab, factory, maintenance and repair
users.
2、Open-package Inspection
Open the gift box and take out the instrument, carefully check
the following accessories. If any accessory was lost or
damaged, please contact the manufactory at once.
Digital Multimeter 1pc
Operation Manual 1pc
Test Lead 1set
Temperature Cable 1pc
USB Cable 1pc
Software disc 1pc
Transistor test accessory 1pc
3、Safety Note The instrument meets the standard of
IEC1010 (safety standard promulgated by the

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International Electrician Committee). Design and
manufacture complied with the standard of Pollution
Degree 2.
Warning
To avoid endangering the safety of the users, should
read the operation manual carefully before operation,
and strictly abide by the safety warning information and
operation description to use the instrument.
1. Caution to avoid the electric shock when measuring
the voltage higher than 30V, the current higher than
10mA, AC Power Lines with Inductive Load and the
AC Power Lines during the period of Electric Power
Fluctuation.
2. Before measuring, should check if the function knob
is set in the correct range, make sure the test lead
connects reliably, links up correctly, and insulates
properly to avoid the electric shock
3. It meets the requirements of the safety standard only
to use the instrument with the equipped test lead. If
the test lead is broken, should replace it by the same

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type and same electric specification test lead.
4. Do not replace the inside fuse by the unconfirmed
one. Only replace it by the same type and
specification fuse. Before replacement, should keep
the test lead off the tested point to make sure there is
no any signal at the input terminal.
5. Do not replace the inside battery by the unconfirmed
one. Only replace it by the same type and electric
specification battery. Before replacement, should
keep the test lead off the tested point to make sure
there is no any signal at the input terminal.
6. When measuring electricity, do not connect the body
with the ground directly, and do not touch the
possible exposed metal terminal, output socket or
lead clamp with ground potential. Usually use the
dry cloth, rubber overshoes, rubber cushion and
other insulated materials to keep the body isolated
with the ground.
7. Do not store and use the instrument in high humility,
high temperature, combustible, explosive and strong

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magnetic places.
8. It is possible to damage the instrument and endanger
the safety of the users when measuring the voltage
over the range limit. The allowed maximum voltage
is printed on the front panel of the instrument, do not
input the range limit specified to avoid the electric
shock and instrument damage
9. Do not measure any voltage when connecting the test
lead with the current terminal to avoid damaging the
instrument and endangering the safety of the users.
10. Do not try to calibrate or repair the instrument,
should operate it by the specially trained or qualified
professional people.
11. The function/range selection knob should be set in
the correct range when measuring. When switching
the function/range selection knob, keep the test lead
off the tested object to make sure there is no any
signal at the input terminal. Do not switch the
function/range selection knob when measuring.
12. When LCD displays “ ”, please replace the

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battery in time to make sure the measuring accuracy.
13. Do not allow to measure the voltage when
connecting the test lead with the current terminal!
14. Do not try to modify the inner circuit at will to avoid
damaging the instrument and endangering the safety
of the users.
4、Safety Symbol Description
Warning
DCA
High Voltage!
Dangerous!
ACA
GND
DCA & ACA
Dual
Insulation
Meets the
direction of
European
IEC
Low Battery
Fuse
5、Front Panel Description
1.Instrument Model Number
2. LCD Display
3. Funtion key :Selecting measuring function .

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3-1.HOLD: Date Hold button, press the button,the value
is held on LCD; Press the button again,exit the hold
mode and get into the normal measuring status.
Press the button for more than 3 sec. to turn on/off
the backlight.
3-2. HZ/DUTY:
Frequency/
Duty Circle
selection
button,
press the
button to
switch
between the
Frequency
and Duty
Circle mode
at Frequency Range; Press the button to switch to
Voltage or Current/Frequency/Duty Circle model at
AC Voltage or AC Current Range.


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3-3.SELECT: button switch, press the button to switch
the measuring function.
3-4. MAX/MIN: Maximum, Minimum, press the button,
the instrument gets into the MAX mode, the
measuring maximum value will be held at this mode;
Press the button again to get into the MIM mode, the
measuring minimum value will be held at this mode.
At the MAX/MIN mode, the maximum or minimum
value will be held on LCD. Under this circumstance,
there are no Bar Graph and Auto Power Off function,
hold pressing MAX/MIN button for 2 seconds, exit
the MAX/MIN mode.
3-5. RANGE: Auto Range/ Manual Range switch, the
default is set as Auto Range mode when turning on,
press the button and switch to Manual Range. At the
Manual Range mode, press the button once, the
range is switched to the higher one, press the button
again to switch the range to the lowest one when
measuring the highest range, the cycle is in proper
order from low to high. Keep pressing the button for

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2 sec., return to Auto Range mode. There is no Auto
Range mode at Frequency and Capacitance range.
3-6. REL: Relative Value Measurement, press the button
to the mode of Relative Value Measurement, press
again to cancel the Relative Value Measurement,
circulated like this. Keep pressing the button more
than 2 seconds to switch to RS232, RS232 symbol
appears on LCD, it indicates the instrument is
getting into the status of data transmission. Keeping
pressing the button more than 2 seconds, RS232
symbol disappears, the data transmission is stopped.
4. Function/range selection knob: select the measuring
function and range
5. 10A current input terminal: Measuring AC/DC 10A
positive input terminal, insert red test lead.
6. uA/mA /℃input terminal: Measuring AC/DC
uA/mA and Temperature positive input terminal.
7. COM input terminal: negative input terminal, insert
the black test lead.
8. input terminal: measure Voltage,

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Frequency/Duty Circle, Resistance, Capacitance,
Diode and Continuity positive input terminal, insert
the red test lead.
6、Other function
1.Auto power off
After stop working for 15 seconds, the instrument
will auto power off, and get into the sleeping mode.
The buzzer inside will sound 5 times one minute
before powering off, there is a long sound one minute
later and the instrument gets into the sleeping mode.
Press any key to restart the power.
2.Press “REL/RS232”button to get into the Relative
Value Measurement mode, Keep holding
“REL/RS232” button more than 2 seconds, RS232
symbol is displayed on LCD, it indicates it is the
status of the instrument connecting with PC, then
connect the instrument to PC by USB Cable,
accessory of the instrument, and then can transmit the

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measuring data to PC, it is convenient to record,
analyze, process and print the measuring results, etc.
Please refer the details to the description in the
software.
3.Data output function : Install the meter with CD , then
connect the instrument to PC by USB Cable, and then
can transmit the measuring data to PC, it is
convenient to record, analyze, process and print the
measuring results, etc.
Please refer the details to the description in the
software.
7、Property
General Feature
1-1 Display: LCD
1-2 Max Display: 5999 (3 5/6) counts automatic polarity
display and unit display.
1-3 Measuring method: dual-integral A/D converter
1-4 Sampling rage: 3 times/second

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1-5 Over range indication: display “OL”
1-6 Low battery indication: “ ”appearance
1-7 Operation environment: 0～40℃，relative humidity
<80%
1-8 Storage environment: -10～50℃，relative humidity
<80%
1-9 Power: 2pcs 1.5V batteries (AAA 7# battery)
1-10 Dimension: 192mm x 95mm x 48mm
1-11 Weight: Approx. 390g (including batteries)
Technic Property
1. Accuracy: (a% × reading + digits) at 23 ± 5℃, relative
humidity <75%.
2. One year calibration guarantee since the time
dispatched from the factory.
8、DC Voltage (DCV)
1. Turn the function/range selection knob to DCV/ACV.
Insert the red and black test lead separately to VΩHz
and COM input terminal, press “SELECT” button to

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
switch to DCV measurement mode.
2. The instrument was preset as the Auto Range mode of
DCV measurement, displays
“AUTO” symbol on LCD,
press “RANGE” button
to switch to the Manual
Range mode.
3.Connect the test lead to the
tested circuit in parallel, the
polarity of the red test lead and
the tested voltage value will be displayed on LCD
simultaneously.
注Note:
a) Do not measure the voltage higher than DC 1000V
or AC 750V.
b) When measuring the high voltage, caution to avoid
electric shock. Cut the connection between the test
lead and tested circuit at once after measurement.
C）At the Manual Range mode, if “OL” is displayed on
LCD, it indicates the tested voltage value has
exceeded the present range limit, please select the

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higher range to complete the measurement.
Range
Accuracy
Resolution
600mV
±(0.5%+4d)
0.1mV
6V
1mV
60V
10mV
600V
100mV
1000V
±(1.0%+6d)
1V
Input impedance: >60MΩ at Range 600mV, 10MΩ at
other range.
Overload protection: 1000V DC or 750V AC peak
value.
9．AC Voltage(ACV)
1. Turn the function/range selection knob to ACV/DCV,
press “SELECT” button toswitch to ACV
measurement mode. Insert the red and black test
lead separately toVΩHz and VCOM input terminal,
displayed as the following picture.
2. The instrument was preset as the Auto Range mode,
displays “AUTO” symbol on LCD, press “RANGE”
button to switch to the Manual Range mode. Press

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“Hz/DUTY” button to measure Frequency/Duty
Circle at the Auto Range or Manual ACA model.
But the frequency response is very low, at this time,
it suits to measure the circuit of high voltage and
low frequency under the circumstance of magnetic
disturbance,such as 220V-380V(50Hz-400Hz)。
3. Connect the test lead to the tested circuit in parallel,
the polarity of the red test lead and the tested voltage
value will be displayed on LCD simultaneously
Note:
a) Do not measure the voltage higher than DC 1000V or
AC 750V.
b)When measuring the high voltage, caution to avoid
electric shock. Cut the connection between the test
lead and tested circuit at once after measurement.
Range
Accuracy
Resolution
6V
±(0.8%+10d)
1mV
60V
10mV
600V
100mV
750V
±(1.0%+10d)
1V
Input impedance: 10MΩ.

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
Overload protection: 1000V DC or 750V AC peak
value.
Frequency response:
40-400Hz.
Indication:
average value
response (RMS of
sine wave).Duty
Circle indication
(0.1%-99.9%)
10、DC Current (DCA)
1. Insert the black test lead to “COM” input terminal
and the red test lead to “uAmA ”or “10A”, displayed
as the right picture. The maximum input respectively
for 600mA and 10A, if The test value is less than
4mA, set the knob to uA range.
2. Turn the function/range selection knob to current
range, press “SELECT”, switch to DC measurement

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
mode, then connect the test lead with the tested
circuit in series, the polarity
of the red test lead and
the tested current
value will be
displayed on LCD
simultaneously.
3. If “OL” is displayed
on LCD, it indicates the
test current value has exceeded the present range limit,
please select the higher range to complete the
measurement.
Note:
a) Do not measure the current higher than 10A at
Range 10A and higher than 6000uA at uA Range
and higher than 600mA at mA Range, otherwise the
fuse will be burnt out or the instrument will be
damaged.
b) Do not connect the test lead to any circuit in
parallel when the test lead is inserted in the current

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또는 일부를 이용하려면, 반드시 한국 VictorRuoshui 社의서면동의를 받아야 합니다.

input terminal, otherwise it is possible to damage
the instrument or endanger the safety of the users.
Cut the connection between the test lead and tested
circuit at once after measurement.
Range
Accuracy
Resolution
600uA
±(1.0%+10d)
0.1μA
6000uA
1μA
60mA
10μA
600mA
100μA
6A
±(1.2%+10d)
1mA
10A
10mA
Max input current: 10A (less than 15 seconds).
Overload protection: 0.6A/250V fuse,10A/250V fuse.
11、AC Current (ACA)
1. Insert the black test
lead to “COM”
input terminal
and the red test
lead to

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“uAmA ”or “10A”input terminal, displayed as the
right picture.
2. Turn the function/range selection knob to current
range, press “SELECT”, switch to AC measurement
mode, then connect the test lead to the tested circuit
in series, the polarity of the red test lead and the
tested current value will be displayed on LCD
simultaneously.
3. If “OL” is displayed on LCD, it indicates the tested
current value has exceeded the present range limit,
please select the higher range to complete the
measurement.
Note:
a) Do not measure the current higher than 10A at
Range 10A and higher than 600mA at mA
Range

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또는 일부를 이용하려면, 반드시 한국 VictorRuoshui 社의서면동의를 받아야 합니다.

b) Do not connect the test lead to any circuit in
parallel when the test lead is inserted in the current
input terminal,
otherwise it is
possible to
damage the
instrument or
endanger the
safety of the
users. Cut the
connection between the
test lead and tested circuit at once after
measurement.
Range
Accuracy
Resolution
600uA
±(1.5%+10d)
0.1μA
6000uA
1μA
60mA
10μA
600mA
100μA
6A
±(2.0%+15d)
1mA
10A
10mA
Max input current: 10A (less than 15 seconds).
Overload protection: 0.6A/250V fuse, 10A/250V fuse.