P/N:110401104394X
6. Backlight button
7. Data-hold button
8. Insulation resistance test button
9. Functional knob
Diagram 1
V. Functions of Keys and Knobs
1. HOLD: data hold;
2. LIGHT: turn on or off the backlight source;
3. TEST: turn on or off high voltage test;
4. Test AC voltage when function knob points to ACV;
5. Test DC voltage when function knob points to DCV;
6. Test insulation resistance when the function knob points to 100V/250V/500V/1000V
(select the desired output voltage).
VI. Voltage Measurement (See Diagram 2)
To measure AC voltage, do the following:
(1) Insert the red test lead into the V input port and the black test lead into the
G input port.
(2) Place the function knob in the ACV function position to test AC voltage.
Caution
Do not input AC voltage over 750Vrms. It is possible to display a higher voltage but
it may cause damage to the instrument or electric shock.
After all the testing operations, disconnect the test leads and the circuit under test,
and remove the test leads from the instrument input jack.
In case the battery cover is opened, do not conduct any test.
VII. Insulation Resistance Measurement (See Diagram 3)
Diagram 3
Caution
a. When measuring insulation resistance, please
strictly place the two test probes separately.
Do not mix them up.
b. Neither short circuit the two test probes
under high voltage output state nor measure
insulation resistance after high voltage
outputs.
c. In case the battery cover is opened, do
not conduct any test.
2. Continuous Measurement
After function knob is set to one of test voltages 100V/250V/500V/1000V,
press the TEST key, the instrument will be self-locked to measure continuously. The
test voltage will be output and TEST button will light up. With the measurement finished,
press TEST button to unlock and stop the measurement.
Make sure the tested circuit is de-energized before measurement. Do not measure
the insulation of any energized equipment or wire.
Caution
1. Turn the function knob to select one of test voltages 100V/250V/
500V/1000V.
(1) Before testing insulation resistance, the circuit under test must be completely
discharged and completely isolated from power supply circuit.
After the measurement is completed, do not touch the circuit by your hand. The
in the circuit can cause electric shock.
Do not touch test wires when they are disconnected from tested circuit, wait until the
test voltage is completely discharged.
In case the battery cover is opened, do not conduct any test.
VIII. Battery Replacement (See Diagram 4)
Low Voltage Symbol
Battery Voltage
7V or less
Please follow these steps to replace batteries:
(1) In order to avoid the risk of electric shock, firstly turn off the power source before
replacing the battery (i.e. the function knob points at OFF) and remove the test
wires.
(2) Unscrew the screws on the cover of battery compartment and remove the battery
compartment. Replace six batteries.
(3) After the batteries are replaced, ensure to fasten the screws.
Caution
Please do not mix old and new batteries up.
Please note b
When there is need to calibrate or repair the instrument, please have it serviced by
professional personnel or designated service center.
attery's polarity when installing batteries.
Danger
In case the battery cover is opened, do
casing:
To avoid any damage to the instrument, do not submerge it into water.
not conduct any test.
Diagram 4
(2) Insert the red test wire into the LINE input port and the black test wire into
the EARTH input port.
(3) Connect the red and black alligator clip to the circuit under test. The positive voltage
is output from the LINE port.
Diagram 2
capacitance stored
IX.
*END*
