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5. Check the needle position and get the reading on the 2
scale below.
Null DCV (Central Zero) Measurement
At these two ranges， it can automatically judge the polarity of
circuit as the pointer can move to the center line and become a
Null meter.
1. Set the selector switch to the DCV ±5V or 25V range.
2. Connect the BLACK test lead to the "-COM" jack and the RED
test lead to the Red "+" jack.
3. Set the Zero Ω adjustor to place the pointer exactly to the
Central Zero position if need.
4. Connect the test leads across the circuit or load under
measurement.
5. Take the readings on the 2nd Black V.A. scale line as per the
Red/Blue ± values(-25/5， -15/3， -5/1; 0; +5/1， +15/3， +25/5).
NOTE: If the needle failed to be set at Central Zero position， the
power of 9V battery may be weak and should be replaced by
new one for normal working.
AC Voltage Measurement
WARNING: WITH EXTREME CARE WHEN MAKING
MEASUREMENTS FOR HUGE VOLTAGE. DO NOT TOUCH
TERMINAL OR PROBE ENDS.
AC Vrms:
1. Set the selector switch to the appropriate ACV range to be used
and connect the test leads across the circuit or load under
measurement. (Polarity of the test probes is unimportant on
ACV test.)
2. Connect the BLACK test lead to the "-COM" jack and the RED
test lead to the"+" jack.
3. Check the needle position and the get the reading on the 2
Black V.A scales.
7
nd
V.A
nd
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