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5. AC current measurement
A) Insert the black test lead into COM input jack and red one into mA/uA jack (Max 600mA),
or insert the red one into 10A input jack(Max 10A).
The initiate state of the measuring current
is DC current. Press the “Select” button to switch to AC current measurement mode.
B) Rotate function selection switch to DCA. Then connect the test leads to the tested circuit in
series, the tested current value and the current polarity of the point, where the red test lead is
contacted, will be displayed on the screen simultaneously.
Note
:
-Turn off the power of the circuit before connecting the test leads to the circuit in series.
-Select the maximum range if you don’t know the extract current range, then adjust the range
according to the measured results on the display screen. If “OL” showed, it indicates the
tested current value has exceeded the present range limit, please select higher range to
complete the measurement.
-The maximum input value is 600mA or 10A(depending on the socket where the red test lead
is contacted). For mA input, the overrated current will lead to fuse melt. For 10A input, the
measuring time should not exceed 10 seconds for each time, the overrated current will lead
to overheat or even damage the meter.
-Do not connect the test leads to other circuits in parallel after connecting the test leads to
current input sockets, it will damage the fuse and the meter.
-After measuring, turn off the power of the circuit, then disconnect test lead from circuit
under test immediately(especially for high current measurements).
-The input voltage between current input socket and COM socket, cannot be higher than 36V
DC or 25V AC.
6. Resistance (Ω) measurement
A) Insert the black test lead into COM input jack and red one into
V/Ω/Hz
input jack.
B) Rotate the range selection switch to
, press the “Select” button, choose auto resistance
measurement.
C) Cross connect the test leads to the tested resistor.
Note:
-If “OL” showed on display screen, it indicates that the tested resistor is open-circuit or the
tested value has exceeded the present range limit. When measuring the resistance is higher
than 1MΩ, the instrument will take several seconds to make the reading stable. It is normal
when measuring the high resistance.
-When measuring the low resistance, please short-circuit the test leads at first to test the wire
resistance, and then deduct it from the actual resistance to get the accurate measured value.
-When measuring in-line resistor, be sure that the power is off and all capacitors are
discharged completely.
-Do not input voltage at this range for your safety concerns even the multimeter has
overvoltage protection.
7. Capacitance(C) measurement
A) Insert the black test lead to COM input jack and red one to V/Ω/Hz
input jack
.
