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5.2 Current Measurement
WARNING:
●To avoid damage to the meter, check the fuse of the meter before current measurement.
● User the proper terminals, function and range for any current measurement
● Never attempt an open circuit potential to earth is greater than 250V, do not place the test leads
in parallel with a circuit or component when the test leads are plugged into the current terminals.
1) Remove the power from the circuit under test and discharge the capacitors of the circuit, set the
rotary switch to current measuring range.
2) Insert black test lead banana plug into the negative COM jack, for current measurement less than
200mA insert the red test lead banana plug into the mA jack, for current measurement between
200mA to 10A insert the red test lead banana plug into 10A jack.
3) Break the circuit under test, connect the black test lead to the more negative side of the break,
and connect the red test lead to the more positive side of break.
4) Turn on the power of circuit under test and read the value in LCD display. If only display OL, which
means the input over range and requested to select the higher range.
5) Turn off the power of circuit under test and discharge all capacitors, remove the test leads and
recover the measured circuit.
5.3 Diode Test and Continuity Check
WARNING:
To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before
taking diode test.
1) Set the rotary switch to position
2) Insert the black test lead banana plug into the negative COM jack, insert the red test lead banana
plug into the positive VΩmA jack.
3) Place the red test lead on the anode of diode and black test lead on the cathode of diode, the
meter will show the approx. forward voltage of diode. Reverse voltage will indicate OL.
4) Touch the test probe tips to the circuit or wire you wish to check. The maximum value of resistance
under check will be showed in display. If the resistance is less than 70Ω±30Ω, the audible signal will
sound.
NOTE:
● In a circuit, a good diode should produce a forward bias reading of voltage, however, the reverse-
bias reading can be variable based on resistance of other pathways between the probe tips.
● To avoid electric shock, never measure continuity on circuits of wires that with voltage.
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