•
The screen displays ”OL” if the open circuit or resistance of the device under measurement exceeds the maximum
range of the Meter.
•
Max. Voltage applied to output terminals: about 32V; Max. current applied to output terminals: about 25mA.
•
Because the testing current output by the meter may go through all possible links between probes, the measured
resistance value in the circuit could be different from the rated value.
2.5. Continuity test
Warning
To avoid damage to the Meter or equipment under test, cut all power off and release electricity fully from all capacitor
before testing continuity.
•
Turn the rotary switch to“I”.
•
Insert black probe into “COM” terminal ,and insert red probe into “Ω_V” terminal.
•
Connect the probes to the circuit under test and the buzzer beeps when the circuit connected (resistance lower than
20Ω).
2.6. Diode test
Warning
To avoid damage to the Meter or equipment under test, cut all power off and release electricity fully from all capacitor
before testing continuity.
•
Turn the rotary switch to “D ”, press green button and select test.
•
Insert black probe into “COM” terminal ,and insert red probe into “Ω_V” terminal.
•
Connect the probes to the diode under test and then read the measured value when stable.
Forward test: connect the red probe to the positive polar of the diode under test and black probe to the negative polar, the
screen displays approximate value of diode forward voltage drop, about 0.5~0.8V generally. Adverse test: connect the
red probe to the positive polar of the diode under test and black probe to the negative polar, the screen displays ”OL” in
normal case.
2.7. Current measurement
Warning
To avoid damage to the Meter or equipment under test, make sure both the rotary switch position and input terminal
position conforms to the required measurement mode.
•
Turn the rotary switch to ”mA”
•
Insert black probe into “COM” terminal ,and insert red probe into “mA” terminal.
•
Connect the probes to the circuit under test and then read the measured value when stable.
•
Press button ”mA%” to display current value in percentage form.
