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V1.0
04/03/19
Notes:
•
Before measuring resistance, switch off the power supply of the circuit, and fully discharge of capacitors.
•
If the resistance when probes are shorted is more than 0.5Ω, please check if test leads are loosened or damaged.
•
If the resistor is open or over the range, the “OL” symbol will be displayed on the screen.
•
When measuring low resistance, the test leads will produce 0.1Ω ~ 0.2Ω measurement error. To obtain accurate measure
-
ment, the measured value should subtract the value displayed when two test leads are shorted.
•
When measuring high resistance above 1MΩ, it is normal to take a few seconds to steady the readings. In order to quickly
obtain steady data, use short test wires to measure high resistance.
3. Continuity measurement (see Figure 2b)
1) Switch the dial to “ ” position.
2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the points to be
tested in parallel
3) If measured points’ resistance >51Ω, circuit is in open status.
If measured points’ resistance ≤10Ω, circuit is in good conduction status, buzzer will go off
Note:
•
Before measuring continuity, switch off all power supplies and fully discharge all capacitors.
4. Diode measurement (see Figure 2b)
1) Switch the dial to “ ” position.
2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the diode in
parallel
3) “OL” symbol appears when the diode is open or polarity is reversed. For silicon PN junction, normal value: 500 ~ 800mV
(0.5 ~ 0.8V).
Note:
•
Before measuring PN junction, switch off the power supply to the circuit, and fully discharge all capacitors
5. Capacitance measurement (only for 72-13430, see Figure 2a)
1) Switch the dial to capacitance test.
2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the capacitor in
parallel
3) When there is no input, the device displays a fixed value (intrinsic capacitance).
For small capacitance measurement, to ensure measurement accuracy, the measured value must be subtracted from
intrinsic capacitance.
Users can measure small capacity capacitors with relative measurement functions (REL) (the device will automatically
subtract the intrinsic capacitance)
Notes:
•
If the tested capacitor is shorted or its capacity is over the specified range “OL” symbol will be displayed on the screen.
•
When measuring large capacitors, it may take a few seconds to obtain steady readings
•
Before measuring capacitors (especially for high voltage capacitors), please fully discharge them.
6. DC measurement (see Figure 3)
1) Switch the dial to DC test.
2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the tested
circuit in series.
