23
<Forward-bias Diode Test>
Connect the black testing lead to the cathode and the red testing lead to the
anode.
Silicon diodes should give a reading of approximately 0.5V and light-emitting
diodes a reading between approximately 1.5V and 2.0V.
<Reverse-bias Diode Test>
Connect the black testing lead to the anode and the red testing lead to the
cathode.
Normally, the display shows the “ OL ” symbol, indicating that the diode
under test is normal. The diode is defective if the display gives a certain
voltage level.
Black testing
lead
Red testing
lead
Figure 1 Forward-bias
Diode Test
Red testing
lead
Black testing
lead
Figure 2 Reverse-bias
Diode Test
● Temperature Measurement (TEMP)
CAUTION
To avoid damage to instrument
Turn off the power to the circuit under test before starting measurement in
order to prevent any excessive voltage from being applied to the instrument.
To Next Page
Loading...