4.10
Diode test
Warning
Risk of electric shock.
In order to avoid damage to the instrument or equipment under
test, before measuring the diode, all the power supply of
the circuit under test should be cut off and all high voltage
capacitors should be fully discharged.
Test a diode outside the circuit
1) Turn the rotary switch to the file and press the "FUNC" button to switch
to the test state.
2) Insert the black test lead into the COM jack and the red test lead into
the jack.
3) Connect the diode anode at the other end of the red test lead, and connect the diode
to the other end to test the diode cathode.
4) The meter will show the approximate value of the forward voltage drop of the diode
under test. If the polarity of the test leads is reversed, the meter will display
"OL."
In the circuit, the normal diode should produce a forward voltage drop of 0.5V
to 0.8V; however, the reverse bias reading will depend on the resistance change of
the other channels between the two test leads.
4.11 Beep off test
Warning
Risk of electric shock.
To avoid damage to the instrument or equipment under test,
disconnect all power from the circuit under test and
discharge all high voltage capacitors fully before the beep
off test.
To perform on-off test:
1) Turn the rotary switch to the file and press the "FUNC" button to switch to
