37
E. Testing Diodes
Figure 3-5. Diode Test
Warning
Do not apply voltage to the test leads while the meter
is in the Diode test mode.
To avoid damages to the Meter or to the devices under
test, disconnect circuit power and discharge all the
high-voltage capacitors before testing diodes.
Use the diode test to check diodes, transistors, and
other semiconductor devices. The diode test sends a
current through the semicondutor junction, then
measures the voltage drop across the junction. A good
silicon junction drops between 0.5V and 0.8V
To test the diode out of a circuit, set up the Meter as
Figure 3-5 and proceed as follows:
Insert the red test lead into the terminal and the
black test lead into the
COM
terminal.
Set the rotary switch to
; and press
BLUE
button to select measurement mode.
1.
2.
Model 72-7730A/72-7732A: OPERATING MANUAL
Содержание 72-7730A
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