Triplett 9320-A - Manual (Page 29)

28 Triplett Model 9320-A
9.4 Diode Test
WARNING!!!
Do not apply voltage or current to the meter when it is set to
Refer to Section 7.0, Preparation For Use, and Section 8.0, General Measurement
Procedures, before attempting any measurements.
Select Diode Test by rotating the FUNCTION switch to the position and
then pressing the SELECT button until the annunciator appears in the dis-
play.
Make certain that the annunciator on the display is not visible. If it is visible,
press the D-HOLD button to turn it off.
Attach the test leads to the Tester. The red lead is connected to the V Ω Hz Jack,
and the black lead is connected to the COM Jack. With the leads open, the display
should display the Overrange OL indication. Short the leads together. The display
should indicate about “0.000” Volts.
Referring to Figure 7, connect the test probes to the diode or circuit to be tested.
Observe the proper polarity. To measure the diode’s forward voltage, the red test
lead is connected to the diode’s anode and the black test lead is connected to the
diode’s cathode (banded end). A good silicon diode or rectifier usually measures
from 0.500v to 0.700v. A shorted diode will measure about 0.000v. When a good
diode is tested in reverse, i.e. red lead to cathode and black lead to anode, it
should measure OL.
9.5 Continuity Test
WARNING!!!
Do not apply voltage or current to the meter when it is set to
Refer to Section 7.0, Preparation For Use, and Section 8.0, General Measurement
Procedures, before attempting any measurements.
Select Continuity Test by rotating the FUNCTION switch to the position and