Testing Diodes - UNI-T UT207 Operating Manual

Model UT207/208: OPERATING MANUAL
C. Testing Diodes (see figure 5)
Warning
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
measure the voltage drop across the junction. A
good silicon junction drops between 0.5V and 0.8V.
Red
Black
To test the diode out of a circuit, connect the Meter
as follows:
Figure 5
22