GW Instek GDM-350A - Manual (Page 22)

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between the testing leads and the circuit under test.
E. Diodes and Continuity Measurement (see figure 5)
( figure 5)
Testing Diodes
To avoid amages to the Meter or to the
devices under test, disconnect circuit
power and discharge all the high-voltage
capacitors before diodes.
Warning
Use the diode test to check diodes,
transistors, and other semiconductor
devices. The diode test sends a current
through the semiconductor junction, and
then measures the voltage drop
Model GDM-350A: OPERATING MANUAL
Measurement Operation (10)