GW Instek GDM-356 User Manual

Page 24

Measurement Operation(12)

Note
l In a circuit, a good diode should still produce a forward
voltage drop reading of 0.5V to 0.8V; however; the
reverse voltage drop reading can vary depending on
the resistance of other pathways between the probe
tips.
l Connect the test leads to the proper terminals as said
above to avoid error display. The LCD will display
“1” indicating open-circuit for wrong connection.
The unit of diode is Volt (V), displaying the positive-
connection voltage-drop value.
l When diode testing has been completed, disconnect
the connection between the testing leads and the
circuit under test.

Testing for Continuity

To test for continuity, connect the Meter as below:
1. Insert the red test lead into V

Ω

terminal and the

black test lead into the COM terminal.
2. Set the rotary switch to

3. Connect the test leads across with the object being
measured.
The buzzer sounds if the resistance of a circuit under
test is less than 70

Ω

The LCD displays the resistance value of a circuit under
test.

Note
l The LCD display “1” indicating the circuit being
tested is open.
l When continuity testing has been completed,
disconnect the connection between the testing leads
and the circuit under test.

GDM-356