User guide

MEASUREMENT OPERATION
26
Warning
To avoid damage to the Meter or to the device under test, disconnect the circuit
power and discharge all high-voltage capacitors before testing for continuity.
To avoid harm to yourself, do not input voltages greater than DC 60V or AC 30V.
To test for continuity, connect the Meter as described below:
1. Insert the red test lead into the Ω terminal and the black test lead into the COM
terminal.
2. Set the rotary switch to and press BLUE button to select measurement
mode.
3. The buzzer sounds continuously if the resistor to be tested is <10Ω.
The buzzer does not sound if the resistor to be tested is >35Ω.
Note
 GDM-360/397/398: open circuit voltage is around 0.45V
GDM-461: open circuit voltage is around –3V
 When continuity testing has been completed, disconnect the connection between
the testing leads and the circuit under test, and remove the testing leads away
from the input terminals of the Meter.