MEASUREMENT OPERATION
26
Warning
To avoid possible damage to the Meter and to the device under test, disconnect
the circuit power and discharge all high-voltage capacitors before testing diodes.
To avoid harm to yourself, do not input voltages greater than DC 60V or AC 30V.
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 the
measurement mode.
3.
For forward voltage drop readings on any semiconductor component, place the
red test lead on the component’s anode and place the black test lead on the
component’s cathode. The measured value shows on the display.
Note
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.
Summary of Contents for GDM-397
Page 22: ...MEASUREMENT OPERATION 20 C Resistance Measurement see figure 4 mAuA COM V Hz figure 4...
Page 25: ...GDM 397 GDM 461 User Manual 23 D Testing for Continuity see figure 5 figure 5...
Page 27: ...GDM 397 GDM 461 User Manual 25 E Testing Diodes see figure 6 figure 6...
Page 30: ...MEASUREMENT OPERATION 28 F Capacitance Measurement see figure 7 mAuA V Hz figure 7...
Page 35: ...GDM 397 GDM 461 User Manual 33 H Temperature Measurement GDM 397 only see figure 9 figure 9...
