* A normal diode in the circuit will still give a forward voltage drop of 0.5V to 0.8V, but the reverse bias
reading will depend on the resistance value of the other channels between the two test knobs.
To avoid damage to the meter or device under test, all power to the circuit under test must
be turned off before measuring resistance, and all high voltage capacitors must be fully
discharged.
7.4 Buzzer Test or Continuity
For on-off state of the circuit:
1. Turn the rotary switch to position and press "FUNC-Hz" to select
2. Connect the black test pen to the “COM” input socket and the red test pen to “V-Ω” input socket.
3. Measure the resistance of the circuit under test at the other end of the test pen. If the resistance of the
circuit being tested does not exceed approximately 50 Ω, the indicator will light up and the buzzer will
sound continuously.
15
Mastering the Art of Measurement (DM501D Digital Multimeter) r.01 www.plusivo.com
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