Sonel CMP-3000, User Manual

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CMP-3000 – USER MANUAL
56
5.7 Circuit continuity test
WARNING
Do not perform measurements on the circuit under the
voltage. Before the measurement disconnect the pow-
er and discharge capacitors.
To perform the continuity test:

set the rotary switch at
Ω
,

connect black test lead to COM terminal, and red test lead to
V
Ω
Hz%CAPTemp terminal,

press MODE button, to display
Ω
on the screen,

contact the tips of test probes to the points of measurement,

read the measurement result on the display; the beep will be acti-
vated when resistance values are below approx.
50 Ω
.
5.8 Diode test
WARNING
Do not perform measurements on the circuit under the
voltage. Before the measurement disconnect the pow-
er and discharge capacitors. Do not test the diode un-
der voltage.
To perform the diode test:

set the rotary switch at
Ω
,

connect black test lead to COM terminal, and red test lead to
V
Ω
Hz%CAPTemp terminal,

press MODE button, to display and V on the screen,

contact the tips of test probes to the diode. The red test probe
should contact the anode and the black should contact cathode,

read the test result on the display
– the forward voltage is dis-
played.

For a typical silicon rectifier diode, it is approx. 0.7 V, and for
a germanium diode it is approx. 0.3 V

For LEDs with a low power, typical voltage value is in the
range of 1.2…5.0 V depending on the colour.