Sonel CMM-11, User Manual

Page: 52 / 100

CMM-11
– USER MANUAL
50

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
ran
ge of 1.2…5.0 V depending on the colour.

If the diode is polarized in the reverse direction, or there is a
break in the circuit, the display will show OL .

When the diode is shorted, the meter will show a value near
0 V ,

after completing the measurements, remove test leads from the
terminals of the meter.
5.8 Measurement of capacitance
WARNING:
Risk of electric shock. Disconnect the power supply from the
tested capacitor and discharge all capacitors before any
starting capacity measurements.
To perform the measurement:

set the rotary switch at
Ω
CAP
,

connect black test lead to COM terminal, and red test lead to
VΩHz%
mACAP
terminal,

press MODE button, to display nF on the screen,

contact the probe tips to the tested capacitor,

read the measurement result on the display.
5.9 Current measurement
WARNING:
To avoid the electric shock, the device must not be connect-
ed to circuits in which the measuring voltage exceeds 600 V.