User Manual

36 GMC-I Gossen-Metrawatt GmbH
V/Hz, Ω, Temperature, and A/Hz Measurements
5.4 Diode Testing with a Constant Current of 1 mA
➭ Disconnect supply power from the electrical circuit of the
device to be measured, and discharge all high-voltage
capacitors.
➭ Make sure that the device under test is voltage-free.
Interference voltages distort measurement results!
Refer to chapter 5.1.1 regarding testing for the absence of
voltage with the help of the direct voltage measurement.
➭ Set the rotary switch to .
➭ Press the FUNC | ENTER key.
➭ Connect the device under test as shown.
Conducting Direction and Short-Circuit
The instrument displays forward voltage in volts (display: 4
places). As long as voltage drop does not exceed the maximum
display value of 5.1 V, several series connected components or
reference diodes can be tested with a small reference voltage and
reference diodes.
Reverse Direction and Interruption
The measuring instrument indicates overload 0L.
Note

Resistors and semiconductor paths connected in parallel to
the diode distort measurement results!
COM
V
Temp
Ω
Forward Direction Reverse Direction
0V !
0.654
0.L
to 5.100 V
Measuring Range:
+
–
0 . 443
V
!
000 . 8
Ω
DC
FUNC
ENTER