Operation Manual

GMC-I Messtechnik GmbH 31
2. DUT on test socket (new! as from firmware version 7.24)
It is imperative that you observe the specified sequence of test steps:
No device or component may initially be connected to jacks 1 through 3! (Jacks 2
and 3 are short-circuited during all measurements at the test socket;
Exception: as soon as the express command to connect the measurement cable
appears in the display, short-circuit is cancelled, see below)
õ Remove all cables that may be plugged into jacks 1 through 3.
õ Connect the DUT to the test socket.
õ Select switch position V
and then measurement U
AC/DC
.
õ Switch the DUT on (a short-circuit test is conducted).
õ Put the DUT into service by switching line voltage to the test socket
with key (14).
õ Please do not fail to observe the following:
Do not connect the measurement cables
until the following command appears in the display:
„Connect the measurement cable
to jacks 2 and 3 for voltage measurement“.
õ Scan the measuring point with the test probes.
õ Read the measured values.
õ Remove the test probes from the measuring point and pull off the
measurement cables from jacks 2 and 3.
õ Return to the Multimeter menu with ENTER.
Measurement of Safety Extra Low Voltage (see Procedure No. 2)
Line voltage can be switched to the DUT via the test socket with key
14, e.g. in order to measure protective extra low voltage at the DUT output.
Attention!
!
The voltage measured at the DUT output must be a protective
extra low voltage electrically isolated from the mains, otherwise
an overcurrent protection device in the building installation may
trip.
12.3 Resistance R
Resistance of up to 150 k can be measured between the 1 and 2 con-
nector jacks.
Select the R measurement and start.