User Manual

26 GMC-I Messtechnik GmbH
Test Sequence for Direct Measuring Method
➭ Set the rotary switch to the I
PE
position.
➭ Select the Direct measurement type:
– By setting the parameters
or
– Directly by pressing the key shown at the right
➭ Connect the DUT’s mains plug (protection class I) to the test
instrument’s test socket (see figure 1/4).
➭ Make sure that the device under test is switched off.
➭ Start the test: press the START/STOP key.
➭ Switch the device under test on.
➭ The measurement must be performed with mains plug
polarity in both directions by pressing the NL/LN key.
➭ Acknowledge the warning which indicates that line
voltage will be connected to the test socket.
➭ Switch the device under test on.
➭ Contact all accessible conductive parts, one after the other,
with test probe P1, which are not connected to the housing,
as well as any output sockets for safety extra-low voltage if in-
cluded.
➭ The measured values are displayed. The measured
value recording symbol shown at the right appears.
Each time this key is pressed, the currently displayed
measured value is saved to the buffer.
➭ Turn off the device under test.
➭ Stop the test: press the START/STOP key.
The save symbol appears (floppy disk showing the
number of measured values stored to buffer memory)
and prompts you to save the measured values to an ID
number.
➭ Read the measured values and compare them with the
table of permissible limit values.
➭ Press the ESC key in order to discard the measured
values stored to buffer memory and acknowledge by
pressing the key shown at the right.
Test Sequence with Differential Current Method
➭ Set the rotary switch to the I
PE
position.
➭ Select the Differential measurement type:
– By setting the parameters
or
– Directly by pressing the key shown to the right
➭ Connect the DUT’s mains plug (protection class I) to the test
instrument’s test socket (see figures 2/4 and 3/4).
➭ Start the test: press the START/STOP key.
➭ The measurement must be performed with mains plug
polarity in both directions by pressing the NL/LN key.
➭ Acknowledge the warning which indicates that line
voltage will be connected to the test socket.
➭ Switch the device under test on.
➭ The measured values are displayed. The measured
value recording symbol shown at the right appears.
Each time this key is pressed, the currently displayed
measured value is saved to the buffer.
➭ Turn off the device under test.
➭ Stop the test: press the START/STOP key.
The save symbol appears (floppy disk showing the
number of measured values stored to buffer memory)
and prompts you to save the measured values to an ID
number.
➭ Read the measured values and compare them with the
table of permissible limit values.
➭ Press the ESC key in order to discard the measured
values stored to buffer memory and acknowledge by
pressing the key shown at the right.