Operation Manual

10 GMC-I Messtechnik GmbH
Initial Start-Up – Setup
4 Initial Start-Up
4.1 Connection to the Mains (90 to 240 V, 50 to 400 Hz)
Connect the mains plug at the measuring instrument to the
mains power outlet.
4.1.1 Automatic Recognition of Mains Connection Errors
The measuring instrument’s protective conductor connection is
tested each time the start-stop key is pressed.
If a voltage of greater than 25 V is detected between the
protective conductor and the finger contact, no measurements
are possible. Disconnect the measuring instrument from the
mains immediately in the event of a mains connection error, and
arrange for the error to be corrected!
Note
Voltage at the mains protective conductor may cause
erroneous measured values during the measurement of
leakage current.
4.2 Switching the Measuring Instrument On
Initial Window
The initial window shown at the right ap-
pears in the event of mains connection.
4.3 Configuring Device Parameters – Setup Menu
All of the settings which are required for operation of the
measuring instrument can be entered in the setup menu.
Selecting Nominal Line Voltage ULN
Measured values acquired by
means of leakage current mea-
surement are normalized to the
selected ULN voltage value. Line
voltage parameter ULN (100, 110,
115, 117, 120, 127, 220, 230,
240 or 250 V) can be selected
with the ↑↓ keys, and adjusted
with the +/– keys. The voltage
value selected here is generated
by the measuring instrument for alternative measurement.
Setting Nominal Frequency
The frequency selected here is generated by the measuring in-
strument for alternative measurement of leakage current. Nominal
line frequency parameter F (50 or 60 Hz) can be selected with the
↑↓ keys, and adjusted with the +/– keys. This setting is irrelevant
for direct measurement and differential current measurement.
Setting Brightness and Contrast
Brightness (1 ...
40
... 100) and contrast (0 ...
40
... 63) for the LCD panel
can be selected with the
↑↓
keys, and adjusted with the +/– keys.
Activating Device Parameters
Changed values are permanently activated after acknowledging with
the key. The display is then switched to the main menu. If the
setup menu is exited with the ESC key, the changed values only re-
main active until supply power to the instrument is interrupted.
Function Test
For testing the keys, LCD segments and the acoustic warning sig-
nal.