10
GMC-I Messtechnik GmbH
3
Function and Range Selection
3.1
Measuring Function Selection
The desired measuring function is selected with the function
selector switch (white or green print). In order to select the
function printed in green color, the yellow multifunction key
must also be pressed. If the multifunction key is pressed again,
the function printed in white half circle is reactivated.
3.2
Automatic Measuring Range Selection
These multimeters features auto-ranging for all measuring
ranges except for the ranges 400 mV
~
and 10 A. Automatic
selection is functional as soon as the multimeter is switched
ON. According to the measured quantity applied, the multime-
ter automatically selects the measuring range which gives the
best resolution.
3.3
Manual Measuring Range Selection
You can switch OFF auto-ranging. Select and fix the ranges
manually according to the table given on page 11.
First select the desired measuring function with the function
selector switch and, if appropriate, the multifunction key.
Briefly activate the AUTO/MAN key.
Manual mode is switched OFF if you press and hold the AUTO/
MAN key until you hear a second acoustic signal, and the dis-
play switches to AUTO.
When switching back to automatic operation in the 400 mV
~
range, the 4 V
~
range is activated.
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