INFICON VGC401 Single-Channel Controller - Manual (Page 52)

52
tinb01e1-f (2011-07) VGC401.om
Test of the display.
Test sequence
The test runs automati-
cally one time
1) :
Ö First, all display ele-
ments are lit at the
same time, ...
HV COR
:
HV COR
Ö ... and then, each ele-
ment is lit individually.
1)
para
Ö Stop the test sequence
and activate one element
after another by pressing
the key once per element.
Test of channel 0 of the analog/digital converter (with a
reference voltage at the signal input of the SENSOR
connector (
→  23)).
The measurement value filter affects the applied
voltage. If the signal input is open, the VGC401
displays a default value that may easily fluctuate
because of the high sensitivity of the open
measurement circuit.
Test sequence
e.g.:
Ö Positive portion of the meas-
urement signal in Volt
Display test
A/D converter test 0