INFICON VGC403 Three-Channel Measurement and Control Unit - Manual (Page 31)

tinb07e1-e 2011-07 Vacuum Gauge Controller
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5.4.11 A/D converter ID (Ad-i)
For each channel, display a signal (in volts) which is
caused by a resistor inside the connected sensor. This
signal is used for identification of the connected sensors.
Press the UP button to start the test.
5.4.12 I/O test (io-t)
Test all relays. In this test the relays are switched on and
off one after the other, and the relay states are shown on
the display. A circuit indicator or an ohmmeter may be
used to verify the relay states on the RELAY connection.
See Chapter 3.3.5 RELAY,  13.
Press the UP button to start the test.
Tab. 5-18 Relay test
5.4.13 RS232C test (rS-t)
Test the RS232C interface. In this test, the Vacuum
Gauge Controller echoes each character received from
from the serial interface back to the interface.
The test starts as soon as the rS-t parameter has been
selected. You may e.g. use a terminal program and input
characters via the keyboard. Each of the input characters
is returned to the terminal from the Vacuum Gauge Con-
troller. The data transfer between the two units is visible
on the terminal screen only.
Press the PARA button to quit the test and to return to the
measurement mode.
CAUTION
Relay test.
In this test the relays switch irrespective of the
actual pressure. This may cause unintended
switching of devices.
Unplug the RELAY connection before per-
forming a relay test.
Display Significance
off All relays switched off
r1-H
r1-L Switching function 1 relay on
Switching function 1 relay off
r2-H
r2-L Switching function 2 relay on
Switching function 2 relay off
r3-H
r3-L Switching function 3 relay on
Switching function 3 relay off
r4-H
r4-L Switching function 4 relay on
Switching function 4 relay off
r5-H
r5-L Switching function 5 relay on
Switching function 5 relay off
r6-H
r6-L Switching function 6 relay on
Switching function 6 relay off
r7-H
r7-L Error signal relay on
Error signal relay off