Agilent Technologies VS Series Operation Manual page 138

VS Series Helium Mass Spectrometer Leak Detectors
Pin
No. Signal Name
11 REJECT4_
OUT
12 CAL_OUT_
OK
13 AUTO_
MANUAL_
RANGE_IN
14 CAL_IN
16 ZERO_IN
18 HOLD_IN
20 VENT_IN
22 TEST_IN
A-16
Table A-6 I/O Connector Pin Signals (Continued)
I/O Signal
O Level Active HIGH when the test
port pressure is over set
point #4.
O Level Active HIGH when
calibration is successful.
I Level Active HIGH when Manual
Ranging is selected.
I > 200 Active HIGH pulse.
ms Pulse
I > 200 Active HIGH pulse.
ms Pulse
I > 200 Active HIGH pulse.
ms Pulse
I > 200 Active HIGH pulse.
ms Pulse
I > 200 Active HIGH pulse.
ms Pulse
Description Leak Detector Behavior
Indicates that the value of
the test port pressure
exceeds the value set in the
4REJECT variable.
Indicates the calibration has
successfully completed. Set
low on power-up or if
calibration is not
successfully completed.
Activation causes the leak
detector to change from
AUTO to MANUAL ranging
; Default is AUTO.
Initiate CALIBRATING
routine with Internal
Calibrated Leak; Zeroing
routine is included.
Initiate ZEROING routine.
Initiate HOLD routine and
isolate the test port and any
test objects from leak
detector vacuum system.
Initiate VENT routine and
vent the test port to
atmosphere.
Initiate ROUGHING routine
on the test port and any
attached test objects.