Agilent Technologies 947 Betriebs- Und Servicehandbuch Seite 216

Models 947, 948 and 960 Leak Detectors Operations and Service Manual
Table D-2 Optional Discrete I/O Parallel Interface (J120) (Continued)
6 Parallel Enable
7 Zero
9 Auto Cal
10 Decrement
11 Increment
12 Auto Range
14 Hold
15 Filament Fault
16 Not Ready
18 CAL OK
19 Zeroing
21 Calibrating
23 Ready
27, 28 +24 VDC for Output Sourcing
D-2
Active High
200 msec high pulse
200 msec high pulse
200 msec high pulse
200 msec high pulse
Active High
Active High
Active High
Active High
Active High
Active High
Active High
Enables rear panel
PLC Interface.
Begins Auto Zero routine.
Begins Auto Calibrate.
Decrements the exponent
when in manual ranging.
Increments the exponent
when in manual ranging.
Automatically changes the
exponent to keep the reading
in range.
Not used.
Active when the selected
ion source filament is
non-functional.
Not ready to run – possible fault. Output
Active when last
CALIBRATE successful.
Active when Auto Zeroing.
Active when Auto Cal.
Active when system is operating
(inverse of "Not Ready").
Input
Input
Input
Input
Input
Input
Input
Output
Output
Output
Output
Output
Output