7 of 10
Jun 2001
Electrical
Agilent 6890 Gas Chromatograph Service Manual
External Connectors, 6890N 1215
Remote start/stop
Remote start/stop
Figure 1215-6 Remote start/stop connection
Signal descriptions
Prepare (low)—Request to prepare for analysis. Receiver is any module
performing pre-analysis activities.
Start (low)
—Request to start run/timetable. Receiver is any module
performing runtime-controlled activities.
Ready (high)
—System is ready for next analysis. Receiver is any sequence
controller.
Stop (low)
—Request to reach system ready state as soon as possible (for
example, stop run, abort or finish, and stop injection). Receiver is any module
performing runtime-controlled activities.
S
A
M
P
L
E
R
2
T
R
A
Y
S
I
G
1
S
I
G
2
E
V
E
N
T
B
C
D
R
S
/
2
3
2
R
E
M
O
T
E
LAN
S
A
M
P
L
E
R
1
S
A
M
P
L
E
R
1
S
I
G
1
R
E
M
O
T
E
1
6
5
9
JP1, REMOTE
Pin Function Logic
1 Digital ground
2 Prepare LOW true
3 Start LOW true (input)
4 Start relay
5 Start relay
6 No connection
7 Ready HIGH true (output)
8 Stop LOW true
9 No connection
REMOTE
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