Agilent Technologies 6890 Series, Service Manual, Page: 698 / 867

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