Agilent Technologies 6890 Series Service Manual page 683

1210 External Connectors, 6890A and 6890 Plus
APG remote start/stop
Prepare
H
H
Start Request
H
Start
H
Stop
L
Ready
Shutdown H
Figure 1210-3
Control of analysis is maintained by signal readiness READY for next analysis,
followed by START of run and optional STOP of run triggered on the respective
lines. In addition, PREPARE and START REQUEST may be issued.
The signal levels are defined as standard TTL levels (0 V is logic true, +5 V is
logic false).
Input Load >= 2.2 kOhm against +5 V
Output type is open collector.
6 of 14
Remote control analysis.
Electrical
Agilent 6890 Gas Chromatograph Service Manual
Jun 2001