Apg Remote Signal Descriptions - Agilent Technologies 7820A GC Installation Manual

7820A GC Installation Guide
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1
6
9
5
Figure 13 APG Remote connector pin-out details

APG Remote signal descriptions

Prepare (Low True) Request to prepare for analysis.
Receiver is any module performing pre-analysis activities.
For example, shorting pin 2 to ground will put the GC into
Prep Run state. This is useful for Splitless Mode to prepare
the inlet for injection or when using the Gas Saver. This
function is not needed by Agilent autosampler systems.
Ready (High True) If The Ready Line is high (> 2.2 VDC)
then the system is ready for next analysis. Receiver is any
sequence controller.
Start (Low True) Request to start run/timetable. Receiver
is any module performing runtime-controlled activities.
The 7820A GC requires a pulse duration of at least 500
micro-seconds to sense a start from an external device.
Pin Function
Digital ground
1
Prepare
2
Start
3
Start relay
4
Start relay
5
not used
6
Ready
7
Stop
8
not used
9
7820A GC Installation Manual
Logic
LOW true
LOW true (input)
HIGH true (output)
LOW true