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1
Introduction
Interfacing Start Events to External Devices
Remote control processor
The remote control processor on the LAN/MS control card synchronizes
start-run signals with GCs and other devices. The functions of the remote control
processor are extended to the remote start (Remote) connector on the back
panel of the MS. (See
MS. An optional cable can extend these events to another instrument.
Remote start signals
It is often necessary to communicate with external devices (for example, a
purge-and-trap) during a run. Typically, these communications are requests to
send a system-ready signal. They also include:
•
•
Figure 4.
System ready
When interfacing to an external device, it is often desirable to send a
system-ready signal to the device. In the case of a multisample Tekmar
purge-and-trap, each sample is purged onto a trap where it waits for a ready
signal. On receipt of the ready signal, the desorption cycle begins. When a
specific temperature is reached, the purge-and-trap closes a contact to indicate
the run has started.
16
Figure
Receive a start run signal from an external device
Program the timing of events during a run
Remote start connector
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
4.) The remote start cable connects the GC and the
Start
Ready
Ground
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Troubleshooting
