8 Electronics
Back panel and connectors
245
Back panel and connectors
The back panel contains several connectors, primary fuses, and the HP-IB address
switches. Most of these components are part of the ac board or the HP-IB/MS con-
trol card, and extend through the back panel. These include:
• Remote start connector
•I/O (
HP-IB) connector
• High vacuum signal (
HIVAC SIGNAL) connector
• High vacuum power (
HIVAC POWER) connector
• Primary fuses
• Power cord receptacle
• Foreline pump cord receptacle
• HP-IB address switches
The following material describes the functions of these connectors and controls.
Remote start connector
The remote start connector is the external connector for the remote start circuitry
on the HP-IB/MS control card. It receives remote start signals from the GC.
I/O (HP-IB) connector
The HP-IB cable from the data system is connected to the I/O (HP-IB) connector.
This cable carries all data communication between the MSD ChemStation and the
MSD.
HP-IB address switch
The HP-IB address switch is located on the HP-IB/MS control card. A port in the
back panel allows access to the switch. Switch positions should not be changed for
normal operation.
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