IsoPrime User’s Guide
Version 1.01 IsoPrime100 User’s Guide Page 37 of 219
Layout of Electronic Units (rear view)
SYSTEM CONTROLLER
The system controller, which controls all the electronic systems of the instrument, is
located on the right hand side of the cubicle. The proximity of the high voltage
supplies to the source provides the greatest protection to the system against flashover.
The controller is based around a dedicated Motorola 68000 microprocessor.
The data system computer controls the instrument via a fibre optic link.
The system controller supports the following functions:
Active gauge interface for the Pirani and Penning gauges
Power supplies for instrument cooling
Valve control for continuous flow interfaces
Electromagnet control
Head amplifier power supply
Roughing Isolation Valve
Foreline Trap Vent Valve
Rating Plate
RS232 Connection
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