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Requirements for ``foreign'' instrumentation

  In order to connect and integrate a device into the GBT control system, there are only a few requirements that must be met. The device must have a way for the GBT control system to tell it when to start, and it must be able to report to the control system the earliest time it can start. In the native GBT systems, this intelligence is built into the device managers. In a device that is to be integrated, a simple device manager would be written that can translate the M&C commands into those suitable for the device, and the status of the device can be passed along to the control system. The interface to the device could be virtually anything; for example, Ethernet, serial ports, parallel ports, TTL signals, etc.

John Ford
Fri Mar 13 16:06:38 EST 1998