System Communications
Generator Node
The Generator Node on the X-Ray Controller PCB controls the electrical components that determine x-ray technique, pulse rates,
etc. Technique and shot data gathered by the X-Ray Controller PCB during and after the exposure are sent to the Workstation
Node for display on the monitors as well as being sent to the Fluoro Functions PCB Node for display on the X-Ray Control Panel.
Frame Sync Circuitry
The frame sync circuitry is composed of the circuitry associated with RS485 receiver U45 and PLD U37
on the X-Ray Controller
PCB
. The incoming frame sync signal, INT_SYNC*, is a 190 microsecond active low signal that is buffered by U45. This signal is
digitally filtered by U37 to prevent noise spikes from falsely interrupting the microcontroller.
Camera - Control Panel Communication (RS422)
When a key is pressed on the C-Arm keyboard, a hex value is sent from the Control Panel Processor PCB to the Fluoro Functions
PCB in the C-Arm by RS-422 serial communications.
The RS422 signal is routed from the Control Panel Processor PCB, through the Control Panel Processor I/O PCB to the
Power/Signal Interface PCB, through the back-plane, and is received by quad receiver U57 on the Fluoro Functions PCB. The
output of U57 is fed to Micro-controller U36.
3
Service
Periodic Maintenance
Contents
Schematics
Illustrated Parts
Installation
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