Scanner X-Ray - GE Medical Systems PRODIGY Service Manual

3.2.7 Scanner X-ray

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PRODIGY Service Manual (Rev C - 2000)
•Bias Control - adjusts the bias of the detector. PRODIGY Systems
run with detector bias on demand (when x-rays are present) of
450VDC.
•DCA window settings - view DCA window settings - these settings
should not be edited.
•Detector status - allows the service engineer to view the detector
status real time - information displayed includes Peak setting Bias
setting, and DCA window settings.
•Detector AGS Tab
•AGS DAC control (verify AGS DAC settings), check on detector
rollover, and check on channel count rates.
•AGS Mode - the operate / calibrate signal (disables the AGS systems
so that the detector can be peaked correctly) can be toggled.
•X-ray Tests Tab-
•Manual Test - Control Manually the Shutter, X-ray on Indicator and
patient Positioning laser
•Automatic test - automatically toggle the Shutter, Laser and X-Ray
Relay
•X-Ray Source - Turn on source (ramp and make x-rays), warm up a
tube head at install or replacement.
•X-ray cycle test - cyclically ramp the source - (can be used to test
ramping failures or for arcing)
•X-rays Tab
•Ramp the kV and / or the mA of the x-ray generation system and view
feedback real-time. Faults are displayed and polled real-time in the
window on the right.
•Ports Tab - view status of and send commands to (c)SBC ports (see
section 2.4 for (c)SBC port definitions).
•Download Tab - identical to Set Download Parameters (section
3.1.7)
DO NOT adjust the detector Bias, DCA
windows or AGS DAC settings -
changes in the Detector bias, DCA
windows or AGS DAC's can change the
scanner's results.
Service Software3-107