GE_OEC_9600_C-Arms

MA GENERATION
OVERVIEW
Tube current (mA) is regulated by a dynamic, self correcting servo control loop
comprised of a drive PAL, control amplifier, error amplifier, sense circuit, variable
filament voltage regulator, and a duty-cycle controlled filament drive circuit.
In the Auto mode, the Technique Processor PCB varies the mA according to the video
level signal received from the CCD camera until the proper video level is achieved.
In the Manual mode, the operator varies the mA.
Power for X-ray generation is buffered by battery packs which enable the generator to
be powered by standard single phase AC power.
The theory in this section is most easily understood while using the following
schematics. Use the correct interconnect diagrams and circuit board schematics for your
system.
REFERENCE SCHEMATICS
Analog Interface PCB
Schematic # 00-876738 - All S/N
Mainframe Motherboard
Schematic # 00-875539 - System S/N 69-0001 thru 69-2000
Schematic # 00-878396 - System S/N 69-2001 and up
X-ray Regulator PCB
Schematic # 00-877458 - All S/N
Generator Driver PCB
Schematic # 00-877461 - All S/N
C-Arm Interconnect Diagram
Schematic # 00-875500 - System S/N 69-0001 thru 69-1000
Schematic # 00-877972 - System S/N 69-1001 thru 69-2000
Schematic # 00-878376 - System S/N 69-2001 and up