Chapter 9
Page no. 1564
JC-DR-A-404.fm
GE Healthcare
Senographe DS
Revision 1
Service Information and Procedures Class A 2385072-16-8EN
Job Card D/R A404 - HV Unit
7
COMPLETION
Carry out the following calibrations:
Calibrations - Checks
Job Card
Acquisition Image Chain
Heating Current Calibration
Job Card CAL A001 - Heater Current Scale Factor
Bias Calibration
Job Card CAL A003 - X-Ray Tube Focal Bias Voltage Scale Factor
Tube mA Measurement
Job Card CAL A009 - X-Ray Tube mA Measurement
kV Scale Factor
Job Card CAL A011 - Calibration of kV Scale Factor
mAs X-ray Calibration
Job Card CAL A012 - X-Ray Tube Heater Current
Bad Pixel Calibration
Job Card CAL A041 - Bad Pixel Calibration
Gain calibration
Job Card CAL A043 - Detector Gain Calibration
flat field tests
Job Card ELE A032 – IQ Tools Flat Field Test
If IQ Tests not OK, repeat all calibrations from Bad Pixel.
Half Value Layer
Job Card CAL A046 - Half-Value Layer Measurement
Conversion Factor
Job Card CAL A045 - Conversion Factor Measurement
Use the same dosimeter as that used for CAL A046
AOP: Automatic Optimization of Parameters
AOP Calibration
Job Card CAL A051 - AOP Calibration
mAs non linearity
Job Card CAL A053 - mAs Non-linearity Calibration
AOP/SNR Check
Job Card ELE A038 - AOP Mode and SNR Check
If AOP/SNR Test not OK, repeat all calibrations from AOP Calibration.