Appendix D Calibration (Using Generator Service Tools)
HF Series X-ray Generators - Service Manual Revision W
Quantum Medical Imaging, LLC D-25
WARNING! The following procedure requires that
power be applied to the generator. Extreme care
must be exercised to ensure the safety of service
or other personnel in the area.
The following procedure calibrates the generator to verify accurate system
measurement of the above operating voltages. The same procedure applies
to any of the voltage levels available for selection. Voltage measurement
accuracy is verified using your pre-calibrated voltmeter (traceable to NIST
standard) as a benchmark. Once calibrated, the generator’s CPU continuously
monitors these internal voltages and will terminate or not allow exposure if
specified tolerances are exceeded. Proceed as follows:
+15VDC ±0.2 VDC TP3 on KVP Control Board AY40-003S
-15VDC ±0.2 VDC TP5 on KVP Control Board AY40-003S
+24VDC ±0.3 VDC
TP8 on Power Supply Board
AY40-005T
Unreg. +24V
(Brake)
±0.3 VDC
Terminal TB2-1 on Interface Board AY40-023T (or
AY40-034T)
Table D-1. A/D Calibration Voltages
Voltage Level
Calibration
Accuracy
Test Point Measurement Location
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