Quantum ODYSSEY HF Series User Manual

Appendix B Calibration (DiRex System)
HF Series X-ray Generators - Service Manual Revision W
Quantum Medical Imaging, LLC B-51
• KV - Calibrates the tube voltage settings used in conjunction with the
currently selected film/screen and ion chamber combination
• Change Film Screen - Accesses the Select Film Screen Menu (see
Figure 3-23) for selection of a film screen to calibrate.
• Back - Returns to the Calibration Menu (see Figure 3-16)
Optical Density Calibration
This procedure calibrates the generator’s AEC system to a user-selectable,
dose calculation (density) setting (e.g., 2.1). This setting determines the
basic "brightness" quality of images acquired in AEC mode using the CR sys-
tem. This is accomplished by comparing the CR Film Plate’s actual Logarith-
mic Median (LGM) value with the Target Level selected using the AEC Optical
Density Calibration screen (see Figure B-27).
When calibrating the first film/screen combination, which should be the slow-
est speed film and/or the largest SID receptor, set the "AEC Base" value to
2000, and adjust the MASTER GAIN potentiometer on the ion chamber until
the desired target density is obtained. Proceed as follows:

Quantum ODYSSEY HF Series Specifications

General

Brand	Quantum
Model	ODYSSEY HF Series
Category	Medical Equipment
Language	English