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Revision W
HF Series X-ray Generators - Service Manual
A-14
Quantum Medical Imaging, LLC
Appendix A AEC Calibration with DR or CR Film Plate
(refer to manufacturer’s installation and calibration documentation
supplied with DR system) with the AEC REF value appearing in AEC
Optical Density Calibration screen shown above.
8. Set the ion chamber detector selection to middle detector and ensure
x-ray tube is at correct SID. Ensure the ion chamber has been bal-
anced.
9. Verify the Optical Density field is set to the desired optical density
(e.g., "1.30"). If not, press the up or down key located next to the
Optical Density field until the "base" optical density setting is equal
to the desired optical density (1.30 in this example).
Do not change
the optical density setting at any time during this procedure.
10. Place 5 cm of acrylic in the X-ray beam.
11. On AEC Control Board AY40-031S, adjust ion chamber MASTER GAIN
potentiometer A11R22, A11R23, and A11R24 to midrange.
12. Take an exposure at the setting indicated in the center display box
(i.e., 50 kVp, 200L mA).
13. Determine the sensitivity value (sometimes referred to as the "REX"
or "S" value, depending on DR system manufacturer).
a. If the sensitivity value is within acceptable range as defined by
the digital receptor manufacturer, continue at step 14.
b. If not within range, adjust the associated ion chamber’s MASTER
GAIN potentiometer and repeat exposure. Continue until the sen-
sitivity ("REX" or "S") value is acceptable. Note the sensitivity
value as it will be needed in a later step.
14. Move the DR receptor to the other receptor cabinet (it’s ion chamber
should be connected to WALL#2 connector A11J3 on AEC Control
Board) and collimate down to proper image size.
15. With 5 cm of acrylic in the X-ray beam, take an exposure at the set-
ting indicated in the center display box (i.e., 50 kVp, 200L mA).
16. Determine the sensitivity value (sometimes referred to as the "REX"
or "S" value, depending on DR system manufacturer).
17. If necessary, adjust the ion chamber’s MASTER GAIN potentiometer
and repeat exposure until the sensitivity ("REX" or "S") value is the
same as the value obtained for the previously calibrated ion chamber
in step 13b.
Note: If later on it becomes necessary to adjust
the optical density of either receptor’s ion cham-
ber, this should be done by adjusting potentiome-
ter A11R23 on the AEC Control Board, and if
further adjustment is needed, increasing or
Содержание ODYSSEY HF Series
Страница 1: ...Service Manual ODYSSEY Q VISION HF Series X ray Generators Manual Part No DC30 011 Revision W...
Страница 15: ...Chapter 1 1 SPECIFICATIONS 1...
Страница 16: ...1 2...
Страница 37: ...Chapter 2 1 ASSEMBLY INSTALLATION 2...
Страница 38: ...2 2...
Страница 93: ...Chapter 3 1 CALIBRATION 3...
Страница 94: ...3 2...
Страница 165: ...Chapter 4 1 THEORY OF OPERATION 4...
Страница 166: ...4 2...
Страница 185: ...Chapter 5 1 SERVICE INSTRUCTIONS 5...
Страница 186: ...5 2...
Страница 281: ...Chapter 6 1 DIAGRAMS 6...
Страница 282: ...6 2...
Страница 349: ...A 2...
Страница 364: ...B 1 CALIBRATION Agfa DiRex B Appendix...
Страница 365: ...B 2...
Страница 420: ...C 1 Log4View Error Logger C Appendix...
Страница 421: ...C 2...
Страница 428: ...D 1 CALIBRATION Using Generator Service Tools D Appendix...
Страница 429: ...D 2...