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Chapter 3 Calibration
Revision W
HF Series X-ray Generators - Service Manual
3-54
Quantum Medical Imaging, LLC
AEC Optical Density Calibration Procedure
This procedure calibrates the generator’s AEC system to a user-selectable
optical density setting (e.g., 1.3). When calibrating the first film/screen
combination, which should be the slowest speed film and/or largest SID,
set "AEC Ref" to 2000, and adjust the MASTER GAIN potentiometer on
the ion chamber for desired optical density. Proceed as follows:
An AEC Calibration Worksheet is provided in Table 3-8 for recording cali-
bration data.
Table 3-7. AEC Calibration Procedure Sequence
FILM/SCREENS TO BE
CALIBRATED
REQUIRED AEC CALIBRATION
PROCEDURES/SPECIAL INSTRUCTIONS
WALL STAND 72" SID
FILM/SCREEN
(SLOWEST SPEED,
LARGEST SID)
1. Perform "Ion Chamber Balancing" procedure.
2. Perform "AEC MAS Balance" procedure for
wall stand ion chamber.
3. Perform "AEC Optical Density (OD) Calibra-
tion":
a. Set desired "base" optical density
b. Set "AEC Ref" to 2000.
c. Adjust ion chamber’s MASTER GAIN
potentiometer until base optical density is
achieved in developed films.
4. Perform "Reciprocity Calibration".
5. Perform "AEC KV Calibration".
WALL STAND 40" SID
FILM/SCREEN
1. Copy "Wall 72" film/screen to "Wall 40".
2. Perform "AEC Optical Density (OD) Calibra-
tion", however,
DO NOT
re-adjust the ion
chamber MASTER GAIN potentiometer.
Adjust "AEC Ref" to obtain desired (set) opti-
cal density.
3. Perform "Reciprocity Calibration".
4. Perform "AEC KV Calibration".
TABLE 40" SID FILM/
SCREEN
1. If system includes a wall stand, copy "Wall 40"
film/screen to "Table 40".
2. Perform "Ion Chamber Balancing" procedure
for table ion chamber.
3. Perform "AEC Optical Density (OD) Calibra-
tion":
a. Set desired "base" optical density
b. Set "AEC Ref" to 2000.
c. Adjust ion chamber’s MASTER GAIN
potentiometer until base optical density is
achieved in developed films.
4. Perform "Reciprocity Calibration".
5. Perform "AEC KV Calibration".
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...