9600 Service Manual - gmecorp-usa.com

Image System Calibration 33
BEAM ALIGNMENT VERIFICATION
1. Insert a film cassette into the Beam Alignment Tool.
2. Select MANUAL FLUORO mode.
3. Select the NORMAL field size and set the technique to 50 kVp @ 0.5 mA. Press
the X-ray ON key for 2 seconds.
4. Select MAG 1 field size and press the X-ray ON key for 2 seconds.
5. Select MAG 2 field size and press the X-ray ON key for 2 seconds.
6. Manually collimate to the minimum field size and press the X-ray ON key for 2
seconds.
7. Develop the film and confirm the field sizes match the following specifications:
FIELD SIZE RANGE
9" mode (NORMAL) A
6" mode (MAG1) B
4" mode (MAG2) C
8. Verify that the minimum field size is less than 5 cm 2 .
9. Use a ruler and verify the center of the image is centered on the sheet of film (in
both the X and Y axis) within 20 mm or 13/16”.
10. Verify the line pair resolution.
FIELD SIZE 60 Hz lp/mm 50 Hz lp/mm
NORMAL 1.4 1.2
MAG1 2.0 1.7
MAG2 2.4 2.0
11. Send the films to OEC Medical Systems, Inc. Attention: Technical Support, 384
Wright Brothers Drive, Salt Lake City, UT. 84116.
12. Remove the Beam Alignment Tool.