Discovery QDR Series Technical Manual
4-9
19. Follow the procedure in step 3 while checking detectors number 44 and 171 to
check for the fall off of x-rays.
20. Tighten the four array X-alignment nuts.
21. Click X-ray (F2) to turn x-rays off.
22. Remove the block and pin (Discovery A Only).
23. Click Close to exit X-Ray Survey.
24. Reboot the PC to return to the Discovery software.
4.5 Aperture Calibration
Note: Aperture Calibration cannot be run on Ci and Wi)
This procedure locates the exact starting positions of each aperture (slit) in motor steps
and the center of each slit.
1. Center the table.
2. From the Discovery Main Menu screen, select Utilities|Service Utili-
ties|SQDRIVER.
3. At the CARM$$$$> prompt type CALIBRATE<Enter> (Note that this proce-
dure takes approximately 2 – 3 minutes to start and 10 minutes to complete).
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