GE Discovery LS - B.3 Three Monthly Calibrations

GE HEALTHCARE
DIRECTION 2307224-100, REVISION 6DISCOVERY LS SYSTEM SERVICE MANUAL
Appendix B - System Calibration Quick Guide Page 355
B.3 Three Monthly Calibrations
Note: Well Counter correction should be performed after running the VQC procedure.
No. Calibration Type Duration and Notes
1 Reboot 5 min.
2Singles:
Position
50 min.
(Also performed after detector replacement).
3Singles:
Update Gain
50 -240 min.
Always performed after Position (crystal map
calibration) and after detector or ACEM board
replacement.
4Singles:
Default Gain
50 min.
Used to change default. For normal use, Singles Update
gain is recommended.
5Singles:
Energy
50 min.
Always performed after Position (crystal map
calibration).
6 CTC 10 - 15 min.
7 Blank Scan 30 min.
8 Normalization 12, 18, or 24 hours depending on sources strength.
9 VQC 10 min.
Weekly for first month, and three per month thereafter.
10 Well Counter
Calibration
1 - 2 hours
11 Tube Warm-Up 1 min.
12 Full System Cal 30 min.
13 Clean Database 20 min.