Universal APX 525 - Long Exposure Mas Calibration; Calibrate Kv

APX 525/625 Generator Revision C Service Adjustments
© 2005 Del Medical Imaging Corporation
7/5/2005 Page 138
mA
300 mA
Time
500 mSec
Indicated
mAs
150 mAs
4. Make exposures and adjust R2 on the mAs (124-0145G1) PWB for a reading of
150 mAs (+
1 mAs) on the Dynalyzer™
Long Exposure mAs Calibration
5. Set the generator as follows:
Mode
3 point
Focal Spot
Large
kV
84 kV
mA
25 mA
Time
6.0 Seconds
Indicated
mAs
150 mAs
6. Make an exposure and record the mAs indicated by the Dynalyzer™, if you have
a display
7. Adjust R14 on the mAs PWB (124-0145G1) so that the indicated mAs on the
Dynalyzer™ is 150 mAs (+1 mAs). (CCW increases mAs)
8. Increase the mA to 300 mA and shorten the Time to 500 mSec.
9. Make another exposure and confirm that the mAs of the shorter exposure is still
150 mAs (+/- 1 mAs).
10. Turn the generator OFF
11. Remove the mAs (124-0145G1) PWB from the card extender and insert it back
into the card cage
Calibrate kV
1. With power OFF, place the kV Regulator Board (124-0110G1) on the extender
board
2. Turn the generator ON
3. Set the generator as follows: