Adjusting The Optical Density (=O.d) - GE Alpha RT 32551 Installation Instructions Manual

32551-IMG rev 6
4 Make exposures (do not develop the film) and adjust the trimmer R17
(CCW to increase frequency) on the AEC board so that the AEC
frequency will be appr. 32kHz (that is the second value in the mAs
window reading about 320).
Fig 5.14. Location of AEC adjustment potentiometer
Also the exposure time is shown in the timer display (for example 315 =
315 ms, 1.54 = 1.54 sec.
5.2.16

Adjusting the optical density (=O.D)

1 Reload the cassette with a new film and make a new exposure with
the clinical kV (for example 26kV). Develop the film and mark the
optical density of the film (=O.D) to the graph next page.
2 Alter the AEC Gain parameter 'g in the service program #64 to 1.10,
reload the cassette with a new film and make a new exposure.
Develop the film and mark the optical density of the film (=O.D) to the
graph next page.
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5 Setups, alignments and adjustments
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