CPI CMP 200 Series Service Manual page 216

CPI Canada Inc.
3D.3.0 AEC CALIBRATION (TABLE BUCKY) Cont
Step
35. Repeat steps 26 to 34 for the remaining breakpoints: 50 kV, 65 kV, 110 kV, 130 kV, 85 kV, and 95 kV. Do the breakpoint calibration
in the stated order.
The 50 kV and 130 kV breakpoints only need to be calibrated if these kV ranges are used with AEC. Refer to the comments
below.
50 kV: At approximately 50 kV and under, the film screen sensitivity becomes too low for practical AEC operation when used with
a Bucky. Unless special techniques are used which require the 50 kV range, simply enter the 55 kV calibration number into
the 50 kV breakpoint.
130 kV: Unless special high kV techniques are used which require the 130 kV range, simply enter the 110 kV calibration number
into the 130 kV breakpoint.
36. Repeat steps 9 to 35 for FILM SCREEN 2, except:
1. Film screen 2 must be the next highest film speed after film screen 1.
2. When calibrating the 75 kV breakpoint for film screen 2, DO NOT adjust the AEC board gain pot. Dose adjustments
for film screen 2 at 75 kV must only be made by varying the 75 kV breakpoint calibration numbers.
37. Repeat steps 9 to 35 for FILM SCREEN 3, except:
1. Film screen 3 must be the highest film speed.
2. When calibrating the 75 kV breakpoint for film screen 3, DO NOT adjust the AEC board gain pot. Dose adjustments
for film screen 3 at 75 kV must only be made by varying the 75 kV breakpoint calibration numbers.
Step Action (membrane console)
Select << to return to the AEC
38.
CALIBRATION menu.
Use and disclosure is subject to the restrictions on the title page of this CPI document.
®
CMP 200 Service Manual Ch # 901476-05 Rev. A
Action
Action (PC GenWare®)
AEC Calibration
Action (Touchscreen GenWare®)
Page 3D-23
3D