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CPI Canada Inc.
AEC Calibration
3D
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
Page 3D-7
3D.2.3 AEC Board (Ion Chambers)
The AEC board shown below is compatible with various models of ion chambers as per AEC compatibility
matrix SUP73799800.
This board is fitted with 9 pin D connectors J1 to J4.
Figure 3D-3: Dedicated ion chamber AEC board (assembly 737998)
AEC board input assignment (examples only, actual receptor assignments may vary):
•
Ch 1 = J1 - Table Radiographic Bucky.
•
Ch 2 = J2 - Vertical Wall Bucky.
•
Ch 3 = J3 - Spot Film Device.
•
Ch 4 = J4 - Aux. (Extra Bucky, Digital Acquisition, etc).
The following potentiometers are used for AEC gain adjustment:
•
R11 is used for channel 1 gain adjustment.
•
R12 is used for channel 2 gain adjustment.
•
R13 is used for channel 3 gain adjustment.
•
R14 is used for channel 4 gain adjustment.