2.6 Aec Board (Ion Chambers) - CPI Indico 100 Series Service And Installation Manual

CPI Canada Inc.
3D.2.6 AEC Board (Ion Chambers)
The AEC board shown below is compatible with various makes/models of ion chambers (i.e. AID, GE,
Vacutec, Philips Amplimat). This AEC board is used in various models of generators requiring those AEC
chamber types and requiring short AEC time compensation.
This board will be fitted with 15 pin D connectors (J11 to J14) or with 12 pin in-line connectors (J1 to
J4), depending on the application.
AEC board input assignment:
• Ch 1 = J1/J11 - Table Radiographic Bucky.
• Ch 2 = J2/J12 - Vertical Wall Bucky.
• Ch 3 = J3/J13 - Spot Film Device
• Ch 4 = J4/J14 - Aux. (Extra Bucky, Digital Acquisition, etc.)
The following potentiometers are used for AEC gain adjustment:
•
R1 is used for channel 1 gain adjustment.
•
R2 is used for channel 2 gain adjustment.
•
R3 is used for channel 3 gain adjustment.
•
R4 is used for channel 4 gain adjustment.
Millenia / Indico 100 Series Service Manual
Figure 3D-9: Dedicated ion chamber AEC board
Ch # 740904-06
AEC Calibration
Rev. D
3D
Page 3D-15