2.7 Aec Board (Universal Aec Board) - CPI Indico 100 Series Service And Installation Manual

CPI Canada Inc.
3D.2.7 AEC Board (Universal AEC Board)
The AEC board shown below is factory configured to be compatible with most makes/models of AEC
chambers (ion and solid state) on the market. This assembly also contains a low current, high voltage supply
for a photomultiplier tube (PMT). The PMT supply is located on the upper board, which also contains the
connectors to interface to the AEC pickup device(s).
AEC board input/output assignment:
•
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:
•
R1 is used for channel 1 gain adjustment.
•
R26 is used for channel 2 gain adjustment.
•
R27 is used for channel 3 gain adjustment.
•
R28 is used for channel 4 gain adjustment.
Refer to the end of subsection 3D.2.7 for the procedure for adjusting R10, R19, and R24.
Millenia / Indico 100 Series Service Manual
Figure 3D-10: Universal AEC board
• J7 = High voltage output for the PMT (if used)
Ch # 740904-06 Rev. D
3D
AEC Calibration
Page 3D-17