2.2 Aec Precalibration Checks; 2.3 Aec Chamber Installation - CPI Indico 100 Series Service And Installation Manual

3D
AEC Calibration
3D.2.2 AEC Precalibration Checks
It is recommended that a copy of the form below be filled in with the required information before attempting
AEC calibration.
1.
Verify that the AEC chambers are mounted correctly
in the bucky or spot film device. Note that some
chamber types must be physically isolated from
equipment ground, refer to figure 3D-6 as an
example.
2.
Verify that each AEC chamber/pickup is properly
connected to its intended input channel on the AEC
board.
Refer to AEC board pictorials, figure 3D-8 to 3D-
10 for input channel designations
3.
Make and type of AEC chamber/pickup:
4.
Verify signal grounding for the AEC chamber. The
only electrical ground should be at the AEC board in
the generator. This applies to the ground braid
(shield) for the AEC signal cable and to the ground
return conductor(s) in the AEC signal cable.
5.
Verify that the AEC board is fully inserted into the
mating edge connector (if applicable), that all
connections to the AEC board are secure, and that
the AEC board is properly fastened to the door
support panel.
6.
Before calibrating, verify that the AEC system is
functioning.
chambers/devices and the AEC circuits in the
generator. Each of the fields on the AEC device
must be able to terminate the exposure.
7.
Radiographic techniques to be performed with the
equipment (high kV chest, G.I. studies etc)?
8.
Normal exposure factors used by the customer
(typical mAs/kV range)?
3D.2.3 AEC Chamber Installation
Figure 3D-6 shows an installed AEC chamber. Note particularly the use of a suitable insulating material to
isolate the body of the chamber from the receptor ground. This is required for non-insulated AEC chambers.
Page 3D-10
This includes the
Table 3D-3: Precalibration checklist
Rev. D Millenia / Indico 100 Series Service Manual
CHECK √:
CHECK √:
AEC Ch 1_____________________________
AEC Ch 2_____________________________
AEC Ch 3_____________________________
AEC Ch 4_____________________________
CHECK √:
CHECK √:
CHECK √:
AEC
CPI Canada Inc.
Ch # 740904-06