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3D
AEC Calibration
CPI Canada Inc.
Use and disclosure is subject to the restrictions on the title page of this CPI document.
Page 3D-8
Rev. A CMP 200
®
Service Manual Ch # 901476-05
3D.2.3 AEC Board (Ion Chambers) Cont
Table 3D-5 shows the pin outs for the 9 pin D connectors on the AEC board in figure 3D-3. The 9 pin
connectors are compatible with most models of AID ionization chambers. However, the installer should
verify compatibility of the pin outs with the chamber(s) being used.
FUNCTION PIN
NOTE
Not used
1
Left field select (refer to note below)
2
See note below.
Middle field select
3
Reset / start
4
Chamber output
5
Right field select (refer to note below)
6
See note below.
-12 VDC output
7
+12 VDC output
8
Ground 9
Table 3D-5: Pin outs for 9 pin D connector (J1 to J4)
NOTE:
Jumpers JW1 to JW8 swap the left and right fields on J1 to J4 as per the table below.
CHANNEL
LEFT / RIGHT FIELDS AS PER
TABLE 3D-5
LEFT / RIGHT FIELDS SWAPPED RELATIVE
TO TABLE 3D-5
1
Jumper JW7, JW8 pins 1-2 (N)
Jumper JW7, JW8 pins 2-3 (R)
2
Jumper JW5, JW6 pins 1-2 (N)
Jumper JW5, JW6 pins 2-3 (R)
3
Jumper JW3, JW4 pins 1-2 (N)
Jumper JW3, JW4 pins 2-3 (R)
4
Jumper JW1, JW2 pins 1-2 (N)
Jumper JW1, JW2 pins 2-3 (R)