3D
AEC Calibration
CPI Canada Inc.
Use and disclosure is subject to the restrictions on the title page of this CPI document.
Page 3D-10
Rev. A CMP 200
®
Service Manual Ch # 901476-05
3D.2.4 AEC Board (5-Field Ion Chambers) (Cont)
Table 3D-6 shows the pin outs for the 15 pin D connectors on the AEC board in figure 3D-4. The 15 pin
connectors are compatible with some models of three-of-five-field AID ion chambers.
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
Not used
10
Portrait
11
Not used
12
Inverted
13
Not used
14
Not used
15
Table 3D-6: Pin outs for 15 pin D connector (J1 and J2)
NOTE:
Jumpers JW5 to JW8 swap the left and right fields on J1 and J2 as per the table below.
CHANNEL
LEFT / RIGHT FIELDS AS PER
TABLE 3D-6
LEFT / RIGHT FIELDS SWAPPED RELATIVE
TO TABLE 3D-6
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)
NOTE: THE FIELD COMPENSATION VALUES (
R FIELD COMP
,
C FIELD COMP
,
L FIELD COMP
) IN AEC
SETUP MENU 2 MUST ALL BE SET TO
0
. THE AEC FIELD BALANCE MUST BE DONE AS PER
A.I.D.’s RECOMMENDED PROCEDURE.
