User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 4-6: ACSS 55-Pin VSI/TRA Interface Descriptions (cont)
Connector Pin
Designation
Functional Description
J1-34
J1-34 CONFIGURATION STRAP #2 INPUT (NO):
For -84X and -88X units, this pin programs the VSI/TRA to use the
remote light sensor input at pins 23 and 24. If CS2 is open, a Boeing
Airplane Company remote light sensor type (-10 to +10 V) is expected at
pins 23 and 24. If pin 34 is grounded, a McDonnell Douglas Aircraft
Company remote light sensor type (0 to 18 V) is programmed. Also see
pins 23/24.
For -89X units, CS2 is used to program the VSI display for English or
Metric. If pin J1-34 is open, information is displayed in English. If pin 34
is grounded, the information is displayed in Metric.
For -86X units, CS2 is used with CS3 (pin 17) to program the lighting
curve. The following applies: O = Open, G = Ground
Pin
CS2
34
CS3
35
Definition
O
O
Boeing (Normal Configuration)
G
O
McDonnell Douglas
O G
Invalid (Displays VSI/TRA Red X fault
if wired)
G G
Invalid (Displays VSI/TRA Red X fault
if wired)
J1-35
CONFIGURATION STRAP #3 INPUT (NO):
For -86X units, CS3 is paired with CS2 to program the Lighting Curve.
See pin 34.
For -88X and -89X units, CS3 is paired with CS8 to program the Filter
Time Constant. See pin 22.
For -84X units, CS3 is paired with CS4 (pin 36) to program the display
Range Format. The following applies: O = Open, G = Ground
Pin
CS3
35
CS4
36
Definition
O
O
14-NMI Range
O G 6-NMI Range
G
O
40-NMI Range
G
G
6-NMI Range
4-90
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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