User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
344323
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
Page 434
15 Dec 2005
Table 45. 41Pin VSI/TRA Interface Descriptions (cont)
Connector Pin
Designation
Functional Description
J134 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 24 and 25. If CS2 is open, a Boeing Airplane Company remote light sensor
type (10 to +10 V) is expected at pins 24 and 25. If grounded a Douglas Aircraft
Company remote light sensor type (0 to 18 V) is programmed. Also see pin 25.
For 89X units, CS2 is used to program the VSI display for English or Metric. If pin
J134 is open, information is displayed in English. If 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
CS2 CS3
Pin 34 17 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)
J135 CONFIGURATION STRAP #4 INPUT (NO):
For 86X, 88X, and 89X units, CS4 is paired with CS5 (pin 36) to program the
VSI/TRA to display VSI only, VSI/RA or VSI/RA/TA.
The following applies: O = Open, G = Ground
CS4 CS5
Pin 35 36 Definition
O O VSI/RA/TA
G O VSI/RA
O G VSI Only
G G Invalid
For 84X units, CS4 is paired with CS3 (pin 17) to program the Display Range Format.
The following applies: O = Open, G = Ground
CS4 CS3
Pin 35 17 Definition
O O 14 Nautical Mile Range
G O 6 Nautical Mile Range
O G 40 nautical Mile Range
G G 6 Nautical Mile Range