User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 4−42
15 Dec 2005
Table 4−7. Pressure Transducer Module Interface Descriptions
Connector Pin
Designation
Functional Description
J1−1 CHASSIS GROUND INPUT:
Tied to aircraft frame. Also used to connect ARINC 429 cable shields to the chassis.
J1−2 EXTERNAL RESET INPUT:
This pin is used by factory test only. Do not connect this pin in aircraft installations.
J1−3 FAULT DISCRETE OUTPUT:
This pin is used by factory test only. Do not connect this pin in aircraft installations.
J1−5 +15 V dc POWER INPUT:
This power input is supplied by the VSI/TRA. The PTM receives ±15 V dc from the
VSI/TRA. The ±12 V dc used by the PTM is derived from this source.
J1−7 VERTICAL SPEED ARINC 429 (A) BUS OUTPUT:
Bus output that is paired with J1−13 to transmit vertical speed information to the
VSI/TRA.
J1−8 ±15 V dc POWER GROUND INPUT:
This pin is the ±15 V dc return from the VSI/TRA. It must be connected to the VSI/TRA.
Also see pins 5 and 11.
J1−11 −15 V dc POWER INPUT:
See pin 5.
J1−13 VERTICAL SPEED ARINC 429 (B) BUS OUTPUT:
See pin 7.