User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 4−50
15 Dec 2005
Table 4−8. XS−950 Data Link Transponder Interface Descriptions (cont)
Connector Pin
Designation
Functional Description
P1C−9 FAN RETURN (NO): (−)
See pin P1C−6.
P1C−10 XPDR +28 V dc INPUT POWER: (H)
This pin along with the +28 V dc RETURN line (P1C−3) provide the 28 V dc power
requirements for the transponder.
NOTE: Only −55XXX thru −99XXX transponders accept 28 V dc input power. If the 28
V dc version is used, the power should be connected through an 8 amp circuit
breaker, and the pins for the 115 V ac input (P1C−1 and P1C−7) should be left
unconnected.
P1C−11 CHASSIS GROUND INPUT:
Connect to aircraft frame.
P1C−12,
P1C−13
MUTUAL SUPPRESSION BUS INPUT/OUTPUT:
L−Band suppression coax must be RG−142 or equivalent coaxial cable. P1C−12 and
P1C−13 are connected internally. Connection to only one pin is required.
The Interface descriptions that follow are for the 53−pin ARINC 615 Portable Data Loader connector
J1 mounted on the front panel of the transponder. These descriptions are used to make up the
cable that is used to interface between the transponder and the ARINC 615 Data Loader or a
RS−232 PC Serial Port.
J1−1, 2 XPDR ARINC 429 PDL BUS INPUT: (J1−1 [A], J1−2 [B])
This differential pair input is a high speed ARINC 429 bus (100K bits/second nominal) is
used to input data from the data loader to the transponder. The standards for this
interface are defined in ARINC 615 “Airborne Computer High Speed Data Loader”.
These pins should be connected to pins 1 and 2 of the PDL cable interface.
J1−5 INPUT BUS SHIELD:
The shields from the input bus (J1−1, 2) should be connected to this pin.
J1−8, 9 XPDR ARINC 429 PDL BUS OUTPUT: (J1−8 [A], J1−9 [B])
This differential pair output is a high speed ARINC 429 bus (100K bits/second nominal)
used to output data from the transponder to the data loader. The standards for this
interface are defined in ARINC 615 “Airborne Computer High Speed Data Loader”.
These pins should be connected to pins 8 and 9 of the PDL cable interface.
J1−16 OUTPUT BUS SHIELD:
The shields from the output bus (J1−8, 9) should be connected to this pin.
J1−18 PDL LINK A:
Connect this pin to pin 18 of the PDL cable interface.
J1−19 PDL LINK B:
Connect this pin to pin 19 of the PDL cable interface.