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Install Manual

ManualsBrandsL-3 Communications, Avionics Systems ManualsElectronicsTRC899
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Preliminary
SKY899
Installation Manual
2-23
Rev. A
2.9 ARINC-429
The ARINC-429 interface can be divided into four sections: general sensor inputs, mode S transponder
input/output, alternate display output and future input/output options. The TRC has seven receive
channels and three transmit channels that are used to accomplish the various interfaces. However, two
receiver and two transmitter channels are not used at this time (future option). ARINC-429 labels
accepted and transmitted are listed in tables A-3 and A-4.
2.9.1 General Sensor Inputs
The TRC can use four general sensor inputs: barometric altimeter, radio altimeter, magnetic heading, and
GPS navigation data. Five receive channels have been designated for these inputs and will allow various
combinations of speed and equipment types. It is also possible for multiple data inputs (barometric
altimeter, radio altimeter, magnetic heading and GPS navigation) from one source to be received on one
channel (e.g., ARINC-429 superbus). Receiver speed and equipment type must be set via the service menu.
When planning the ARINC-429 interface note the following:
NOTES
1. The data rate for RX channels 1 and 2 must be set to the same speed
(12.5 or 100 kHz).
2. The data rate for RX channels 3 and 4 must be set to the same speed
(12.5 or 100 kHz).
3. The data rate for channel 5 is independent of the other receivers.
Channel 5 can be set to 12.5 or 100 kHz.
ARINC-429 General Sensor Input connections:
A429RX1_A (P1-54)
A429RX1_B (P1-55)
A429RX2_A (P1-62)
A429RX2_B (P1-63)
A429RX3_A (P1-64)
A429RX3_B (P1-65)
A429RX4_A (P1-73)
A429RX4_B (P1-74)
A429RX5_A (P1-75)
A429RX5_B (P1-76)
2.9.2 Mode S Transponder I/O (future option)
The TRC has one receive and one transmit channel designated for the mode S transponder XT & TX bus
interface. The receiver and transmit speed is fixed at 100 kHz. This is a future option, do not connect at
this time.
Mode S Transponder XT bus connections:
A429RX7_A (P1-83)
A429RX7_B (P1-84)
Mode S Transponder TX bus connections:
A429TX2_A (P1-44)
A429TX2_B (P1-45)