Honeywell International Inc. 9PGTPL-100A 사용자 설명서

Page 53

1 Mar 2006

TPL-100A Processor / Part No. 940-0530-001

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The Mode S transponder is discussed in this manual to an extent required to understand 
overall TCAS operation. For additional information refer to the applicable Mode S 
transponder system maintenance manual.

The microprocessor-based Mode S transponder has the functions that follow:

(1) Automatically transmits 1090-MHz Mode S squitter messages every second. These 

squitter messages notify other TCAS equipped aircraft and ground stations that own 
Mode S equipped aircraft is present.

(2) Receives broadcast messages from other TCAS equipped aircraft and notifies own 

MILACAS-FR Processor that a broadcast message was received.

(3) Replies to 1030-MHz Mode S interrogations from other TCAS equipped aircraft.

(4) Replies to 1030-MHz Mode A, Mode C, and Mode S interrogations from ATC ground 

stations with a 1090-MHz message in the traditional manner.

(5) Transmits 1090-MHz resolution advisory air-to-air coordination message data 

(received from the MILACAS-FR Processor) during threat conditions between own and 
other TCAS equipped aircraft.

(6) Provides the data that follows to the MILACAS-FR Processor through an ARINC 429 

data link:

•

Own aircraft identification code, pressure altitude, and maximum airspeed data

•

TCAS broadcast information and air-to-air resolution advisory coordination 
information received from other TCAS equipped aircraft

•

TCAS sensitivity level and other mode control data received by own Mode S 
transponder from own transponder/TCAS control unit

•

TCAS sensitivity level control data from Mode S ground control stations at 
1030-MHz (future application)

•

Mode S ARINC 604 maintenance status.

(7) Receives TCAS capability, TCAS validity, sensitivity level, and TCAS coordination 

update data from the MILACAS-FR Processor over the ARINC 429 data link. The 
Mode S transponder inserts this data into 1090-MHz coordination messages (and 
replies to interrogations from Mode S ground stations - future application).