TT21 Transponder Installation Manual 19 January 2009
00560-00 Issue AA
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5.7 TC20 CONTROLLER ELECTRICAL CONNECTIONS ....................................................................10
5.7.1 TC20 Interface - Pinout..................................................................................................10
5.8 TC20 CONTROLLER INTERFACE DETAILS................................................................................10
5.8.1 TMAP Bus.......................................................................................................................10
5.8.2 Altitude Out ....................................................................................................................11
5.8.3 Remote ON......................................................................................................................11
5.8.4 Power..............................................................................................................................11
5.9 DCONNECTOR CRIMP TERMINALS..........................................................................................11
5.10 WIRING CONSIDERATIONS.......................................................................................................11
5.11 ANTENNA INSTALLATION........................................................................................................12
5.11.1 Antenna Ground Plane...................................................................................................12
5.11.2 Antenna Cable ................................................................................................................ 12
5.11.3 TNC Connector...............................................................................................................14
5.12 STATIC PRESSURE CONNECTION..............................................................................................14
6. INSTALLATION SETUP AND TEST.......................................................................................16
6.1 CONFIGURATION ITEMS...........................................................................................................16
6.1.1 Aircraft Address Programming ......................................................................................16
6.1.2 VFR Squawk Code..........................................................................................................16
6.1.3 VFR Flight ID.................................................................................................................16
6.1.4 Airspeed Category..........................................................................................................17
6.1.5 Aircraft Category............................................................................................................17
6.1.6 Squat Switch Source .......................................................................................................17
6.1.7 GPS Input .......................................................................................................................17
6.1.8 GPS Line Speed..............................................................................................................17
6.1.9 GPS System Integrity Level ............................................................................................17
6.1.10 Aircraft Length and Width..............................................................................................17
6.1.11 ADS-B Test Message Options.........................................................................................18
6.2 TEST AND CALIBRATION ITEMS ...............................................................................................18
6.2.1 Voltage Check.................................................................................................................18
6.2.2 Altitude Encoder Calibration .........................................................................................18
7. POST INSTALLATION CHECKS............................................................................................20
8. NORMAL OPERATION.............................................................................................................21
8.1 OVERVIEW...............................................................................................................................21
8.2 DISPLAY..................................................................................................................................21
8.3 MODE SELECTOR KNOB ..........................................................................................................21
8.4 PUSH BUTTONS........................................................................................................................21
8.5 CODE SELECTOR KNOB ...........................................................................................................22
ii Trig Avionics Limited
