TT31 Transponder Installation Manual 8 May 2017
00455-00 Issue AQ
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ii Trig Avionics Limited
5.7.3 Mutual Suppression ........................................................................................................15
5.7.4 Serial Port Options.........................................................................................................15
5.7.5 Altitude Inputs and Output..............................................................................................15
5.7.6 Squat Switch Input..........................................................................................................16
5.7.7 Ident Switch Input...........................................................................................................16
5.7.8 External Standby Input ...................................................................................................16
5.7.9 Audio Output................................................................................................................... 16
5.7.10 Audio Mute Input............................................................................................................ 16
5.7.11 Altitude Alerter Output ...................................................................................................17
5.7.12 GPS Position Input .........................................................................................................17
5.7.13 TIS Traffic Output...........................................................................................................17
6. INSTALLATION SETUP AND TEST.......................................................................................18
6.1 CONFIGURATION ITEMS...........................................................................................................18
6.1.1 Aircraft Registration (VFR Flight ID)............................................................................18
6.1.2 Aircraft Address Programming ...................................................................................... 18
6.1.3 VFR Squawk Code..........................................................................................................19
6.1.4 Airspeed Category.......................................................................................................... 19
6.1.5 Aircraft Category............................................................................................................19
6.1.6 Squat Switch Source .......................................................................................................19
6.1.7 ARINC TIS Output..........................................................................................................19
6.1.8 RS232 Input/Output ........................................................................................................19
6.1.9 ADS-B Configuration......................................................................................................20
6.1.10 Audio Volume .................................................................................................................21
6.1.11 LCD Dim Point...............................................................................................................21
6.1.12 LCD Brightness Curve.................................................................................................... 21
6.2 TEST ITEMS.............................................................................................................................. 21
6.2.1 Interface Check............................................................................................................... 21
6.2.2 Altitude Check.................................................................................................................22
6.2.3 Lighting Bus.................................................................................................................... 22
6.2.4 Temperature.................................................................................................................... 22
6.2.5 RS232 Input Check .........................................................................................................22
6.2.6 Transponder Cycles........................................................................................................ 22
7. POST INSTALLATION CHECKS ............................................................................................23
7.1 AUTOMATIC AIR/GROUND CONSIDERATIONS .........................................................................23
8. NORMAL OPERATION.............................................................................................................24
8.1 OVERVIEW ..............................................................................................................................24
8.2 DISPLAY.................................................................................................................................. 24
8.3 MODE SELECTOR KNOB ..........................................................................................................24
8.4 PUSH BUTTONS .......................................................................................................................25
