TT31 Transponder Installation Manual
8 May 2017
00455-00
Issue AQ
______________________
Page 6
Trig Avionics Limited
4. Unit and Accessories supplied
4.1 TT31 Mode S Transponder Items
Your TT31 Mode S transponder includes the following items:
Unit Description
Qty
Part Number
TT31 Mode S Transponder
1
00220-00-01
TT31 Mounting Tray
1
00231-00
TT31 Documentation Kit
1
00233-00
TT31 Installation Kit
1
00223-00
4.2 Installation Kit
Your TT31 installation kit includes the following items:
Unit Description
Qty
Part Number
12 way double sided crimp housing
connector
1
00032-00
24 way double sided crimp housing
connector
1
00033-00
Crimp Terminal, Female, 18-24 AWG
30
00236-00
Screw, Pozidrive, Pan Head M3x12mm lg
4
00422-00
Connector Co-axial Panel Mount Right
Angle Blind Mate
1
00239-00
Circlip 7/16” External
1
00242-00
Washer 7/16” Plain, Stainless Steel
1
00241-00
Washer 7/16” Crinkle, Beryllium Copper
1
00317-00
4.3 Documentation Kit
Your TT31 documentation kit includes the following items:
Unit Description
Qty
Part Number
TT31 Transponder Installation Manual
1
00455-00
TT31 Pilots Operating Manual
1
00454-00
4.4 Required Items
Additional items you will require, but which are not in the TT31 package, include:
•
Antenna and fixing hardware. The TT31 is compatible with any transponder antenna
approved to (E)TSO C74 or C112.
•
Altitude encoder. You require an encoding altimeter or a blind encoder with either parallel
Gray code or RS232 serial output. For best results, and simpler installation, an encoder with a
serial output is recommended.
•
Cables. You need to supply and fabricate all required cables. Guidance on cable types is
given in section 5 below.
•
Fixings. To secure the transponder tray to the airframe you will need at least 6 flat head
screws and six self-locking nuts. If the aircraft does not have existing mounting provisions