Trig Avionics TT26 Installation Manual

Installation Manual 01633-00-AC 24 January 2017 Trig Avionics Limited Heriot Watt Research Park Riccarton, Edinburgh EH14 4AP Scotland, UK Copyright Trig Avionics Limited, 2016 all-guides com ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited i CONTENTS 1. PREFACE ...............................................................................................4 1.1 PURPOSE ...........................................................................................4 1.2 SCOPE ...............................................................................................4 1.3 CHA ...

24 January 2017 01633-00 Issue AC ______________________ ii Trig Avionics Limited 5.4 TT26 TRANSPONDER ELECTRICAL CONNECTIONS ..........................12 5.4.1 TT26 Interface – Pinout .........................................................13 5.5 TT26 TRANSPONDER INTERFACE DETAILS .....................................14 5.5.1 Power Input ......................................................................... ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited iii 6.2 INTERFACE CONFIGURATION ...........................................................20 6.2.1 Altimetry Source .....................................................................20 6.2.2 GPS Source ............................................................................21 7. POST INSTALLATION CHECKS ......................... ...

24 January 2017 01633-00 Issue AC ______________________ 4 Trig Avionics Limited 1. Preface 1.1 Purpose This manual describes the physical and electrical characteristics and the installation requirements for a TT26 ADS-B transponder. 1.2 Scope This document applies to the installation of the TT26 ADS-B Transponder. At the publication date of this manual the software version identifier for the TT26 is 1.6 and the F ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited 5 2. Introduction 2.1 TT26 Description The TT26 ADS-B transponder system is an ED-73E compliant Mode S level 2els datalink transponder, with support for ADS-B extended squitter, elementary surveillance and SI codes, which also meets the relevant environmental requirements of ED-14G. The TT26 has a nominal power output of 250 watts, and ...

24 January 2017 01633-00 Issue AC ______________________ 6 Trig Avionics Limited connector and a static pressure connector. The 25 way D-type interface provides the following services: Power Input The TT26 operates on 11 to 33 volts DC. Controller Datalink A two wire data link is used to connect the TT26 and the controller. Depending on TT26 option, this interface can be provided over a half-duplex RS-485 interf ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited 7 3. Technical Specifications 3.1 TT26 Transponder Unit (01629-00) Specification Characteristics Compliance ETSO C112e Class 1 Level 2els, ETSO C166b A2 Class B1S, ETSO C10b, ETSO C88b, ETSO C145c Class Beta 1 FCC Identification VZI01629 Applicable documents EUROCAE ED-73E, EUROCAE ED-14G (RTCA DO-160G), RTCA DO-181E, RTCA DO-260B, AS80 ...

24 January 2017 01633-00 Issue AC ______________________ 8 Trig Avionics Limited Physical Specifications (including connectors) Height 62 mm (2.44”) Width 71.5 mm (2.81”) Length 153 mm (6.02”) Weight 475 g (1.05 lbs) 3.2 Installation Approval The conditions and tests required for the TSO approval of the TT26 are minimum performance standards. It is the responsibility of those desiring to install this transp ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited 9 4. Unit and Accessories supplied 4.1 TT26 ADS-B Transponder Items The TT26 includes the following items: Unit Description Qty Part Number TT26 Mode S Transponder 1 01629-00 4.2 Installation Kit The optional TT26 installation kit includes the following items: Unit Description Qty Part Number Connector, coaxial TNC 1 00723-00 Headshell, ...

24 January 2017 01633-00 Issue AC ______________________ 10 Trig Avionics Limited  Fixings. To mount the transponder body directly using the tapped holes you will need three M4 bolts. ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited 11 5. Installation 5.1 Unpacking and Inspecting Equipment Carefully unpack the transponder and make a visual inspection of the unit for evidence of any damage incurred during shipment. If the unit is damaged, notify the shipping company to file a claim for the damage. To justify your claim, save the original shipping container and all p ...

24 January 2017 01633-00 Issue AC ______________________ 12 Trig Avionics Limited 5.3 Cooling Requirements The TT26 ADS-B transponder meets all applicable ETSO requirements without forced air-cooling. Attention should however be given to the incorporation of cooling provisions to limit the maximum operating temperature if the TT26 is installed in close proximity to other avionics. The reliability of equipment oper ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited 13 5.4.1 TT26 Interface – Pinout Pin Signal Direction 1 Ground - 2 TMAP1A Bidirectional 3 TMAP1B Bidirectional 4 Ground - 5 RS-232 Aux Input 6 Ground - 7 RS-232 Aux Output 8 TMAP2A Bidirectional 9 TMAP2B Bidirectional 10 Ground - 11 Auxiliary Power Output 12 Ground - 13 Not Connected 14 Ground - 15 11-33 VDC Power Input 16 Reserved - ...

24 January 2017 01633-00 Issue AC ______________________ 14 Trig Avionics Limited The following diagram shows the connector orientation as viewed from the wiring side. 5.5 TT26 Transponder Interface Details 5.5.1 Power Input The power supply can be 11-33 volts DC; no voltage adjustment is required. Use a 3 Amp (or greater) circuit breaker for power supply protection to the TT26. It is always good practice to use m ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited 15 5.5.2.1 TMAP over RS-485 Bus Each TMAP RS485 interface comprises a balanced pair of signals, called A and B, both of which must be connected for communication to work. There are two sets of TMAP pins on the TT26, TMAP1 A and B, and TMAP2 A and B. This is to support future installation wiring options. The two sets are identical, and ...

24 January 2017 01633-00 Issue AC ______________________ 16 Trig Avionics Limited 5.5.5 Squat Switch Input The Squat switch input allows the transponder to automatically switch between Airborne and Ground modes, and affects both the Mode S reply behaviour and the ADS-B reporting behaviour. The input will be asserted when the voltage to ground is pulled below approximately 4 volts. The logical sense of the input ...

24 January 2017 01633-00 Issue AC ______________________ Trig Avionics Limited 17 compliant, so the combination will crimp the supplied connectors. Once crimped, the contacts should be slotted into the rear of the connector shell. Push the contact in until the retaining tab clicks into place. Tug gently to confirm the contact is locked in place. 5.7 Wiring Considerations The connection from the TT26 transponder ...

24 January 2017 01633-00 Issue AC ______________________ 18 Trig Avionics Limited connectors should be less than 10dB. 5.10 Transponder Antenna The TT26 is compatible with any transponder antenna approved to ETSO or TSO C74 or C112. 5.11 Transponder Antenna Cable A low loss cable terminating at the transponder in a TNC connector is required. The TT26 is designed to meet Class 1 requirements with an allowance of 2 ...