System Overview190-01499-02 GTX 3X5 Transponder TSO Installation ManualRev. 9 Page 1-151.14.1 Non-TSO FunctionsThe following are declared non-TSO functions, these non-TSO functions as defined in this manual have been evaluatedwith the TSO functions. The design data for these non-TSO functions has been accepted by the FAA when these non-TSO functions are installed in accordance with the guidance and limitations provided in this manual.The GTX 3X5 includes the following non-TSO functions.• TIS-A (GTX 335)• Wireless data conversion (Bluetooth interface) (GTX 345)1.14.2 Design Assurance LevelsTable 1-16 Software Design Assurance LevelsTable 1-17 Complex Hardware Design Assurance Levels[1] Developed to DO-178B level B equivalent process.System Function DO-178BLevelMode S transponder functionality CDisplay of TIS-A traffic data CFlight information data (FIS-B, including weather information) processing and output todisplay DDisplay of outside air temperature (static) CFlight timers C1090 ADS-B transmission C1090/UAT ADS-B reception BCorrelation of TCAS traffic with ADS-B, ADS-R, and TIS-B traffic BConflict Situational Awareness (CSA) including visual and aural alerts BExternal UAT ADS-B control CInternal GPS/SBAS BPressure sensor module CAltitude monitor/alerting CFlight ID CBluetooth output EHSDB packet forwarding BData concentrator CFunction DO-254Main board, transponder, and I/O CADS-B board, 978 MHz and 1090 MHz receivers CGPS receiver B [1]
