
Page iii
Revision E
May 31, 2006
FreeFlight 2101 I/O Approach Plus GPS Navigation System
APPENDIX A - RTCA/DO-160 Environmental Qualification Forms
A.1 RECEIVER/DISPLAYUNIT--------------------------------------------------------------------- A-1
A.2 GPSANTENNA------------------------------------------------------------------------------------ A-3
APPENDIX B - Serial Interface Specification
B.1 INTRODUCTION ----------------------------------------------------------------------------------- B-1
B.2 BASICCOMMUNICATIONPROTOCOLDESCRIPTIONS ------------------------------ B-1
B.2.1 RS-422----------------------------------------------------------------------------------------------- B-1
B.2.2 RS-232----------------------------------------------------------------------------------------------- B-1
B.2.3 RS-423----------------------------------------------------------------------------------------------- B-1
B.3 CONNECTORPINASSIGNMENTS ---------------------------------------------------------- B-2
B.4 SOFTWARECONFIGURATIONOFSERIALPORTS------------------------------------ B-3
B.5 RECEIVEPORTS--------------------------------------------------------------------------------- B-3
B.5.1 Configuration--------------------------------------------------------------------------------------- B-3
B.5.2 Encoder Data Format ---------------------------------------------------------------------------- B-3
B.5.3 RMI Data Format ---------------------------------------------------------------------------------- B-4
B.5.4 Air Data Computer Format---------------------------------------------------------------------- B-5
B.6 TRANSMITPORTS------------------------------------------------------------------------------- B-7
B.6.1 Configuration--------------------------------------------------------------------------------------- B-7
B.6.2 R0 and R1 Data Formats ----------------------------------------------------------------------- B-7
B.6.3 K0 and K1 Data Formats -----------------------------------------------------------------------B-10
B.6.4 X0 and X1 Formats ------------------------------------------------------------------------------B-13
B.6.5 Data Output Format Example -----------------------------------------------------------------B-17
APPENDIX C - External Inputs and Outputs
C.1 EXTERNAL INPUTS ----------------------------------------------------------------------------- C-1
C.1.1 Speed Inputs --------------------------------------------------------------------------------------- C-1
C.1.2 Heading Input -------------------------------------------------------------------------------------- C-3
C.1.3 Discrete Inputs ------------------------------------------------------------------------------------- C-3
C.1.4 Digital Data Inputs--------------------------------------------------------------------------------- C-4
C.2 SYSTEM OUTPUTS ----------------------------------------------------------------------------- C-5
C.2.1 Lateral Deviation (DC Crosstrack) (LT/RT) ------------------------------------------------- C-5
C.2.2 Nav Flag --------------------------------------------------------------------------------------------- C-5
C.2.3 TO/FROM ------------------------------------------------------------------------------------------- C-5
C.2.4 Steering ---------------------------------------------------------------------------------------------- C-6
C.2.5 Glideslope (UP/DN)------------------------------------------------------------------------------- C-6
C.2.6 Glideslope Flag ------------------------------------------------------------------------------------ C-6
C.2.7 Discretes--------------------------------------------------------------------------------------------- C-8
C.2.8 HSI #1, 2, and 3 Synchros ---------------------------------------------------------------------- C-9
C.2.9 Digital Data Bus-----------------------------------------------------------------------------------C-10
APPENDIX D - STCs and Flight Manual Supplements
APPENDIX E - Local Geodetic Reference Datums