A.1
A.2
GPS ANTENNA ------------------------------------------------------------------------------------ A-3
APPENDIX B - Serial Interface Specification
B.1
INTRODUCTION ----------------------------------------------------------------------------------- B-1
B.2
B.2.1
RS-422 ----------------------------------------------------------------------------------------------- B-1
B.2.2
RS-232 ----------------------------------------------------------------------------------------------- B-1
B.2.3
RS-423 ----------------------------------------------------------------------------------------------- B-1
B.3
B.4
B.5
RECEIVE PORTS --------------------------------------------------------------------------------- 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
B.6
TRANSMIT PORTS ------------------------------------------------------------------------------- B-7
B.6.1
Configuration --------------------------------------------------------------------------------------- B-7
B.6.2
B.6.3
B.6.4
X0 and X1 Formats ------------------------------------------------------------------------------ B-13
B.6.5
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
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
C.2.9
Digital Data Bus ----------------------------------------------------------------------------------- C-10
APPENDIX E - Local Geodetic Reference Datums
Revision E
May 31, 2006
FreeFlight 2101 I/O Approach Plus GPS Navigation System
Page iii
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