INSTALLATION MANUAL
CMA-5024 GLSSU
This document includes Proprietary Information and shall not be reproduced or communicated to third party
without prior written permission by CMC Electronics Inc.
Page A.17
November 21, 2008
The ARINC 429 Broadcast Message Protocol complies with the ARINC method 755-3, section 7.2.6,
for transferring FAS Data. Note however that the description in ARINC 755-3 pre-dates the inclusion of
the HAL and VAL parameters in the SBAS FAS; refer to Appendix G for an example of SBAS FAS
block data generation. The application message transmission will be a continuous transmission of
ARINC 429 labels and will terminate when the message block is complete. The application data
transmissions will be comprised of one or multiple concatenated message blocks. Each message block
will consist of a Message Header, a variable length Message and a CRC. Each message block
contains a CRC, which should be used to validate the data.
The lateral proportional deviation output label is scaled as follows:
Note: Full Scale Deflection (angular and linear scaling) corresponds to 0.155 DDM.
The vertical proportional deviation output label is scaled as follows:
Note: Full Scale Deflection (angular scaling) corresponds to 0.175 DDM.
The document reference is online, please check the correspondence between the online documentation and the printed version.
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