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 C.9
November 21, 2008
1.15 Label 130 - Autonomous HIL - Input/Output
ARINC BIT DESCRIPTION SETTING
32 Parity Odd
31-30 Sign Status Matrix (SSM) Failure Warning = 00
No Computed Data = 01
Functional Test = 10
Normal Operation = 11
29 Sign bit = 0 (positive)
28-12 Limit (in NM)
0-16 (LSB weight ≅1.22E-4)
11 Detection Bit No failure = 0
satellite failure = 1
10-9 Source/Destination Identifier Not used = 00
Unit 1 = 01
Unit 2 = 10
Unit 3 = 11
8-1 Octal Label 130
1.16 Label 143 - Approach Area HIL - Output
ARINC BIT DESCRIPTION SETTING
32 Parity Odd
31-30 Sign Status Matrix (SSM) Failure Warning = 00
No Computed Data = 01
Functional Test = 10
Normal Operation = 11
29 Sign bit = 0 (positive)
28-12 Limit (in nautical miles)
0-16 (LSB weight ≅1.22E-4)
11 Integrity Algorithm SBAS Integrity Prediction = 0
Look-Ahead RAIM = 1
10-9 Source/Destination Identifier Not Used = 00
Unit 1 = 01
Unit 2 = 10
Unit 3 = 11
8-1 Octal Label 143
Note: The setting of bit 11 to 1 when outputting the RAIM Integrity corresponds to the legacy encoding
for a prediction where baro-corrected altitude is not applied. A prediction that includes baro-
corrected altitude is not available. The GPS bus always sets bit 11 to 1. The GLS bus can
provide SBAS Integrity Prediction (bit 11 to 0) as requested by the APD; refer to Appendix D.
The document reference is online, please check the correspondence between the online documentation and the printed version.
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