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.24
Revision 1 Jan 19, 2009
Note 1: When the label is output by the GLSSU, this bit encodes the internal state of the last Enter/Exit SBAS
PA Mode command received. The SBAS PA mode will be entered or exited (as requested) when the
conditions for mode transition allow it.
Note 2: The service provider encoding is the same as that of the FAS Data Block except for 14. In input, the
field is ignored when an approach is selected; a value of 14 must be encoded in this field until it is used
to specify the SBAS PA mode service provider (this will cancel any previous selection). When output, a
value of 14 indicates that no SBAS PA mode service provider has been selected.
Note 3: When the label is output by the GLSSU, this field shows the currently applied SBAS PA Mode service
provider restriction, imposed by either the input label or the FAS Block.
1.40 Labels 306 & 307 - CRC 1 & 2 - Input/Output
ARINC BIT DESCRIPTION SETTING
32 Parity Odd
31-30 Sign Status Matrix (SSM) Normal Operation = 00
No Computed Data = 01
Functional Test = 10
Failure Warning = 11
29-14 CRC Value See Note
13-12 CRC Type Selected Approach FAS CRC = 00
Reserved = 01
Selected APD CRC = 10
Reserved = 11
11 CRC Available Not Available = 0
Available = 1
10-9 Source/Destination Identifier Not Used = 00
Unit 1 = 01
Unit 2 = 10
Unit 3 = 11
8-1 Octal Labels 306, 307 (configurable by APD)
Note: The CRC is a 32-bit CRC transmitted on two labels. Label 306 contains bits 0..15 and label 307
contains bits 16..31. The CRC Type cycles as follows: Selected Approach FAS CRC, Selected
APD CRC, Selected Approach FAS CRC, SBAS Approach DB CRC.
The document reference is online, please check the correspondence between the online documentation and the printed version.
To Next Page
Loading...
Need help?
General
