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.2
November 21, 2008
Note: This label outputs a Ground Speed computed as the absolute value of the Range Rate and
is therefore always positive.
1.3 Label 017 - Selected Runway Heading - Input/Output
ARINC BIT DESCRIPTION SETTING
32 Parity Odd
31-30 SSM Normal Operation = 00
No Computed Data = 01
Functional Test = 10
Not Used = 11
29 Spare = 0
28 - 27 Hundreds (degrees) 0 - 3
26 - 23 Tens (degrees) 0 - 9
22 - 19 Ones (degrees) 0 - 9
18 - 15 Tenths (degree) 0 - 9
14 - 11 Padding = 0
10 - 9 SDI Not Used = 00
Unit 1 = 01
Unit 2 = 10
Unit 3 = 11
8-1 Octal Label 017
1.4 Label 033 - Landing System Mode/Frequency - Input/Output
ARINC BIT DESCRIPTION SETTING NOTE
32 Parity Odd
31-30 SSM
Normal Operation = 00
No Computed Data = 01
Functional Test = 10
Not Used = 11
29 - 15 GLS Channel Number
(15 least significant bits) /
ILS/VOR Frequency
(b)
14 - 13 Mode
ILS = 00
GLS = 01
Reserved = 10
Reserved = 11
(a)
12 - 11 GLS Channel Number
(2 most significant bits)
(b)
10 - 9 SDI
All Call = 00
Unit 1 = 01
Unit 2 = 10
Unit 3 = 11
8-1 Octal Label 033
(a) The mode is set to 'GLS' on the GLS busses, and 'ILS' on the ILS Look-Alike busses.
(b) The GLS Channel number is an unsigned 17-bit binary number. When the label contains an ILS or
VOR frequency, it uses the same BCD encoding as label 034. The frequency is as per the Look-
Alike ILS/VOR Frequency APD parameter when the GLSSU generates the label.
The document reference is online, please check the correspondence between the online documentation and the printed version.
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