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 11
November 21, 2008
The GLSSU provides directly to the pilot, on the EDS in the case illustrated, the alert and flight deviation
data required for monitoring the aircraft operation.
Figure 5. Typical Class DELTA-4 dual GLSSU installation
(With DME/ILS look-alike busses; one side shown)
The auxiliary HIS 28 VDC power input line feeds directly the HIS in order to keep it functional in case of
failure of the GLSSU or of the main 28 VDC power input. In such cases, the DME/ILS data will pass-
through directly, provided the pilot selects an ILS Approach.
C. Single, Dual and triple installation and interface restrictions
The following restrictions and recommendations apply.
(i) Installation redundancy
The GLSSU can be used in single, dual or triple installations, with or without using the cross-talk
connections described in Appendix A.
In a dual installation, the cross-talk connections will allow to operate and control any GLSSU by
means of the Left or Right Controller Units. In a triple installation, the cross-talk connections will
allow to operate and control any GLSSU by means of the Left, Center or Right Controller Units.
The document reference is online, please check the correspondence between the online documentation and the printed version.
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