EMS Technologies Canada Ltd. HSD-400 Manuale Utente

The fault definitions that appear in the HSD-400 terminal Maintenance Menu logs are 
based directly on the cause code definitions provided by INMARSAT. Appendix F: 
Inmarsat Cause Codes on page F-1 defines the maintenance port menu fault codes 
of the HSD-400 terminal.

Perform all test procedures presented in this section to test the total operational status of 
the HSD-400 terminal. Conduct these operational tests for all terminals returned to service 
after repair.

The procedures assume that the technical personnel are familiar with the test equipment 
used and can operate the equipment to produce the required inputs and obtain the 
required results. Refer to the detailed operating procedures and descriptions of the 
HSD-400 terminal Maintenance Port Utility (MPU) included in this section.

CAUTION:  ONLY AUTHORIZED TECHNICAL PERSONNEL, TRAINED IN GENERAL 

AVIATION WORKMANSHIP, THAT HAVE A BASIC UNDERSTANDING OF 
SATCOM SYSTEMS, SHOULD PROCEED WITH THE OPERATIONAL 
AND DIAGNOSTIC TEST PROCEDURES PRESENTED IN THIS MANUAL.

CAUTION:  CHANGES TO SOME MENU FUNCTIONS MAY SERIOUSLY DEGRADE 

SYSTEM OPERATION.

Note: This manual describes the basic MPU functions, menus, and reports required 

for the testing and fault isolation procedures presented in this section. Please 
consult EMS SATCOM support personnel before entering any unfamiliar 
menu selections not described in this manual.

Note: Using a terminal emulation program, open a log file and save all test results 

for future reference and test records.

Note: The procedures presented in this section aid technical personnel in 

upgrading, maintaining, or troubleshooting an HSD-400 terminal. 
Maintenance does not imply lubrication or adjustment activities.

Refer to the Outline and Installation Diagrams and Interconnection and Contact 
Assignment Drawings in the Installation section of this manual for additional 
information.

(Call orig)

Call originating from MES (mobile) or from a fixed location.

(Call type)

Call types (for example: speech)