User's Manual
Table Of Contents
- Introduction
- System Description
- 1. Purpose of Equipment
- 2. Equipment Covered
- 3. Equipment Description
- A. Applicable Documents
- B. Reference Documents
- C. Equipment Specifications
- D. Mechanical Description
- E. Electrical Description
- F. System Interface Descriptions
- G. User Interfaces
- (1) Stand-Alone Mode User Interfaces
- (2) Collins Cooperative Mode User Interfaces
- (3) Honeywell Combined Mode User Interfaces
- (4) Selective Mode User Interfaces
- (5) Multi-Channel Configurations
- (6) ISDN Circuit-Switched Data Interface
- (7) RS-232 Interface
- (8) Ethernet Data Interface
- (9) ISDN S/T Interface
- (10) Maintenance Port Interface
- H. Initiated-Self-Test
- I. Owner Requirements Table
- 4. Inmarsat System Overview
- 5. HSD Modes and Configuration Descriptions
- System Operation
- 1. Introduction
- 2. Activating HSD Transceivers
- 3. Configuring HSD Systems
- 4. Using the HSD System
- Installation
- 1. Introduction
- 2. Advisories
- 3. Pre-Installation Inspection
- 4. Unpacking and Inspecting Equipment
- 5. Cabling and Connector Requirements
- 6. ARINC 600 Trays and Connectors
- 7. Mechanical Installation
- 8. Electrical Installation
- 9. Outline/Installation and Interconnection/Contact Assignment Diagrams
- Test and Fault Isolation
- 1. Introduction
- 2. Operational and Diagnostic Testing
- 3. Troubleshooting and Fault Isolation
- 4. Adjustment/Alignment Procedures
- 5. Modification History
- Maintenance and Repair
- 1. General
- 2. Maintenance
- 3. Repair
- 4. Instructions for Continued Airworthiness, FAR 25.1529
- Appendix A: Inmarsat Satellite Beam Coverage
- Appendix B: Troubleshooting Checklist
- Appendix C: RJ-45 Cable Termination Details
- Appendix D: Installation Checklist
- Appendix E: Record of Accomplishment
- Appendix F: RF Splitter
Page 4–101
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
D. Fault Isolation and Diagnostic Procedures
This section provides basic information required for technical personnel to isolate faults
in HSD and HSD-X transceivers. Where needed, refer to other sections of this manual
(which contain important information to aid in understanding the functionality of the unit) for
additional information.
Fault isolation procedures are usually conducted on equipment that falls within one of the
following categories:
• Units that have failed to pass operational and installation verification procedures
• Units that have failed during service
• Units repaired and returned to service
Maintenance reports are helpful in troubleshooting the HSD system. Capturing
maintenance port information from the HSD or HSD-X transceiver and forwarding the file
to EMS SATCOM technical support staff will assist in troubleshooting suspected HSD
system problems. Instructions on how to activate and save “reports” information is
provided in the next section.
No dial tone
heard in
handset
– – • Confirm ISDN lines are
wired correctly.
• Verify handset connection
is secure.
• Wait a few minutes for the
system to warm-up, then
log-on and try your call
again.
• Check that IRS data is
available.
• Verify that the unit has
completed beam
registration.
Call drops
after
successful
connection
If the RF signal fades
significantly (during a call)
the connection may drop
Note: A sudden, severe
aircraft banking angle may
obstruct the signal
Activate report 21
and 23
• Check signal strength
(C/No ≥ 50 dB).
• Ensure there is a clear,
un-obstructed,
line-of-sight to the satellite.
• Select an alternate satellite
or beam and try your call
again (Note: works if you
are located where more
than one beam overlaps or
satellite is
in-view).
Table 4–27. Troubleshooting and Fault Isolation
Fault Description
Maintenance
Report
Check