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 3–62
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
(e) Antenna Subsystem RF Interface – Multi-Channel
Several external RF parameters (such as cable losses and antenna gain), that
must be delimited to ensure proper operation, dictate the HSD performance
requirements.
Table 3–33 defines these parameters and their expected values.
(f) WOW Pin Wiring – Multi-Channel
These Weight-On-Wheel (WOW) discretes are wired only if equivalent
information is not strapped as being available to the SDU on an ARINC 429 input
[for example, IRS or the Centralized Fault Display System (CFDS)].
WOW wiring, for the HSD, is optional for system operation as the HSD already
receives speed information for Doppler correction. However, if WOW wiring is
not wired, normal maintenance must be disabled when speed or Doppler
readings are greater than zero.
The WOW1 and WOW2 pins are either left open circuit or they are connected to
the airframe DC ground. The WOW Program Select (PGM) pin is either left open
circuit or is connected to the Forward Address Common. The three ground states,
defined for any pin are:
• OPN: Open circuit
• AFG: Airframe DC Ground
• FAC: Fwd Address Common (TP7K)
Resolve any conflict between WOW1 and WOW2 by assuming the aircraft is
“in-air.” The interpretation of the state of the WOW1 and WOW2 pins is defined
by the state of the WOW program select pin. Refer to
Table 3–34 for details.
1. Multi-Channel Configurations
Labeled as WOW1, WOW2, and WOW Program Select, these discretes are
wired only if equivalent information is not strapped as being available to the
SDU on an ARINC 429 input [for example, IRS or the Centralized Fault
Display System (CFDS)].
Table 3–33. RF Parameters Definition – Multi-Channel
Parameter Min. Value (dB) Max. Value (dB)
Antenna Gain 8 17
Antenna—DLNA Loss 0.1 0.3
DLNA Gain 53 60
DLNA Noise Figure 1.5 1.8
DLNA—HSD-128 (BP12), including
cables and splitter (Rx) Total Loss
019
DLNA—HSD-X (BP5), including
cables and splitter (Rx) Total Loss
524
HSD-128—Antenna (Tx) Loss 1 2.5
DLNA Insertion Loss (Tx to Antenna
Port)
–0.8