SYSTEM DESCRIPTION AND INSTALLATION MANUAL
HS--600 High Speed Data System
23--20--31
30 May 2002
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Page 1--3
(7) The DLT configuration settings remain in effect indefinitely, unless subsequently
manually changed or a factory settings restart is performed. If the SDU in conjunction
with the HSD system is replaced for any reason, the replacement SDU will require its
DLT port to be configured appropriately.
(8) The HSD system controls its HPA through the HPA’s commissioning and
maintenance terminal (CMT) RS--232 input port (HSU to HPA transmit only),
dynamically controlling the transmit RF carrier on/off state as well as the HPA’s
backoff state.
B. Aero--H/H+
(1) Aero--H/H+ is a multi--channel aeronautical system that can operate in both the
Inmarsat--3 global and spot beams using either a fuselage-- or tail--mounted HGA.
The type of antenna and the global/spot beam operation identify the type of service
possible as given in Table 1-3.
Table 1-3. Type of Service
Aero
Type
Antenna
Global
Beam
Spot
Beam
Voice
9.6
kbps
Voice
4.8
kbps
Secure
Voice 4.8
kbps
Fax
(max)
PC Data
(max)
Packet
Mode
Data
(max)
Aero--H
High gain
Yes
No
Yes
No
Yes
4.8 kbps
2.4 kbps
10.5 kbps
Aero--H+ High gain
Yes
Yes
Yes
Yes
Yes
4.8/2.4
kbps
2.4 kbps
10.5 kbps
(2) When used within the spot beams, Aero--H+ voice and data rates are lower.
Therefore, it requires less power so that call charges are reduced. All
Honeywell/Thales aeronautical equipment complies with the International Civil
Aviation Organization (ICAO) Agency of the UN requirements for aeronautical safety
services. The equipment can be used for communication, navigation, and
surveillance/air traffic management (CNS/ATM).
C. Inmarsat High Speed Systems
(1) Aero M4 circuit--mode service provides data rates of up to 64 kbps. M4 land earth
stations (LES) serve as gateways to the Public Switched Telephone Network (PSTN)
or the ISDN.
(2) M4 is a companion to, but not a replacement for, an Aero--H system. As
developments of the Mini--M, they do not comply with the ICAO requirements for
aeronautical safety services and cannot be used for CNS/ATM. In other words, they
can only be used for non--safety service data communications.
Содержание HS-600
Страница 15: ...CONTENTS ...
Страница 22: ...INTRODUCTION ...
Страница 27: ...SYSTEMS DESCRIPTION AND OPERATION ...
Страница 42: ...MECHANICAL INSTALLATION ...
Страница 52: ...ELECTRICAL INSTALLATION ...
Страница 64: ...INSTALLATION CHECK ...
Страница 69: ...ADJUSTMENT TEST ...
Страница 78: ...FAULT ISOLATION ...
Страница 81: ...MAINTENANCE PRACTICES ...
Страница 86: ...APPENDIX A ...
Страница 97: ...APPENDIX B ...