EMS Technologies Canada Ltd. HSD-X ユーザーズマニュアル

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18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
The rear connector complies with ARINC 600, shell size 1. The connector top and 
middle cavities have 60 number 22 interconnects, while the bottom cavity has two 
number 16 interconnects, one number 12 interconnect, and two RF interconnects.  
E. Electrical Description
This section describes the external electrical interfaces of the HSD and HSD-X 
transceivers. General system block diagrams of the avionics and antenna subsystem are 
presented in Figure 1–10, Figure 1–11, Figure 1–12, and Figure 1–13.
"Installation" on page 3-1 describes all ARNC 600 connector contact assignments and 
physical details, including part numbers, insert descriptions, and polarization keying.
The loading/gradient specifications for all HSD installation modes, including Stand-Alone 
Mode, Multi-Channel configurations with HSD-X transceivers, are provided in table format 
in "Installation" on page 3-1. These tables list all of the ARINC Top, Middle, and Bottom 
Plug pin designations as well as provide installation connection details.
(1) General 
The HSD contains a communications switch (SW) that supports Inmarsat Swift64 
Mobile ISDN and MPDS service within an 8-MCU assembly built in accordance to 
ARINC 600 specifications.
The HSD-X contains a communications switch (SW) that supports Inmarsat Swift64 
Mobile ISDN and MPDS service within a 2-MCU assembly built in accordance to 
ARINC 600 specifications.
(a) Stand-Alone Mode
The HSD L-Band Rx/Tx input and outputs interface directly with the DLNA. The 
HSD uses the ARINC 429 multi-control bus to interface with the ACU/BSU to 
control the RF antenna and obtain antenna-subsystem status information. The 
HSD receives the required navigational data, provided by the aircraft Inertial 
Navigational System (INS), from the ARINC 429 IRS bus. The aircraft supplies 
either 28 V dc or 115 V 400 Hz power to the HSD. 
(b) Non-Stand-Alone Modes (Cooperative, Combined, Selective)
The HSD L-band Rx/Tx interface combiners are shared with those of the 
SATCOM H/H+ system via splitters after the DLNA and before the high power 
amplifier (HPA). The Aero H/H+ system, that the HSD is installed with, controls 
the antenna subsystem and the RF transmit signal attenuation in the High-Gain 
Antenna HPA of the HSD through the SDU multi-control ARINC 429 bus. The 
aircraft supplies either 28 V dc or 115 V 400 Hz power to the HSD.
(c) Multi-Channel Configurations with HSD-X Transceivers
The HSD Multi-Channel configuration combines a dual-channel, Stand-Alone 
Mode, HSD-128 Transceiver with one or more single-channel HSD-X 
Transceivers to add additional channels to the system.  
Each channel provides an ISDN 64 kbps connection that can be used for voice 
or data services. The two channels in the HSD-128 can be internally bonded to 
provide a 128 kbps ISDN data connection. Externally, all four channels shown 
in Multi-Channel System Block Diagram on page 40 can be combined to provide 
a single 256 kbps capability with the help of a router, Ethernet hub, or Terminal 
Adapter.