Справочник Пользователя для EMS Technologies Canada Ltd. HSD-X

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HPA fault

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External Reference Fault

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Internal ROM Fault

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Internal RAM Fault

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Over Temperature Fault

(j)

HSD Remote Reset
The remote reset output provides an external reset function for the complete 
HSD system. Pressing the momentary “normally open” (N.O.) switch resets the 
system’s processor-card circuitry.

The remote reset has the same functionality as pressing the “test” button on the 
front panel of the LRU.

CAUTION:  Cooperative and Combined/Selective Mode installations and 

HSD-X transceivers DO NOT support the use of the reset function. 
If the HSD transceiver is reset in Cooperative or Combined Mode 
installations, the communications between the HSD HPA and the 
SDU of the Aero H/H+ system can be disrupted—potentially 
causing the SATCOM system faults that may require the complete 
reset of both systems.

(2) HSD-X Multi-Channel System Interfaces

This section describes the external interfaces unique to Stand-Alone Mode, HSD-128 
Transceivers installed in a Multi-Channel configuration with HSD-X transceivers. 

The following additional wiring is required for the installation of Multi-Channel HSD 
systems.

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Splitter for the Rx path (See "Installation" on page 3-1)

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Combiner for the Tx path (See "Installation" on page 3-1)

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TPC1 must be installed on any HSD-128 ARINC 600 Trays that do not have TPC1 
installed 

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Forward ID Address as per HSD wiring 

Detailed information on the splitter and combiner specifications and losses, as well 
as cabling notes and system interconnections for Multi-Channel Configurations of 
HSD and HSD-X transceivers are provided in "Installation" on page 3-1. 

(a) Multi-Channel HSD-X Antenna Interface

Refer to "HSD Antenna Interface" on page 1-23.

(b) Weight-on-Wheels (WOW) (Optional)

Refer to "HSD WOW Pin Wiring" on page 1-22. 

(c) HSD-X Forward ID

Like the HSD transceivers, the HSD-X units use Forward IDs (Fwd ID) to identify 
the terminal to the Inmarsat communication network.