Справочник Пользователя для EMS Technologies Canada Ltd. HSD-X

This section provides the maintenance and repair information applicable for all HSD 
transceiver models.

The HSD Transceiver does not require routine maintenance.

All repair procedures must be completed by EMS SATCOM approved repair facilities. 

No special supplies are required to repair this equipment.  

HSD units that require servicing must be returned to EMS Technologies, Canada or to an 
EMS SATCOM approved service center. Refer to "Test and Fault Isolation" on page 4-1 
for unit testing requirements and procedures.

This equipment does not require any special repair procedures. 

If an HSD or HSD-X unit must be removed from service for repair, with power removed, 
disconnect all equipment from the unit and then remove it from the ARINC tray. 

If an HSD-X unit is removed for servicing, the Multi-Channel HSD system will still operate 
(with reduced channel capacity) as long as the HSD-X trays are populated as shown in 
Figure 5–1.

With an HSD-X unit removed from the series, the remaining HSD-X units must be moved 
so that the empty tray is always the last tray in the installation series. If the RF path is not 
equipped with isolators (either separate or built into the combiner), cap all unused splitter 
outputs and combiner inputs with 50-ohm terminations.