IBUC Operation Manual
Terrasat Communications, Inc.
Rev. A
7-7
Power Supply Units (PSUI)
Outdoor PSUI
See Chapter 3 for Outdoor PSUI’s (PSUI-524, PSUI-548 and PSUI-648).
Indoor PSUI
The 200W hot-swappable dual Power Supply (indoor rack-mount) can power Low
Power Tx and Rx Redundant Systems. The PSUI converts the universal AC input (100-
240VAC) to 24VDC or 48 VDC to power the IBUC’s and the Rx 1+1 Interface Module.
The AC input to the PSUI is routed through P1. There are two power supplies, each
with its own power entry module. Both the live and the neutral inputs are fused in the
power entry module for maximum protection and routed to the internal AC/DC module.
The DC output is routed to connector J1. Each power supply has a cooling fan. An LED
on the front panel of both supplies indicates when the power supply is in operation.
Waveguide Switch
Redundant Systems are provided with the waveguide switch. The switch cable, used to
connect the Tx and Rx Interface to the switch is also included.
Software
Both Tx and Rx Redundant Systems monitor and control several parameters and have
features that make installation and use of the Redundant Systems simpler as well as
enhancing system performance. For a full description of M&C functions, refer to Chapter
6 for Tx redundancy and M&C Functions section on page 7-35 for Rx redundancy.
Some of the key features include;
Monitor and Control – the Redundant Systems may be monitored and controlled
through RS-232, RS-485, Ethernet port, an optional handheld terminal or via an FSK
link with compatible modems.
Tx Redundancy – The IBUC’s sense automatically when they are configured in
Redundancy. The logic for redundant operation is built-in, which eliminates the need of
an external switching controller.
Autocloning – The Master IBUC (online) periodically updates the Slave IBUC (standby)
with configuration data. It allows the operator to configure the system by configuring
only the Master IBUC. Slave will become a “clone” of the Master when Autocloning is
enabled.
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