IBUC Operation Manual
Terrasat Communications, Inc.
Rev. A
1-2
single weatherproof housing suitable for antenna feedhorn mounting. Refer to Table
2-2 for available frequency plans and noise temperature ratings.
Interface Unit (IFU)
The IFU (Interface Unit) allows the integrator to multiplex a 10MHz reference, a DC
voltage (24V or 48V) for Low Power IBUC’s, as well as 24V DC supply for the LNB,
onto the IFL that connects the Modem to the IBUC and LNB. The IFU comes in a
variety of configurations to fulfill customer specific needs.
Interface for Redundant Systems (Tx 1+1 and Rx 1+1)
The Tx 1+1 Interface module is a passive unit. This module divides the FSK, 10MHz
reference and L-Band signals, as well as routes the Ethernet connection to the
IBUC’s through an Ethernet switch. It supports various interface connectors and
includes a bank of LEDs for visual indication of alarm conditions. The user interface
may be through any of the following: via web browser to embedded web pages,
TCP/IP through Telnet session, handheld terminal, RS232, RS485, as well as FSK
link to both IBUC’s.
The Rx 1+1 Interface is a separate outdoor Rx interface module that is powered by
the IBUC power supplies and performs all required functions for redundant operation
of LNB’s. No indoor controller is necessary. The user interface may be through any
of the following: via web browser to embedded web pages, TCP/IP through Telnet
session, handheld terminal, RS232, or RS485. It also includes a bank of LEDs for
visual indication of alarm conditions.
This manual provides information on:
• How to install, operate, maintain and troubleshoot the IBUC’s, Power Supply
Units, Interface Units and Redundant Systems.
• How to use the user interface protocols for remote monitor and control
capabilities of the IBUC and Redundant Systems.
Reference Documents
Table 1-1 Reference Documents
Earth station Standards
Intelsat IESS 309 Performance Characteristics for Intermediate Data Rate
Digital Carriers Using Convolutional Encoding and QPSK
Modulation
Eutelsat EESS 502 Minimum Technical and Operational Requirements for
Earth Stations Transmitting to a Eutelsat Transponder for
Non-Standard Structured Types of SMS Transmissions.
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