Terrasat IBUC - IBUC Redundant Systems; Introduction; Description; Component Descriptions

IBUC Operation Manual
Terrasat Communications, Inc.
Rev. A
1-1
Chapter 1 Introduction
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Overview
This user manual is for use with the Terrasat Communications, Inc. C and Ku-Band
Intelligent Block Upconverters (IBUC’s), Power Supply Units (PSUI’s), Low Noise
Block Converters (LNB’s), associated Interface Units (IFU’s, Tx 1+1 and Rx 1+1)
and accessories supplied with IBUC systems.
Intelligent Block Upconverters (IBUC’s)
The C and Ku-Band IBUC’s block upconvert an L-Band IF to one of four C-Band
uplink frequencies or one of three Ku-band uplink frequencies. The rated power of
the IBUC is specified at P1dB at the output waveguide flange or N-type connector.
The IBUC comes in a single weatherproof housing suitable for antenna or feedhorn
mounting. Refer to Table 2-1 for available frequency plans and power levels.
The term “Intelligent Block Upconverter” refers to the advanced features and Monitor
and Control (M&C) capabilities of the IBUC product. The IBUC includes Automatic
Gain Control (AGC) and Automatic Level Control (ALC) features as well as internal
diagnostics. It also provides extensive monitoring and control through a menu of
software commands and alarms providing access to the numerous operating
parameters and features available in the unit. Access to features and M&C is
provided via several methods including: Hand held terminal, RS232, RS485, TCP/IP
and FSK link via the IFL cable. The IBUC is also fitted with a multi-function LED for
visual status indications.
Power Supply Units (PSUI’s)
The PSUI converts the universal AC input (100-240VAC) to 24 or 48 VDC,
depending on the option ordered, to power the IBUC. The power supply is available
in two versions: indoor rack-mount and outdoor types. The 200W hot-swappable
dual Power Supply (indoor rack-mount) is housed in a Standard 1RU (19 inches
rack) and powers Low Power Tx and Rx Redundant Systems. The outdoor PSUI
comes in a single weatherproof housing suitable for antenna mounting and can
power all of the Terrasat IBUC’s. There are three versions of the outdoor PSUI
available: 400W 24V, 400W 48V and 700W 48V (same Power Supply as 400W 48V
with external cooling fan in a fan housing).
Low Noise Block Converters (LNB’s)
The C and Ku-Band LNB’s block downconvert one of three C-Band downlink
frequencies or one of three Ku-band downlink frequencies to an L-Band IF. The
noise temperature of the LNB is specified in degrees Kelvin. The LNB comes in a