Chapter 1 Introduction To The 7225H Interfacility Link - Foxcom SATLIGHT 7225H Installation And User Manual

1 Introduction to the 7225H Interfacility Link
1.1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Product Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Panel Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
The Sat-Light™ 7225H IFL transmits an L-Band RF signal over
single-mode fiber from a satellite antenna LNB to control room
equipment up to 5 kilometers away. The 7225H IFL is a DFB high
dynamic range link for applications that require either a higher
quality link or transmission over long distances. The 7225H IFL
consists of an optical transmitter (7225HT) which receives the L-
Band signal from the LNB and an optical receiver (7225HR) which
connects to a satellite receiver.
The 7225HT and 7225HR modules plug into the 7180M, a 3U
chassis/power supply, which enables expansion of the system to
accommodate any eight Sat-Light modules. Accessories include the
Model 7001P Power Supply, the Model 2040 1:1 Redundant Switch,
the Model 2100 Amplifier, the 2380 Relay Adaptor, and the
Model 7050 Serial Optical Multiplexer, an asynchronous data link.
The 7225H IFL transmits all satellite modulation schemes - digital
or analog. Any FM modulated RF signal is transmitted accurately.
The RF signal is directly modulated and adds virtually no phase
noise to the original signal. The direct modulation, along with
extremely flat amplitude and group delay, guarantees low bit error
rate (BER) and high signal quality, independent of distance.
Featuring a Multi-Quantum Well (MQW) laser diode, the 7225H IFL
operates over a wide temperature range, without needing to be
cooled. Slow start optical power control protects the laser from DC
transients upon turn-on.
Gain Control provides for optimization of the RF signal. LEDs, and
back panel monitors and alarms allow for complete system status
monitoring and for interfacing with monitor and control (M&C)
systems.
7225H Interfacility Link Installation and User's Guide
Foxcom proprietary information
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