Comtech EF Data SDR-54A - Manual (Page 16)

SDR-54A Satellite Demodulator Revision 4
Introduction MN/SDR54A.IOM
Figure 1-1. SDR-54A Desktop Unit
Figure 1-2. SDR-54A Rack Mount Unit
1.2 Overview
The demodulator provides all necessary functions for accepting L-Band digital data
transmissions, extracting the data, and providing it to the user in a standard serial data
format.
The demodulator is composed of four units:
♦ L-Band digital demodulator
♦ DEMUX (optional)
♦ L-Band low noise block (LNB) converter (required)
♦ Reed-Solomon (optional)
The demodulator is available as either a desktop or rack mount unit. The demodulator may
be located away from the LNB, provided the interconnecting cable losses do not reduce
the signal to below the minimum discernible level of the demodulator (typically
30 dB of loss, dependent on the receive signal level).
The demodulator provides all necessary functions for converting an RF modulated data
carrier input into a digital synchronous data output.
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