Introduction, Demodulator functions, Chapter 1. introduction – Comtech EF Data SDR-54A User Manual

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Chapter 1. Introduction

This chapter describes the SDR-54A satellite demodulator, hereinafter referred to as
“the demodulator.”

Two versions of the SDR-54A are available:

• Desktop (Figure 1-1)
• Rack Mount (Figure 1-2)

1.1 Demodulator

Functions

For the purposes of this document, a demodulator will consist of a device having the
following functions:

• Perform filtered QPSK or BPSK demodulation from carriers of variable

frequencies/amplitudes.

• Decode the data.

• Descramble the data.

• Provide Terrestrial data interface.

• Provide Monitor and Control interface for remote operation.

• Maintain full functionality of SDM-51, SDM-52, and all their respective

configurations.

1–1