Comtech EF Data SDR-54A - Manual (Page 53)

SDR-54A Satellite Demodulator Revision 4
Reed-Solomon Option MN/SDR54A.IOM
RS CODEC
(DECODER SECTION)
SERIAL
TO PARALLEL
CONVERTER
RAM
DEINTERLEAVER
DEINTERLEAVER
ADDRESS
GENERATOR
RS TIMING CONTROLLER
UNIQUE WORD
DETECTOR
RXSATDAT
(SERIAL)
RXSATCLK
DMXDAT
(SERIAL)
DMXCLK
PARALLEL
TO SERIAL
CONVERTER
SYNCHRONOUS
DESCRAMBLER
Figure 6-5. Reed-Solomon Decoder Section Block Diagram
6.7 BER Performance
Table 6-2. BER Performance Curve Data
Eb/N0 (dB) Specification
BER 1/2 Rate 3/4 Rate 7/8 Rate
10 -6 N/A 5.6 6.7
10 -7 N/A 5.8 6.9
10 -8 N/A 6.0 7.1
10 -10 5.0 6.3 7.5
6–7