Cisco PowerVu D9858 - Page 173

4023074 Rev B Model D9858 Advanced Receiver Transcoder Installation and Operation Guide A-5
DVB-S/DVB-S2, Continued
DVB-S Eb/No (C/N) Ratio
C/N = Eb/No + 10 log (2 x FEC X 188/204)
The D9858 transcoder displays the C/N Ratio.
Convolutional FEC Rate Eb/No Ratio (dB) in IF
Loop for Correct MPEG-2
System Operation
C/N at DVB Threshold
(BW = Symbol Rate)
1/2 4.5 4.1
2/3 5.0 5.9
3/4 5.5 6.9
5/6 6.0 7.9
7/8 6.4 8.5