Comtech EF Data CMR-5975 Installation And Operation Manual page 119

Appendix F. DVB-S/S2 BER
Performance at Quasi-Error Free
The Forward Error Correction (FEC) technique used in Digicast receivers complies with ETSI
EN 300 421 for DVB-S and ETSI EN 302 307 for DVB-S2. The information provided below
demonstrates the Es/No to provide "Quasi Error Free" (QEF) performance for a packet error rate
-7
PER of 10 . A PER of 10
Test Configuration:
Symbol Rate: 20 Msps
Frame Size = 64,800 (Normal Frames)
Pilots: Off
Roll Off: 35%
Nominal Input Power: -48 dB
L-Band Frequency: 1,170 MHz
Input Range: -25 to -50 dBm
Recorded Data DVB-S:
Type
DVB-S
DVB-S
DVB-S
DVB-S
DVB-S
-7
corresponds to an approximate BER in the order of 3 x 10
Modulation
QPSK
QPSK
QPSK
QPSK
QPSK
F–1
Assumptions:
‐7
QEF = 10
PER
Es/No = C/N
FEC Es/No dB
1/2
2/3
3/4
5/6
7/8
(QEF)
-10
.
2.92
4.67
5.76
6.73
7.49