BER Testing ............................................................................................................................................ G -4

G.3.5

ACM Modulator Status . ........................................................................................................................ G -4

G.3.6

ACM Demodulator Status .................................................................................................................... G -4

G.3.7

CnC Status . ............................................................................................................................................. G -4

APPENDIX H. FEC (FORWARD ERROR CORRECTION) .................................................. H-1

H.1

Introduction ......................................................................................................................... H-1

H.2

DVB-S2: LDPC and BCH . ......................................................................................................... H-1

H.2.1

Range of Data Rates . ............................................................................................................................. H -2

H.2.2

BER, QEF, Eb/No, Es/No Spectral Efficiency, and Occupied Bandwidth ........................................... H -2

Table 1-1. FAST and FAST-accessible Hardware Options . ......................................................................... 1-4

Table 3-1. CDM-750 Rear Panel Connectors . ............................................................................................ 3-6

Table 5-1. CDM-750 Front Panel Menu Matrix . ........................................................................................ 5-5

Table 5-2. Symbol Rate / Data Rate Range for Standard FECFrame (DVB-S2 Standard FECFrame = 64,800

bits) ................................................................................................................................................. 5-25

Table C-1. ACM Example for Standard FECFrame (64,800 bits) ............................................................... C -2

Table C-2. ModCod Comparison: ACM vs. CCM........................................................................................ C -3

Table C-3. Turning Margin into Additional Capacity ................................................................................. C -5

Table C-4. Modulation Type Impairment . ............................................................................................... C -10

Table C-5. Spectral Efficiency and Ideal Es/No by ModCod . ................................................................... C -11

Table C-6. Data Rate by Option Symbol Rate.......................................................................................... C -15

Table D-1. Spectral Efficiency using DoubleTalk Carrier-in-Carrier .......................................................... D -7

Table E-1. CDM-750 Co+No/No to C/N (Es/No) and Eb/No (dB) for DVB-S2 QPSK and 8PSK .................. E-3

Table E-2. CDM-750 Co+No/No to C/N (Es/No) and Eb/No (dB) for DVB-S2 16APSK and 32APSK .......... E-4

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