Comtech EF Data CDM-710G, Installation And Operation Manual

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CDM-710G High-Speed Satellite Modem Revision 1
Front Panel Operation MN-CDM710G
6–14
IMPORTANT
G.703 fixed Data Rates E3 (34.368), T3 (44.736) and STS-1 (51.840) are set using
the Int1 (CDI-10-1 Single G.703) menu. The Tx Symbol Rate is automatically
entered from the selected Data Rate from modulation type, code rate, pilot and
FEC frame setting. The Rx Symbol Rate is entered manually.
HSSI maximum Data Rate (70 Mbps) may limit symbol maximum.
Table 6-1. Symbol Rate / Data Rate Range – Standard FECFrame* and 188 Byte Format
(QPSK 1/4, 1/3 and 2/3 data is for informational purposes only)
Modulation FEC Code
Inner
Code
Rate
Symbol Rate
(Msps)
Spectral
Efficiency
Pilot OFF
Data Rate (Mbps)
Pilot OFF
Spectral
Efficiency
Pilot ON
Data Rate (Mbps)
Pilot ON
Min Max Min Max Min Max
QPSK LDPC+BCH
1/4
1 45*
0.490243 0.490243 22.060942 0.478577 0.478577 21.535965
1/3 0.656448 0.656448 29.540166 0.640827 0.640827 28.837209
2/5 0.789412 0.789412 35.523546 0.770627 0.770627 34.678204
1/2 0.988858 1.000000 44.498615 0.965327 1.000000 43.439697
3/5 1.188304 1.188304 53.473684 1.160026 1.160026 52.201190
2/3 1.322253 1.322253 59.501385 1.290788 1.290788 58.085452
3/4 1.487473 1.487473 66.936288 1.452076 1.452076 65.343429
4/5 1.587196 1.587196 71.423823 1.549426 1.549426 69.724175
5/6 1.654663 1.654663 74.459834 1.615288 1.615288 72.687939
8/9 1.766451 1.766451 79.490305 1.724416 1.724416 77.598702
9/10 1.788612 1.788612 80.487535 1.746049 1.746049 78.572201
8PSK LDPC+BCH
3/5
1 45*
1.779991 1.779991 80.099585 1.739569 1.739569 78.280616
2/3 1.980636 1.980636 89.128631 1.935658 1.935658 87.104623
3/4 2.228124 2.228124 100.265560 2.177525 2.177525 97.988646
5/6 2.478562 2.478562 111.535270 2.422276 2.422276 109.002433
8/9 2.646012 2.646012 119.070539 2.585924 2.585924 116.366586
9/10 2.679207 2.679207 120.564315 2.618365 2.618365 117.826440
16APSK LDPC+BCH
2/3
1 35*
2.637201 2.637201 92.302026 2.574613 2.574613 90.111471
3/4 2.966728 2.966728 103.835482 2.896320 2.896320 101.371209
4/5 3.165623 3.165623 110.796808 3.090495 3.090495 108.167326
5/6 3.300184 3.300184 115.506446 3.221863 3.221863 112.765192
8/9 3.523143 3.523143 123.310006 3.439530 3.439530 120.383555
9/10 3.567342 3.567342 124.856967 3.482680 3.482680 121.893803
32APSK LDPC+BCH
3/4
1 28*
3.703295 3.703295 103.692261 3.623332 3.623332 101.453291
4/5 3.951571 3.951571 110.643985 3.866247 3.866247 108.254911
5/6 4.119540 4.119540 115.347126 4.030589 4.030589 112.856500
8/9 4.397854 4.397854 123.139923 4.302894 4.302894 120.481032
9/10 4.453027 4.453027 124.684751 4.356875 4.356875 121.992503
* Notes:
1. DVB-S2 - Standard FECFrame = 64,800 Bits.
2. For G.703 fixed Data Rates, limit maximum Symbol Rate to less than the maximum indicated in Table 6-1 .
For more information on this interface, see Chapter 12. SINGLE G.703 (E3/T3/STS-1) INTERFACE
(CDI-10-1) .
3. HSSI Data Rate limit of 70 Mbps may be reached before Symbol Rate limit is reached. For more
information on this interface, see
Chapter 13. HSSI INTERFACE (CDI-60) .