Comtech EF Data CDM-710G - Manual (Page 91)

CDM-710G High-Speed Satellite Modem Revision 1
Front Panel Operation MN-CDM710G
6–15
4. HSSI Data Rate Limit of 1 Mbps is violated with QPSK 1/2 at 1Msps, so the minimum symbol rate is
1.011270 Msps (pilot off) and 1.035920 Msps (pilot on).
Table 6-2. Symbol Rate / Data Rate Range – Short FECFrame* and 188 Byte Format
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*
0.365324 0.365324 16.439560 0.357467 0.357467 16.086022
1/3 0.629060 0.629060 28.307692 0.615532 0.615532 27.698925
2/5 0.760928 0.760928 34.241758 0.744564 0.744564 33.505376
1/2 0.848840 1.000000 38.197802 0.830585 1.000000 37.376344
3/5 1.156532 1.156532 52.043956 1.131661 1.131661 50.924731
2/3 1.288400 1.288400 57.978022 1.260693 1.260693 56.731183
3/4 1.420269 1.420269 63.912088 1.389725 1.389725 62.537634
4/5 1.508181 1.508181 67.868132 1.475747 1.475747 66.408602
5/6 1.596093 1.596093 71.824176 1.561768 1.561768 70.279570
8/9 1.727961 1.727961 77.758242 1.690800 1.690800 76.086022
9/10 N/A N/A N/A N/A N/A N/A
8PSK LDPC+BCH
3/5
1 45*
1.725319 1.725319 77.639344 1.692033 1.692033 76.141479
2/3 1.922040 1.922040 86.491803 1.884959 1.884959 84.823151
3/4 2.118761 2.118761 95.344262 2.077885 2.077885 93.504823
5/6 2.381056 2.381056 107.147541 2.335120 2.335120 105.080386
8/9 2.577778 2.577778 116.000000 2.528046 2.528046 113.762058
9/10 N/A N/A N/A N/A N/A N/A
16APSK LDPC+BCH
2/3
1 35*
2.548792 2.548792 89.207729 2.505223 2.505223 87.682811
3/4 2.809662 2.809662 98.338164 2.761633 2.761633 96.657170
4/5 2.983575 2.983575 104.425121 2.932574 2.932574 102.640076
5/6 3.157488 3.157488 110.512077 3.103514 3.103514 108.622982
8/9 3.418357 3.418357 119.642512 3.359924 3.359924 117.597341
9/10 N/A N/A N/A N/A N/A N/A
32APSK LDPC+BCH
3/4
1 28*
3.493093 3.493093 97.806607 3.419165 3.419165 95.736626
4/5 3.709309 3.709309 103.860661 3.630805 3.630805 101.662551
5/6 3.925526 3.925526 109.914715 3.842446 3.842446 107.588477
8/9 4.249850 4.249850 118.995796 4.159906 4.159906 116.477366
9/10 N/A N/A N/A N/A N/A N/A
* Notes:
1. DVB-S2 - Short FECFrame = 16,200 Bits.
2. For G.703 fixed Data Rates, limit maximum Symbol Rate to less than the maximum indicated in Table 6-2.
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).
4. HSSI Data Rate Limit of 1 Mbps is violated with QPSK 1/2 at 1Msps so the minimum symbol rate is
1.178079 Msps (pilot off) and 1.203980 Msps (pilot on).