Comtech EF Data CDM-700 - Manual (Page 145)

CDM-700 High Speed Satellite Modem Revision 5
Summary of Specifications MN/CDM700.IOM
10–3
10.2 Data Rate Range
CDM-700 Symbol / Data Rate Ranges By Tier:
CDM-700 Tier Range (See Notes)
Tier
Min
Symbol Rate
(Msps)
Max
Symbol Rate
(Msps)
Modulation Code Rate FEC
Composite Data Rate (Mbps)
(Rounded)
Min Max
QPSK,
8PSK
1
1 15.0 QPSK 3/4 TPC 1.463415 21.951220
1 15.0 QPSK 7/8 TPC 1.696713 25.450689
1 15.0 8PSK 3/4 TPC 2.195122 32.926829
1 15.0 8PSK 7/8 TPC 2.545069 38.176034
2
1 22.5 QPSK 3/4 TPC 1.463415 32.926829
1 22.5 QPSK 7/8 TPC 1.696713 38.176034
1 22.5 8PSK 3/4 TPC 2.195122 49.390244
1 22.5 8PSK 7/8 TPC 2.545069 57.264051
3
1 30.0 QPSK 3/4 TPC 1.463415 43.902439
1 30.0 QPSK 7/8 TPC 1.696713 50.901379
1 30.0 8PSK 3/4 TPC 2.195122 65.853659
1 30.0 8PSK 7/8 TPC 2.545069 76.352068
4
1 37.5 QPSK 3/4 TPC 1.463415 54.878049
1 37.5 QPSK 7/8 TPC 1.696713 63.626723
1 37.5 8PSK 3/4 TPC 2.195122 82.317073
1 37.5 8PSK 7/8 TPC 2.545069 95.440085
5
1 45.0 QPSK 3/4 TPC 1.463415 65.853659
1 45.0 QPSK 7/8 TPC 1.696713 76.352068
1 45.0 8PSK 3/4 TPC 2.195122 98.780488
1 45.0 8PSK 7/8 TPC 2.545069 114.528102
6
1 64.0 QPSK 3/4 TPC 1.463415 93.658537
1 64.0 QPSK 7/8 TPC 1.696713 108.589608
1 64.0 8PSK 3/4 TPC 2.195122 140.487805
See
Notes
1 61.1 8PSK 7/8 TPC 2.545069 155.520000
QPSK,
8PSK,
16-QAM
7
1 15.0 16-QAM 3/4 TPC 2.926829 43.902439
1 15.0 16-QAM 7/8 TPC 3.393425 50.901379
8
1 22.5 16-QAM 3/4 TPC 2.926829 65.853659
1 22.5 16-QAM 7/8 TPC 3.393425 76.352068
9
1 30.0 16-QAM 3/4 TPC 2.926829 87.804878
1 30.0 16-QAM 7/8 TPC 3.393425 101.802757
10
1 37.5 16-QAM 3/4 TPC 2.926829 109.756098
1 37.5 16-QAM 7/8 TPC 3.393425 127.253446
11
1 45.0 16-QAM 3/4 TPC 2.926829 131.707317
1 45.0 16-QAM 7/8 TPC 3.393425 152.704136
12 1 53.1 16-QAM 3/4 TPC 2.926829 155.520000
See
Notes
1 45.8 16-QAM 7/8 TPC 3.393425 155.520000
QPSK,
8PSK,
16-QAM,
64-QAM 13 1 32.0 64-QAM 3/4 TPC 4.390244 140.400000
See
Notes
1 30.6 64-QAM 7/8 TPC 5.090138 155.520000
Notes:
1. Rate 7/8 is 20/23 actual
2. Composite Data Rate = sum of data rates at each data port at the terrestrial Interface
3. Maximum data rate is limited by the lesser of 155.52 Mbps or the available symbol rate range.
Values in the Table are rounded and minor differences may appear in the actual display.
4. Composite Data rate = Symbol Rate x (Code Rate * Modulation Index / 1.025).
5. The Symbol Rate includes 2.5% overhead added to the Composite Data Rate