Comtech EF Data SDM-300L3 - Manual (Page 331)

SDM-300L3 Satellite Modem Revision 0
Specifications MN/SDM300L3.IOM
14–25
14.9 Acquisition Time
The acquisition times apply for QPSK only.
Viterbi
6 dB Eb/N0 with ± 35 kHz Frequency Uncertainty
Code Rate Data Rate Tacq P (t < Tacq)
1/2 < 9.6 kbps < 10 sec 95%
1/2 ≥ 9.6 < 64 kbps < 5 sec 95%
1/2 ≥ 64 < 190 kbps < 1 sec 95%
1/2 ≥ 190 < 512 kbps < 10 sec 95%
1/2 ≥ 512 < 1000 kbps < 2.5 sec 95%
1/2 ≥ 1 < 2.5 Mbps < 1 sec 95%
Sequential
6 dB Eb/N0 with ± 35 kHz Frequency Uncertainty
Code Rate Data Rate Tacq P (t < Tacq)
1/2 2.4 < 4.8 kbps < 20 sec 95%
1/2 ≥ 4.8 < 9.6 kbps < 10 sec 95%
1/2 ≥ 9.6 < 64 kbps < 5 sec 95%
1/2 ≥ 64 < 190 kbps < 1 sec 95%
1/2 ≥ 190 < 512 kbps < 17 sec 95%
1/2 ≥ 512 < 1000 kbps < 2.5 sec 95%
1/2 ≥ 1 < 2.5 Mbps < 1 sec 95%
Viterbi
6 dB Eb/N0 with ± 3 kHz Frequency Uncertainty
Code Rate Data Rate Tacq P (t < Tacq)
1/2 < 9.6 kbps 3 sec 95%
1/2 ≥ 9.6 ≤ 64 kbps 2 sec 95%
1/2 ≥ 64 ≤ 190 kbps 1 sec 95%
1/2 ≥ 190 < 512 kbps 3 sec 95%
1/2 ≥ 512 < 1000 kbps 2 sec 95%
1/2 ≥ 1000 ≤ 25 Mbps 1 sec 95%
Note: Acquisition time with Turbo coding TBD.