Specifications

SDM-300L3 Satellite Modem Revision 0
Specifications MN/SDM300L3.IOM
15–25
15.9 Acquisition Time
The acquisition times apply for QPSK only.
Viterbi
6 dB E
b
/N
0
with ± 35 kHz Frequency Uncertainty
Code Rate Data Rate T
acq
P (t < T
acq
)
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 E
b
/N
0
with ± 35 kHz Frequency Uncertainty
Code Rate Data Rate T
acq
P (t < T
acq
)
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 E
b
/N
0
with ± 3 kHz Frequency Uncertainty
Code Rate Data Rate T
acq
P (t < T
acq
)
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.