Comtech EF Data SNM-1010L - Manual (Page 257)

SNM-1010L Data/Control Modem Revision 0
Specifications
MN/SNM1010L.OM
B.4 Acquisition
B.4.1 Acquisition Time
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 < 10 sec 95%
1/2 ≥ 9.6 < 64 kbps < 5 sec 95%
1/2 ≥ 64 < 196 kbps < 1 sec 95%
1/2 ≥ 196 < 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 ± 3 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 < 196 kbps < 1 sec 95%
1/2 ≥ 196 < 512 kbps < 17 sec 95%
1/2 ≥ 512 < 1000 kbps < 2.5 sec 95%
1/2 ≥ 1 < 2.5 Mbps < 1 sec 95%
QPSK
6 dB E
b
/N
0
with ± 3 kHz Frequency Uncertainty
Codec Code Rate Data Rate T
acq
P(t < T
acq
)
Viterbi 1/2 < 9.6 kbps 3 sec 95%
Viterbi 1/2 ≥ 9.6 ≤ 64 kbps 2 sec 95%
Viterbi 1/2 ≥ 64 ≤ 196 kbps 1 sec 95%
Viterbi 1/2 ≥ 196 < 512 kbps 3 sec 95%
Viterbi 1/2 ≥ 512 < 1000 kbps 2 sec 95%
Viterbi 1/2 ≥ 1000 ≤ 25 Mbps 1 sec 95%
B.4.2 Receive Carrier Acquisition Range
1. The modem will automatically lock to a correctly formatted carrier, which is within
(Acquisition Range)/2 of the displayed RX frequency.
2. The operator adjusts the acquisition range from 0 to 1 MHz, in 1 Hz steps.
3. The operator adjusts the center of the acquisition range from –500 to +500 kHz.
B–15