Comtech EF Data SNM-1010L - Manual (Page 26)

SNM-1010L Data/Control Modem Revision 0
Introduction MN/SNM1010L.OM
1.4 General Specifications
General Specifications
Digital Data Rate
2.4 kbps to 5.0 Mbps, in 1 bit/s step
Note: In some applications the practical lower data rate is typically 19.2
kbps or higher., depending upon the performance of equipment used in
conjunction with the modem. These applications include the use of a
BUC or a LNB.
Symbol Rate 4.8 k symbols/s to 2.5 Msym/s
Modulation/Demodulation BPSK R = 1/2
QPSK R = 1/2, 3/4, and 7/8
OQPSK R = 1/2, 3/4, and 7/8
8PSK
R = 2/3
Plesiochronous/Doppler Buffer 1 to 99 ms, in 1 ms steps up to 2.6 Mbps
32 to 262,144 bits in 16 bit steps
Forward Error Correction (FEC) Viterbi, K=7, R = 1/2, 3/4, and 7/8
Sequential, R = 1/2, 3/4, and 7/8
Reed-Solomon Concatenated per Closed Network, R = 225/205
Trellis, R = 2/3 (8PSK)
Turbo Product Coding, R = 3/4, 21/44, and 5/16
Uncoded
Data Scrambling IESS-308 (V.35 Intelsat), IESS-309/310, FDC, V.35 (EFD/CSC),
Modified V.35, None
External Reference Input EXT1, EXT5, EXT10, EXT20 MHz
Note: Only 10 MHz allowed when operating with BUC requiring 10
MHz reference from modem.
External Reference Output Level
(Sourcing) 10 MHz, 0 to 10 dBm
Diagnostic Features Baseband Loopback
BER Monitoring
Buffer Fill Status Monitoring
Input IF Power Monitoring
Interface Loopback
IF Loopback
Fault Monitoring (includes current and stored faults)
Remote Control via Serial Port
RF Loopback
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