Operating instructions

DMD50 Universal Satellite Modem Technical Specifications
TM118 – Rev. 1.1 7-1
Technical Specifications
7
7.0 Data Rates
Refer to Section 7.17.
7.1 Modulator
Modulation BPSK, QPSK, and OQPSK (8PSK, 16QAM Optional)
IF Tuning Range 50 to 90, 100 to 180 MHz in 1 Hz Steps
L-Band Tuning Range 950 to 2050 MHz in 1 Hz Steps
Impedance IF, 75-Ohm (50-Ohm Optional)
L-Band, 50-Ohm
Connector BNC, 75-Ohm
SMA, 50-Ohm, L-Band
Return Loss IF, 1.5:1 Minimum
L-Band, 2.0:1 Minimum
Output Power 0 to -25 dB
Output Stability ±0.5 dB Over Time and Temperature
Output Spectrum Meets IESS 308/309/310 Power Spectral Mask
Spurious -55 dBc In-Band (50 to 90 MHz, 100 to 180 MHz,
950 to 2050 MHz)
-45 dBc Out-of-Band
On/Off Power Ratio >60 dB
Scrambler CCITT V.35 or IBS (Others Optional)
FEC Viterbi 1/2, 3/4 and 7/8
DVB Viterbi 1/2, 2/3, 3/4, 5/6, 7/8
Sequential 1/2, 3/4, 7/8 (optional)
Trellis 2/3
DVB PTCL 2/3, 5/6, 8/9, 3/4, 7/8
Turbo Product Code (Optional)
BPSK 21/44
QPSK/OQPSK 1/2, 3/4, 7/8 <20Mbps
QPSK/OQPSK .750, .875 >20Mbps
8PSK/16QAM 3/4, 7/8 <20Mbps
8PSK/16QAM .750, .875 >20Mbps
Legacy Turbo Rates: 0.495, 0.793
Outer Encoder Options Reed-Solomon INTELSAT (DVB Optional, Custom
Rates Optional)
Data Clock Source Internal, External, Rx Recovered
Internal Stability 1 x 10
-6
Typical (Optional to 5 x 10
-8
)