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Comtech Radyne DMD50 Universal Satellite Modem

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  • Data rates from 2.4 kbps to 52 Mbps
  • Optional DVB
  • Turbo FEC
  • High stability reference


SKU: SATRES-14830

DMD50 Performance
Modulator
Modulation BPSK, QPSK, and OQPSK (8PSK, 16QAM Optional)
IF Tuning Range 50 to 90 and 100 to180 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: 14 dB Minimum

L-Band: 10 dB Minimum
Output Power 0 to -25 dBm
Output Stability IF: ±0.5 dB Over Frequency and Temperature

L-Band: ±1.0 dB Over Frequency and Temperature
Output Spectrum Meets IESS 308/309/310/DVB-S 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, K=7 at 1/2, 3/4 and 7/8

Trellis 2/3

Turbo Product Code (Optional)

BPSK 21/44

QPSK/OQPSK 1/2, 3/4, 7/8

8PSK/16QAM 3/4, 7/8

Legacy Turbo Rates: 0.495, 0.793
Outer Encoder Options Reed-Solomon INTELSAT (DVB Optional)

Custom (N, K) Reed-Solomon
Data Clock Source Internal, External, Rx Recovered
Internal Stability 1 x 10-6 Typical (Optional to 5 x 10-8
Demodulator
Demodulation BPSK, QPSK, and OQPSK (8PSK, 16QAM Optional)
IF Tuning Range 50 to 90 and 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: 14 dB Minimum

L-Band: 10 dB Minimum
Spectrum INTELSAT IESS 308/309/310/DVB-S Compliant
Input Level -55 to +10dBm
Total Input Power -5 dBm or +40 dBc (the lesser)
FEC Viterbi, K = 7 at 1/2, 3/4 and 7/8 Rate

Rate Sequential 1/2, 3/4, 7/8 (Optional)

Trellis 2/3

Turbo Product Code (Optional)

<20Mbps

BPSK 21/44

QPSK/OQPSK 1/2, 3/4, 7/8

8PSK/16QAM 3/4, 7/8

Legacy Rates: 0.495, 0.793

>20Mbps

8PSK/16QAM

TPC 0.750

TPC 0.875
Decoder Options Reed-Solomon INTELSAT (DVB-S Optional)

Custom (N, K) Reed-Solomon
Descrambler CCITT V.35 or IBS (Others Optional)
Acquisition Range Programmable ±1 kHz to ±255 kHz
Sweep Delay Value 100 msec to 6000 seconds in 100 msec Steps
Plesiochronous Buffer
Size 0 msec to 64 msec
Centering Automatic on Overflow/Underflow
Centering Modes IBS: Integral Number of Frames

IDR: Integral Number of Multi-Frames
Clock Transmit, External, Rx Recovered or SCT (Internal)
Monitor and Control
Ethernet 10 BaseT/Remote RS-485/Terminal RS-232, Web Browser
DMD50 Drop and Insert (Optional)
Terrestrial Data 1.544 Mbps or 2.048 Mbps, G.732/733
Line Coding AMI or B8ZS for T1 and HDB3 for E1
Framing D4, ESF and PCM30 (PCM 30C) or PCM31 (PCM 31C) for E1
Time Slot Selection n x 64 contiguous or arbitrary blocks for Drop or Insert
D&I Open Network Satellite Overhead 6.6%
Time Slots TS1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31
EFFICIENT D&I Closed Network, Satellite Overhead 0.4%
Time Slots 1-31 Any Combination
Terrestrial Interfaces
DVB, ASI/SPI, HSSI, Ethernet 4 Port 10/100 Base-T, Gigabit Ethernet (10/100/1000), G703

T3/E3/STS1, HSSI/Ethernet 4 Port 10/100 Base-T, HSSI/G703 T1/E1/T2/E2
IDR/ESC Interface (Optional)
G.703 T1 (DSX1) 1.544 Mbps, 100 Ohm Balanced, AMI and B8ZS
G.703 E1 2.048 Mbps, 75 Ohm Unbalanced and 120 Ohm Balanced, HDB3
G.703 T2 (DSX2) 6.312 Mbps, 75 Ohm Unbalanced and 110 Ohm Balanced, B8ZS and B6ZS
G.703 E2 8.448 Mbps, 75 Ohm BNC, Unbalanced, HDB3
G.703 E3 34.368 Mbps, 75 ohms BNC, Unbalanced, HDB3
IBS/Synchronous Interface (Standard)
RS-422/-530 All Rates, Differential, Clock/Data, DCE
ITU V.35 All Rates, Differential, Clock/Data, DCE
RS-232 (DCE up to 200 Kbps)
Environmental
Prime Power 100 to 240 VAC, 50 to 60 Hz, 60 Watts Maximum 48 VDC (Optional)
Operating Temperature 0 to 50° C, 95% Humidity, Non-Condensing
Storage Temperature -20 to 70° C, 99% Humidity, Non-Condensing
Physical
Size 19"W x 19.5"D x 1.75"H

(48.26 cm x 48.89 cm x 4.45 cm)
Weight 8.0 Lbs (3.64 Kg)

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