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Radyne DMD20 Universal Satellite Modem

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  • Data Rates 2.4 kbps to 20 Mbps
  • Excellent Spurious Performance
  • Fast Acquisition
  • DoubleTalk Carrier-in-Carrier


SKU: SATRES-8941

Modulator
Modulation BPSK, QPSK, and OQPSK (8PSK/8QAM, 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 950 to 2050 MHz in 1 Hz Steps

L-Band, 50 Ohm
Connector BNC, 75 Ohm

SMA, 50 Ohm, L-Band
Return Loss IF, 20 dB Minimum

L-Band, 14 dB Minimum
Output Power 0 to -25 dBm
Output Stability

    IF

    L-Band


±0.5 dB Over Frequency and Temperature

±1.0 dB Over Frequency and Temperature
Output Spectrum Meets IESS 308/309/310/DVB-S Power Spectral Mask
Spurious

    In-Band

    Out-of-Band


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: 5/16, 21/44

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

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

Legacy Turbo Rates: 0.495, 0.793

LDPC (Optional)

BPSK: 1/2

QPSK/OQPSK: 1/2, 2/3, 3/4

8PSK/8QAM: 2/3, 3/4

16QAM: 3/4
Outer Encoder Options Reed-Solomon INTELSAT (DVB Optional)

Custom (N, K) Reed-Solomon (Optional)
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: 20 dB Minimum

L-Band: 14 dB Minimum
Spectrum Intelsat IESS 308/309/310/DVB-S Compliant
Input Level 10 x log (Symbol Rate) – 100, ±12 dB
Total Input Power -10 dBm or +40 dBc (The Lesser) @ 256 Kbps
FEC
Viterbi, K=7 at 1/2, 3/4 and 7/8 Rate,

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

Trellis 2/3

Turbo Product Code (Optional)

BPSK: 5/16, 21/44

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

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

Legacy Turbo Rates: 0.495, 0.793

LDPC (Optional)

BPSK: 1/2

QPSK/OQPSK: 1/2, 2/3, 3/4

8PSK/8QAM: 2/3, 3/4

16QAM: 3/4
Decoder Options Reed-Solomon Intelsat (DVB 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 Base-T/Remote RS-485/Terminal RS-232, Web Browser
DMD20 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, QUAD E1

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 Line Codes
G.703 E1 2.048 Mbps, 75 Ohm Unbalanced and 120 Ohm Balanced, HDB3
G.703 T2 (DSX2) 6.312 Mbps, 75 Ohm Unbalanced, B8ZS Line Code and 110 Ohm

Balanced, B6ZS Line Code
G.703 E2 8.448 Mbps, 75 Ohm BNC, Unbalanced, HDB3 Line Code
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)
DoubleTalk Carrier-in-Carrier
Delay Range 0 to 300 ms
Power Spectral Density Ratio (Interferer to Desired) BSPK/OQPSK/QPSK/8-PSK/8-QAM: -7 dB to +10 dB 16-QAM: -7 dB to +7 dB
Maximum Symbol Rate Ratio 3:1 (TX:RX or RX:TX)
Eb/No Degradation 0 dB Power spectral density ratio

BPSK/QPSK/OQPSK: 0.6 dB

8-QAM: 0.7 dB

8-PSK: 0.8 dB

16-QAM: 0.9 dB
Satellite Restrictions Satellite in “loop-back” mode (i.e., the transmit station can receive itself)

“Non-processing” satellite (i.e., does not demodulate or remodulate the signal)
Environmental
Prime Power 100 to 240 VAC, 50 to 60 Hz, 40 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” x 1.75” x 16” Deep

(48.26 cm x 40.64 cm x 4.45 cm)
Weight 6.5 Pounds (3.0 Kg)

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