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2 demodulator – Comtech EF Data DMD-2050E User Manual

Page 176

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DMD2050E Universal Satellite Modem

Technical Specifications

MN-DMD2050E Revision 2

7–2

Modulator Specifications

Turbo (16-QAM)

{3/4, 7/8} ≤ 20Mbps

DVB VIT

{2/3, 5/6}

DVB Trellis

{3/4, 5/6, 7/8, 8/9}

LDPC (BPSK)

{1/2}

LDPC (OQPSK/QPSK)

{1/2, 2/3, 3/4}

LDPC (8-PSK/8-QAM)

{2/3, 3/4}

LDPC (16-QAM)

{3/4}

STANAG Turbo (B/QPSK)

{1/2, 2/3, 3/4, 7/8, 19/20, None}

STANAG Turbo (8-PSK)

{1/2, 2/3, 3/4, 7/8, 19/20, None}

STANAG Turbo (16-APSK)

{1/2, 2/3, 3/4, 7/8, 19/20, None}

Outer Encoder Options

Reed-Solomon INTELSAT (DVB Optional)

Custom (N, K) Reed-Solomon

Data Clock Source

Internal, External, Rx Recovered

Internal Stability

5 x 10

-8

7.2 Demodulator

Demodulator Specifications

Demodulation

BPSK, QPSK, OQPSK, 8-PSK, 8-QAM, 16-QAM, 16-APSK

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, 50 Ohm (75 Ohm Optional)

L-Band, 50 Ohm

Connector

TNC, 50 Ohm

SMA, 50 Ohm, L-Band

Return Loss

IF, 1.5:1

L-Band, 2.0:1

Spectrum

MIL-188-165A, INTELSAT IESS 308/309/310, DVB

Input Level

-55 to +10 dBm

and 10 log (Symbol Rate) -120 dBm / Hz, SR < 2500 k

Total Input Power

+20 dBm or +40 dBc (the Lesser)

FEC
Viterbi,

{1/2, 3/4, 7/8, None} K = 7

Sequential

{1/2, 3/4, 7/8}

CSC

{3/4}

Trellis (8-PSK)

{2/3}

Turbo (BPSK)

{21/44,5/16} ≤ 20Mbps

This manual is related to the following products: