Comtech EF Data DMD-2050E - Manual (Page 31)

MN-DMD2050E Revision 2 1– 1
Chapter 1. Introduction
1.1 Overview
The new DMD2050E Satellite Modem (Figure 1-1) breaks new ground in flexibility and
performance. The modulator has the ability to interoperate with military standards based upon
MIL-STD-188-165A, MIL – STD-188-16B (Draft Standard), STANAG 4486 Edition 3, OM73 and
support commercial standards that include IDR, IBS and DVB. While covering data rates up to
52 Mbps and the ability to switch between spur-free 70/140 MHz operation to L-Band, this duplex
modem covers virtually all Military and Commercial Satellite IP, Telecom, Video and Internet
applications.
Figure 1-1. DMD2050E Universal Satellite Modem Front Panel
The DMD2050E provides highly advanced and bandwidth efficient forward error correction
(FEC). Advanced FEC options include Low Density Parity Check (LDPC), Turbo Product Codes
(TPCs) and 165B Turbo Codes. Legacy support for Viterbi, Trellis, Concatenated Viterbi
Reed-Solomon, and Sequential FEC are also included. A complete range of modulation types
supported include BPSK, QPSK, OQPSK, 8-PSK, 8-QAM, 16-QAM and 16-APSK.
Advanced FEC and modulation capabilities can be integrated with the revolutionary DoubleTalk ®
Carrier-in-Carrier ® bandwidth compression allowing for maximum state-of-the-art performance
under all conditions. This combination of advanced technologies enables multi-dimensional
optimization, allowing satellite communications users to minimize required satellite bandwidth and
maximize throughput without using additional transponder resources.