Comtech DMD20 LBST L-Band Satellite Modem

FEATURES

• DoubleTalk Carrier-in-Carrier bandwidth compression

• Web browser interface

• FSK M&C channel for smart BUCs

• Integrated 10 MHz high-stability reference

• Programmable 13, 15, 18, or 20 VDC for LNB

• Optional 24 or 48 VDC for up to 10 W BUC

• 950 to 2050 MHz L-Band TX/RX operation

• BPSK/QPSK/OQPSK/8PSK/8-QAM/16-QAM operation

• 2.4 kbps to 20 Mbps, 1 bps steps

• Configuration, monitor and control features full user- programmable

• FEC – Viterbi, Reed-Solomon, Sequential, Trellis, TPC, Low Density Parity Check Code (LDPC)

• Excellent spurious performance

• Fully compliant with IESS-308/309/310/314/315

• Optional DVB to EN301-210 and EN300-421

• Industry-standard universal interface module

• Standard features include: Reed-Solomon, Asynchronous Overhead, automatic uplink power control and CM701 compatible satellite control channel

• SCPC / MCPC Link

Category:

Product Description

Overview

The DMD20 LBST L-Band Satellite Modem breaks new ground in flexibility, operation and cost. With standards including IDR, IBS and DVB, and covering data rates up to 20 Mbps, this 1RU duplex modem covers virtually all your Satellite IP, Telecom, Video and Internet applications. DMD20 LBST now offers DoubleTalk® Carrier-in-Carrier® bandwidth compression. DoubleTalk Carrier-in-Carrier, based on patented “Adaptive Cancellation” technology, allows transmit and receive carriers of a duplex link to share the same transponder space. DoubleTalk Carrier-in-Carrier is complementary to all advances in modem technology, including advanced FEC and modulation techniques. As these technologies approach theoretical limits of power and bandwidth efficiency, DoubleTalk Carrier-in-Carrier utilizing advanced signal processing techniques provides a new dimension in bandwidth and power efficiency.

The extensive list of software options allows for configuring the modem for today’s needs while covering tomorrow’s plans. These options can be purchased and then activated in seconds via the front panel. Additional hardware options like Turbo Product Code (TPC), interface expansion, high-stability and DC operation complete the modem’s dynamic feature coverage. This modem can be stocked at its minimum configuration (and cost) locally for immediate distribution. Then configure on-site, allowing huge savings in time and dollars with just-in-time feature installation. The DMD20 LBST’s remote control via the RLLP (Radyne Link Level Protocol) 10Base-T SNMP Ethernet or web browser interfaces, include control of all the modem’s features plus software maintenance. Additionally, the two-line backlit LCD can be supplemented with terminal software or a standard web browser running on a PC or laptop. The modem presents its entire monitor and control functions on the big screen. Supported by an extensive line of redundancy switches, converters, encoders and decoders, the DMD20 LBST can be built into any satellite requirement. Compatibility with current modems, such as the DMD2401 and DMD15, are maintained for seamless substitution and addition to your existing systems.

The DMD20 LBST FSK Communications Link allows the full use of all supported smart BUCs monitor and control parameters. From the front panel, a quick status will be displayed, and the most commonly used control parameters can be modified. Additionally, the FSK Communications Link will be accessed by the DMD20 LBST terminal port, remote port, and the Ethernet port (Web browser/SNMP). From any of these connections, the operator can issue any valid ASCII command or request to the smart BUC. Multiple ports can be used simultaneously without affecting the performance of the system. Carrier-in-Carrier® is a Registered Trademark of Comtech EF Data DoubleTalk® is a Registered Trademark of Raytheon Applied Signal Technology

Specification

 Comtech DMD20 LBST L-Band Satellite Modem Datasheet

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