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DMD50 Universal Satellite Modem
Introduction
This chapter provides an overview of the DMD50 Universal Satellite Modem. When describing
the equipment, it may be referred to as "the modem", or "the unit".
1.0 Overview
The Radyne Universal Satellite Modem (Figure 1-1) offers the best features of a sophisticated
programmable IBS/IDR and Closed Network Modem, at an affordable price.
Figure 1-1. Universal Satellite Modem Front Panel
This versatile equipment package combines unsurpassed performance with numerous user-
friendly Front Panel Programmable Functions. The unit provides selectable functions for different
services: Intelsat IDR and IBS, as well as closed networks. All of the configuration and Monitor
and Control (M&C) Functions are available at the Front Panel. Operating parameters, such as
variable data rates, FEC Code Rate, modulation type, IF Frequencies, IBS/IDR Framing and
interface type can be readily set and changed at the Front Panel by earth station operations
personnel.
The modem operates at all standard IBS and IDR Data Rates up to 8.448 Mbps. Selection of any
data rate is provided over the range of 2.4 Kbps to 52 Mbps in 1 bps steps.
For applications requiring system redundancy, the Modem may be used with the Radyne RCS11
1:1 Redundancy Switch or the RCS20 M:N (N < 9) Redundancy Switch. An Internal Engineering
Service Channel Unit is available to provide voice, data, and alarms for Intelsat IDR applications.
A full range of Industry Standard Interfaces are available. Interface types are selectable from
V.35, RS-232, RS-422/-530, ITU G.703, HSSI, ASI, DVB/M2P and Ethernet Bridge.
1.1 Configurations
The unit can be configured in the following ways:
features and options that are installed when the unit is ordered
feature upgrades
hardware options that are installed to a unit that is sent to a Radyne facility
hardware options that the user can install at their own location
TM118 – Rev. 1.1
Introduction
1
1-1
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