Comtech EF Data DD240XR Rev Е - Manual (Page 11)

DD240XR High-Speed Digital Demodulator Introduction
MN-DD240XR – Rev. E 1-1
Introduction
1
1.0 Description
Radyne Corporation’s DD240XR family of High-Speed Demodulators is the ideal choice to meet
the exacting standards of high data-rate Video, Internet and Fiber Restoral Satellite Applications.
The DD240XR supports both DVB-S and DVB-S2 Broadcast Services. The DVB-S supports
QPSK, 8PSK and 16QAM applications with symbol rates up to 45 Msps and the DVB-S2 supports
QPSK, 8PSK and 16APSK applications with symbol rates of 2 to 45 Msps. With a variety of data
interfaces available, the DD240XR is configurable to meet high-speed satellite applications.
The powerful new onboard Monitor and Control (M&C) processor has the unique capability to
download firmware and enhance features from a field-changeable PCMCIA card. Offering
unprecedented flexibility, this feature represents a new level of Radyne Corporation’s outstanding
Customer Support. Additionally, features are added to the installed equipment base with extreme
ease, allowing the equipment to expand with changes in service while lowering initial installation
budgets.
The Demodulator offers a frequency-agile IF Input from 50 to 180 MHz (70/140), or 950 to 2150
MHz (L-Band) in 1Hz steps. Variable data rates for DVB-S (188 Mode) are from 2 Mbps to 145
Mbps and variable rates for DVB-S2 are from 1 Mbps to 160 Mbps.
Additional features include the choice of remotely interfacing through one of three onboard
connections: 10 BaseT/100 Base-T Ethernet, RS-485, or RS-232. The familiar Radyne Front
Panel (Figure 1-1) offers push-button control of all features and a backlit LCD display. Menus are
specifically designed for ease of use and quick online operation as well as changes in all
modulator configurations.
An optional 1:1 Redundancy Control Switch (RCS11) is available to provide the DD240XR with
superior system reliability.
Figure 1-1. DD240XR