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The DMD2050 provides highly advanced and
bandwidth-efficient forward error correction (FEC).
Advanced FEC options include Turbo Product Codes
(TPCs) and Low Density Parity Check (LDPC). Legacy
support for Viterbi, Trellis, Concatenated Viterbi
Reed-Solomon, and Sequential FEC are also included.
A complete range of modulation types is supported
including BPSK, QPSK, OQPSK, 8-PSK, 8-QAM, and
16-QAM.

Advanced FEC and modulation capabilities are 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
• Maximize throughput without using additional
  transponder resources
• Maximize availability (margin) without using
  additional transponder resources
• Enable use of a smaller BUC/HPA and/or
  antenna
• Or, a combination of the above to meet
  specific mission needs

Data rates range from 2.4 kbps to 52 Mbps and symbol rates from 4.8 ksps to 30 Msps.

The modem provides a standard MIL-STD-188-114 (EIA-530 / RS-422), serial interface. It can optionally be configured with EIA-613 (HSSI), G.703 (T1/E1/T2/E2 & T3/E3), DVB ASI/SPI and 10/100/1000 BaseT Ethernet Interfaces. Drop & Insert functionality is supported on the G.703 interface.

A dual IF interface supports low IF (52-88, 104-176 MHz), and L-band (950-2000 MHz) frequency ranges.

Cost-effective, ultra-high reliable systems are enabled in conjunction with the RCS-11 1:1 redundancy switch, and/or the RCS-20 M:N redundancy switch.

…for more Satellite Modems

Designed to handle extreme ratios of adjacent carrier power, the SFC1275A offers the highest standard input P1 dBm in the industry at -20 dBm. With a typical noise figure of 10 dB at 40 dB gain, the SFC1275A can receive signals below -110 dBm with an aggregate input power of -25 dBm. This represents a receive dynamic range in excess of 85 dB. At 40 dB of gain standard, or with the 60 dB gain option, the SFC1275A will easily integrate into any size earth station while eliminating the need for receive line amplifiers, even for installations that employ power splitters on the downlink.

Linearity of the converter is equally impressive. The SFC1275A boasts a two-tone IMD product of 60 dBc for a combined output power of 0 dBm.

Output P1 dBm of the converter is +19 dBm. In most installations, this allows IF power splitters to be used without the need for IF distribution amplifiers.

…for more on the SFC1275A Down Converter

The SFC1450A offers the highest standard output power of any rack-mount up converter available. With an output P1 dB in excess of +10 dBm, the SFC1450A may eliminate the need for line amplifiers in your next installation. Installation of the SFC1450A into any existing earth station is easily accomplished due to the presence of independently adjustable input and output attenuators that provide total gain control of 50 dB. The input attenuator optimizes the existing IF power applied to the converter to a level which guarantees optimal performance over 30 dB of input signal power. Output power is adjustable over 20 dB which further guarantees that spurious performance is maintained independently of up converter gain.

Linearity of the converter is equally impressive. The SFC1450A boasts a two tone IMD products of -46 dBc for a combined output power of 0 dBm. Phase linearity is maintained through an internal group delay equalizer that limits parabolic plus linear group delay to less than three nanoseconds across the band. Thus, the SFC1450A is ideally suited for multiple carrier or DVB uplinks where linearity and group delay distortion becomes critical.

… for more on the SFC1450A Up Converter

Designed to handle extreme ratios of adjacent carrier power, the SFC4200A offers the highest standard input P1 dBm in the industry at -19 dBm. With a typical noise figure of 10 dB at 40 dB gain, the SFC4200A can receive signals below -110 dBm with an aggregate input power of -25 dBm. This represents a receive dynamic range in excess of 85 dB. At 40 dB of gain standard, or with the 60 dB gain option, the SFC4200A will easily integrate into any size earth station while eliminating the need for receive line amplifiers, even for installations that employ power splitters on the downlink.

…for more on the SFC4200A Down Converter

The SFC6400A offers the highest standard output power of any rack-mount up converter available. With an output P1 dB in excess of +15 dBm, the SFC6400A may eliminate the need for line amplifiers in your next installation. Installation of the SFC6400A into any existing earth station is easily accomplished due to the presence of independently adjustable input and output attenuators that provide total gain control of 50 dB. The input attenuator optimizes the existing IF power applied to the converter to a level which guarantees optimal performance over 30 dB of input signal power. Output power is adjustable over 20 dB, which further guarantees that spurious performance is maintained independently of up converter gain.

… for more on the SFC6400A Up Converter