Satcom Resources Blog » satellite modem

Comtech SLM-5650A Satellite Modem

craigschramm — Thu, 17 Nov 2011 16:46:33 +0000

Comtech EF Data’s SLM-5650A Satellite Modem is compliant with the strict requirements defined in MIL-STD-188-165A, modem types I, II, IV, V and VI for applications on DSCS, WGS and commercial satellites.

Data rates from 64 kbps to 155 Mbps and symbol rates from 32 ksps to 64 Msps are supported.

The modem provides standard MIL-STD-188-114 (EIA-530 / RS-422), and EIA-613 (HSSI) serial interfaces, and can be optionally configured to support G.703 and Low Voltage Differential Signaling (LVDS) serial interfaces. It can also optionally be equipped with a 4-port 10/100/1000Base-T Ethernet Network Processor module that supports switching, routing and advanced Quality of Service protocols.

The SLM-5650A can be integrated with the Vipersat Management System (VMS) to provide fully automated network and capacity management. An AES-256 TRANSEC module, compliant with the FIPS-140-2 NIST standard is also available as an option. All traffic (including overhead and all VMS control traffic) is encrypted when using the TRANSEC module.

Advanced forward error correction (FEC) capabilities are a Comtech EF Data standard feature. Viterbi, Trellis, Concatenated Reed-Solomon, Sequential, and Turbo Product Codes are all supported.

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

…for more Comtech EF Data Satellite Modems

Paradise PD155i Satellite Modem/IP Router

satcomresources — Tue, 30 Mar 2010 14:34:11 +0000

The Paradise PD155i 155Mbps IP Satellite Modem/ Router offers an extensive range of network management and bandwidth optimization features.

A 4-port Gigabit Ethernet switch, advanced routing and Quality of Service protocols are supported as part of the feature-rich IP functionality.

Traffic shaping allocates bandwidth in a controlled manner between competing data streams. This allows data services — including the satellite portion of the link — to be fully provisioned end-to-end rather than being simply ‘best effort’.

Large bandwidth reductions are achieved using a range of data compression and acceleration techniques. Paired Carrier (incorporating ViaSat’s patented PCMA technology) can further halve satellite bandwidth requirements.

State-of-the-art forward-error-correction (FEC) technology includes Turbo and LDPC. Lowlatency FastLink LDPC is attractive for lowdata- rate links. Single/multistream DVB-S2 is also supported.

Embedded satellite and IP diagnostic tools are included and are the most sophisticated available on the market.

The PD155i is fully compatible with all other Quantum-series modems in IP closed modes.

…for more Paradise Datacom Satellite Modems

Comtech Radyne DMD2050 Universal Satellite Modem

satcomresources — Mon, 11 Jan 2010 20:13:47 +0000

The Comtech Radyne DMD2050 Military Standard Universal Satellite Modem is designed to comply with the widest possible range of
U.S. Government and commercial standards and is compatible with a largest number of satellite modems in the industry.

This item is now configurable for easy on-line purchase!

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

Paradise QUANTUM Series PD20 IF and PD20L L-Band DVB-S2 Satellite Modems

satcomresources — Thu, 24 Sep 2009 15:57:13 +0000

The QUANTUM Series PD20 IFand PD20L L-band DVB-S2 IF Modems bring the bandwidth savings and robust benefits of DVB-S2 to traditional SCPC services such as IBS and Drop & Insert.

Paired Carrier technology overlays transmit and receive carriers reducing satellite bandwidth by up to 50%. Paired CarrierTM technology is patented by Viasat Inc. QUANTUM modems are fully backward compatible with Paradise Evolution modems when DVB-S2 and Paired Carrier are disabled.

…for more on Paradise Datacom Satellite Modems