Welcome to SpacelinkNGT

Note: These details are preliminary.

The Spacelink^NGT Versatile High-Rate Modem (ERSDEM-3 VHRM) is one of the flagship products in the SpacelinkNGT range of Modem & TM/TC equipment of Satellite Services B.V. in The Netherlands.

The ERSDEM-3 is the successor of the ERSDEM-2.5 series. The ERSDEM products are specifically designed in response to market demand for affordable yet High-performance and Multi-Satellite capable High-Rate Modems and associated Ingest/ Level-0 data processing equipment.

The ERSDEM-3 incorporates the latest System-On-a-Programmable-Chip (SOPC) technology and is based on fully digital (de)modulation techniques. The unit supports BPSK, QPSK, OQPSK and 8-PSK modulations with the option for in-field upgrades to support additional modulation and coding schemes.

ERSDEM-3 supports three modes of operation:

• Single-channel high-rate mode
Supporting very high-rate demodulation from 100 to 500 Msym/sec
This mode includes supports for CCSDS 4D-8PSK TCM decoding/demodulation

• Single-channel legacy mode
Supporting high-rate demodulation from 6.25 to 110 Msym/sec
including support for legacy ERSDEM-2.5 satellite modes such as Terra / Aqua

• Multi-channel mode
Supporting 1 to 4 simultaneous channel demodulations using the same
single-board hardware
bitrates from 6.25 to 110 Msym/sec per channel (max 4 simultaneously)

The ERSDEM-3 supports single-channel QPSK modulation up to 1 Gbps and 4D-8PSK TCM decoding / demodulation at 2.5 and 2.75 bits/symbol spectrum efficiency with bitrates up to 1.1 Gbps.

The system operates from a 1.9 GHz IF frequency with an RF bandwidth of 600 MHz. In Multi-Channel mode.

As for the ERSDEM-2.5, the high-tech implementation of the ERSDEM-3 has allowed for a Single-Board implementation of a modulator / demodulator thus allowing compact and ruggedised system implementation in a range of mechanical / electrical solutions.

The modulator/demodulator module is controlled and monitored directly through Ethernet TCP/IP and each module supports multi-client Telnet, FTP, HTTP and IPC protocols.

ERSDEM-3 is based on the principle of being able to provide either raw (I/Q/Clk) data streams to support existing ground infrastructure or to support a so-called transport stream interface mode.

In this mode, the ERSDEM-3 automatically tags received data with a time-code (based on embedded GPS, IRIG-B or PPS) and Product Confidence Data (PCD). This includes RF, modem and baseband status that is tagged to the received data on programmable intervals/rates. The result is a single transport stream that is suitable for direct data transportation / ingestion and thus removes the need for special data ingestion / processing hardware.

Depending on the mode of operation, baseband interfaces supporting LVDS, ECL, Gigabit Ethernet and Gigabit-serial links are available.

Modular implementation

The ERSDEM-3 is implemented in a modular way. Each of the main functions of the unit, including the power supplies, are implemented as single plug-in modules. This allows a modular configuration of the unit in accordance with the customer or system requirements.

Integration with other products

The unit can be used stand-alone as well as integrated with other Satellite Services B.V. products for High-rate baseband TM processing and simulation. (As readily supported with the ERSDEM-2.5 Di & TS.)

For IF frequency conversion, 700-750 MHz legacy IF and X-band (7.9 - 8.5 GHz) up/down converters will also become available.

For backward compatibility, the ERSDEM-3 is equipped with baseband serial
and parallel LVDS interfaces as well as supporting an optional ECL converter.

The LVDS data and PCD interfaces are also backwards compatible with the existing ERSDEM-2.5 and other SSBV Data Ingestion and Level-0 Interfacing products.

The innovative Transport Steam Interface mode is an industry-first implementation of data time- and status tagging and data multiplexing. This allows interfacing to a wide range of back-end / baseband interfaces without the need for additional data processing at hardware level.

Initially supported baseband interfaces include: Parallel LVDS, Gigabit Ethernet, and Copper / Fibre based Gigabit serial interfaces with complimentary PCI-Express based interface cards.

Special versions of the ERSDEM-3 include an integrated Data Ingestion / Processing system option with support for a range of industry standard DAS / NAS solutions.

ERSDEM Remote Control & Monitoring Software (CMS)

To simply integrate and operate the ERSDEM, each unit is provided with remote control software that can be run on a standard (windows™) PC.

All configuration settings including real-time status of the Demodulator, Test Modulator and Interface Module(s) can be controlled and monitored by means of this software. A real-time (multi-channel) demodulator scatter diagram application is also included.

Click on the image to download the datasheet.



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Products	Ersdem 3

High Rate Modems: Ersdem 3 Ersdem 2.5 TM/TC for AIT: TM/TC IPU SE 985 TM/TC for Operations: GS-IMBU TTC-IMBU TM/TC Simulation: PSS-IMBU
	Overview Technical Details Photo's Datasheet Note: These details are preliminary. The Spacelink^NGT Versatile High-Rate Modem (ERSDEM-3 VHRM) is one of the flagship products in the SpacelinkNGT range of Modem & TM/TC equipment of Satellite Services B.V. in The Netherlands. The ERSDEM-3 is the successor of the ERSDEM-2.5 series. The ERSDEM products are specifically designed in response to market demand for affordable yet High-performance and Multi-Satellite capable High-Rate Modems and associated Ingest/ Level-0 data processing equipment. The ERSDEM-3 incorporates the latest System-On-a-Programmable-Chip (SOPC) technology and is based on fully digital (de)modulation techniques. The unit supports BPSK, QPSK, OQPSK and 8-PSK modulations with the option for in-field upgrades to support additional modulation and coding schemes. ERSDEM-3 supports three modes of operation: • Single-channel high-rate mode Supporting very high-rate demodulation from 100 to 500 Msym/sec This mode includes supports for CCSDS 4D-8PSK TCM decoding/demodulation • Single-channel legacy mode Supporting high-rate demodulation from 6.25 to 110 Msym/sec including support for legacy ERSDEM-2.5 satellite modes such as Terra / Aqua • Multi-channel mode Supporting 1 to 4 simultaneous channel demodulations using the same single-board hardware bitrates from 6.25 to 110 Msym/sec per channel (max 4 simultaneously) The ERSDEM-3 supports single-channel QPSK modulation up to 1 Gbps and 4D-8PSK TCM decoding / demodulation at 2.5 and 2.75 bits/symbol spectrum efficiency with bitrates up to 1.1 Gbps. The system operates from a 1.9 GHz IF frequency with an RF bandwidth of 600 MHz. In Multi-Channel mode. As for the ERSDEM-2.5, the high-tech implementation of the ERSDEM-3 has allowed for a Single-Board implementation of a modulator / demodulator thus allowing compact and ruggedised system implementation in a range of mechanical / electrical solutions. The modulator/demodulator module is controlled and monitored directly through Ethernet TCP/IP and each module supports multi-client Telnet, FTP, HTTP and IPC protocols. ERSDEM-3 is based on the principle of being able to provide either raw (I/Q/Clk) data streams to support existing ground infrastructure or to support a so-called transport stream interface mode. In this mode, the ERSDEM-3 automatically tags received data with a time-code (based on embedded GPS, IRIG-B or PPS) and Product Confidence Data (PCD). This includes RF, modem and baseband status that is tagged to the received data on programmable intervals/rates. The result is a single transport stream that is suitable for direct data transportation / ingestion and thus removes the need for special data ingestion / processing hardware. Depending on the mode of operation, baseband interfaces supporting LVDS, ECL, Gigabit Ethernet and Gigabit-serial links are available. Modular implementation The ERSDEM-3 is implemented in a modular way. Each of the main functions of the unit, including the power supplies, are implemented as single plug-in modules. This allows a modular configuration of the unit in accordance with the customer or system requirements. Integration with other products The unit can be used stand-alone as well as integrated with other Satellite Services B.V. products for High-rate baseband TM processing and simulation. (As readily supported with the ERSDEM-2.5 Di & TS.) For IF frequency conversion, 700-750 MHz legacy IF and X-band (7.9 - 8.5 GHz) up/down converters will also become available. For backward compatibility, the ERSDEM-3 is equipped with baseband serial and parallel LVDS interfaces as well as supporting an optional ECL converter. The LVDS data and PCD interfaces are also backwards compatible with the existing ERSDEM-2.5 and other SSBV Data Ingestion and Level-0 Interfacing products. The innovative Transport Steam Interface mode is an industry-first implementation of data time- and status tagging and data multiplexing. This allows interfacing to a wide range of back-end / baseband interfaces without the need for additional data processing at hardware level. Initially supported baseband interfaces include: Parallel LVDS, Gigabit Ethernet, and Copper / Fibre based Gigabit serial interfaces with complimentary PCI-Express based interface cards. Special versions of the ERSDEM-3 include an integrated Data Ingestion / Processing system option with support for a range of industry standard DAS / NAS solutions. ERSDEM Remote Control & Monitoring Software (CMS) To simply integrate and operate the ERSDEM, each unit is provided with remote control software that can be run on a standard (windows™) PC. All configuration settings including real-time status of the Demodulator, Test Modulator and Interface Module(s) can be controlled and monitored by means of this software. A real-time (multi-channel) demodulator scatter diagram application is also included. Click on the image to download the datasheet.