Datum M7L/LT L Band Satellite Modem with M70/D70 High Speed DVBS2X Card Sets

Description

Datum Systems introduces advanced DVB-S2/S2X capability in the M7 series. This product combines state-of-the-art performance in a platform that is versatile, compact, highly efficient, and costs less to own and operate.

System Architectures Supported

• Point-to-Point, Point-to-Multipoint,
• Mesh, Unicast & Multicast

DVB-S2 and DVB-S2X Capability – Datum now offers DVB-S2 and DVB-S2Xcapability. The M7LT with M70 / D70 Cards allows optimised operation with the most efficient satellite data transmission solution. Datum supports both DVB-S2 modulation and also the recently standardised DVB-S2X extensions. DVB-S2X significantly improves satellite capacity by using much ner steps between modulation coding combinations (modcods) and allowing Filter Roll-O options down to 5%. DVB-S2X can improve spectral efficiency up to 50% over DVB-S2. Datum features Symbol Rates up to 72 MHz to allow full utilisation of wide transponders with data rates up to 350 Mbit/s. This configuration supports Filter Roll-Offs of 5%, 10%, 15%, 20%, 25%, 30%, 35%compliant with the standards. See our Advanced Filter Shaping White Paper for more information on the advantages of Low Filter Roll-Off.

Adaptive Coding & Modulation (ACM) – Datum’s M7LT fully supports ACM. This is the capability of a pair of modems to adjust their modcods to the best available case for the satellite link conditions. ACM works for the cases where the data rate can be variable. This is a perfect fit for Ethernet operation. Satellite links were historically backed of significantly to account for Rain Fade and Inclined Orbit operation. ACM gives back that lost capacity. The data rate in each direction is maximised by having the modems exchange small information packets that tell the distant end what modcod will maximise the capacity. This is done seamlessly when enabled. The unit can be set to utilise either DVB-S2 modcods or DVB-S2X (which includes DVB-S2) for better capacity

Smart Carrier Canceller – Smart Carrier is a patented advanced second generation carrier canceller which allows 2 similar carriers to occupy the same transponder spectrum, but is different from other cancellers in that it is a baseband canceller instead of an IF canceller. It allows excellent performance with easy setup and no additional cabling. Smart Carrier is compatible with all Datum modulation types and FECs, and is well suited to be used with DVB-S2 and DVB-S2X Sharp Roll-Off factors all the way down to 5%. Datum’s technique provides improvement in the Shannon Capacity of ~ 2 dB, which is ~50 % increase in the fundamental channel capacity.

SpacePath Communications is a fast growing British Company, specialising in the design, manufacture and support of satellite uplink amplifiers and sub-systems. Based in the United Kingdom, SpacePath manufacture and design a wide range of high-power travelling wave tube amplifiers (TWTA), redundant system controllers and sub-systems. SpacePath also offer a comprehensive range of solid state amplifiers (SSPA) providing small, lightweight, efficient power solutions covering all uplink frequencies.