New Technology Reduces Reliance on GPS Clock for DTT SFN Operation
ARG ElectroDesign, a leading developer of signal distribution products for the broadcast and telecommunications industries, will be showing its next generation software upgrade for the Media Combiner range of broadcast network adapters at IBC 2010 on stand 6.C28c. The upgrade features ARGâ€™s powerful new patent pending Acu-Sync technology which eliminates network jitter, making it possible to reliably feed Digital Terrestrial Television (DTT) Single Frequency Network (SFN) transmitter sites over telecommunication and IP networks without the need for a 10 MHz clock (GPS) while still conforming to Mega-frame Initialisation Packet (MIP) timing standards.
By not requiring an external 10 MHz reference clock, the Media Combiner upgrade also ensures that DTT SFN transmitters can function even when the local GPS clock is lost. In this case, the DTT transmitter defaults to its internal clock and service continues. This is in contrast to network adapters feeding transmitter sites that rely on a 10 MHz clock at both ends of a link, as these will cause service loss if either clock fails. In addition, unlike other technologies which rely on Dynamic Synchronous Transfer Mode (DTM) technology, the ARG Acu-Sync is not affected by Synchronous Digital Hierarchy (SDH) pointer adjustments.
ARGâ€™s Acu-Sync technology has been developed following extensive research undertaken by members of the companyâ€™s R&D team who studied the synchronisation requirements of DVB-T SFN distribution circuits. Investigations enabled them to identify how these applications are impaired by signal jitter or â€˜delay variationâ€™ as in the case of IP circuits and SDH pointer adjustments. The patent pending FPGA algorithm maintains the timing integrity of DVB-ASI over IP and indeed any SDH or Plesiochronous Digital Hierarchy (PDH) network without using expensive or unreliable reference clocks or complex time transfer techniques.
â€œOur products continue to be the preferred choice for serious DTT SFN applications,â€? said Mike Footer, Sales and Marketing Director, ARG ElectroDesign. â€œThe ARG Acu-Sync technology in the Media Combiner is suitable for use over virtually any type of network, ensuring DTT SFN service and coverage are maintained at all times.â€?
The new software upgrade for the Media Combiner range is available immediately direct from ARG and its global network of business partners. Existing customers can return their products to ARG for upgrades.
About ARG ElectroDesign Ltd
ARG designs and manufactures products for the television broadcast and telecommunication industries. The ARG product portfolio provides multi-programme transport stream primary distribution for broadcasters, IP/TV, digital terrestrial, mobile TV and broadband TV. The product range comprises highly powerful, cost-effective telecommunication technology for DVB-ASI and high speed data delivery across fibre optic, Ethernet, SDH or PDH networks. Services are delivered transparently with excellent reliability to points of secondary distribution such as TV transmitter sites, satellite earth stations, cable head-ends and IPTV heads.
Contact: Lynne Lambert
+44 7909 575932, Skype: lynne011