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An international tender, called by LVRTC, to supply equipment for Latvian DVB-T network ended with the convincing Hannu Pro victory. Soon after the announcement of the tender results Hannu Pro started implementation of the first phase of this large scale project supplying and installing required equipment to ensure that in 2010 the 1st national DVB-T network (multiplex) and two Lattelecom networks (multiplexes) is available to 95% of Latvian population. This project is based completely on Grass Valley technologies. In the central broadcast station in Riga (head-end) eight (7+1 redundancy) ViBE EM2000 SD MPEG4 encoders and two (1+1 redundancy) NetProcessor 9030 systems will be installed to prepare the signals of the 1st national multiplex and two Lattelecom multiplexes for transmission to LVTRC's regional centres via an SDH network, which also provides the required SFN adaptation. Regional centres will host ViBE EM2000 encoders for encoding of regional programmes and NetProcessor 9040 systems to provide programme splicing with regional programmes as needed. The overall structure will also incorporate NetProcessor 9010 network adapters to pass the signal to DVB-T transmitters; MPEG4 decoders to support decoding to PAL and analogue TV reception during the transition period; an XMS/XMU network management system, which provides network administration and is configured to support redundancy operations. XMS/XMU system is integrated with a Granite Sentinel monitoring system, which provides uninterrupted monitoring and compliance to DVB-T standard (TR-101290) for the signals received from Lattelecom and ASI signals on multiplexer outputs, as well as controlling RF parameters (COFDM) before signals are passed to antennas. An electronic program guide is provided by a Grass Valley Jade system. All essential systems are designed to support full redundancy (1+1 or n+1). The entire system was designed by Hannu Pro and Grass Valley; Hannu Pro supplies and installs all equipment and provide support and software updates during warranty period. The market value for solutions implemented during the first and second phases of DVB-T introduction is close to EUR 3 000 000. During the second phase four additional DVB-T networks (multiplexes) will be deployed and in 2012 - at the time when DVB-T introduction will be finished - there will be seven DVB-T networks (multiplexes) in Latvia. »»» read also the official Grass Valley press release
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