Date: 04/10/2012

Rohde & Schwarz releases MLx transmitter to improve DVB-T/DVB-T2 network coverage

Rohde & Schwarz has announced a modular MLx low-power transmitter to help network operators optimize the coverage of their DVB-T/DVB-T2 networks. The R&S MLx is also suitable for closed, small infrastructures such as those in remote areas or public buildings, giving the broadcaster the highest level of freedom when choosing an installation site.

The R&S MLx UHF low-power transmitter is designed for the lowest power classes (i.e. up to 10 W) and integrates up to six transmit channels in one system. The transmitter possesses flexible configuration options for various applications and receiving conditions and thus is suitable use in areas without specific broadcasting infrastructure and even for installation in the smallest of outdoor enclosures. The MLx is a compact transmitter with a depth of just 250 mm and all interfaces can be accessed on the transmitter’s front panel. The transport stream can be fed via coaxial cable or satellite. The R&S MLx supports UMTS for monitoring broadcast operations. In addition, it produces very little dissipated heat and is equipped with convection cooling.

The autonomous transmitter unit is best for rural areas with poor reception such as mountain valleys and islands, as well as for small private networks at trade fairs, shopping centers or universities. Even in city centers with many high-rise buildings, the R&S MLx can boost network coverage. The R&S MLx supports echo cancellation with levels that are up to 24 dB higher than the input signal as needed by the network operators for SFN operation. With three echo windows and seven echo detection speeds, it offers a diverse range of optimization options to improve digital TV reception.

The compact, 5 HU cabinet contains any combination of transmitters, gap fillers and retransmitters with power classes of 1 W, 5 W or 10 W and permits them to be operated simultaneously, offering flexibility for any application. The redundancy concept is both fail-safe and customizable, from 5+1 redundancy all the way to three individual modules in passive standby. Mixed DVB-T/H and DVB-T2 N+1 systems are also supported.

An efficient management system lets users control all components centrally. The intuitive, web-based interface gives a quick overview of the status of the integrated modules, the built-in N+1 switches and the GPS and satellite receivers.

The R&S MLx is available now.

Source: Rohde & Schwarz