TV analyser measures T-DMB, DAB signals in realtime

Rohde & Schwarz offers a new option for its ETL TV analyser for the Digital Audio Broadcasting (DAB) and Terrestrial Digital Multimedia Broadcasting (T-DMB) standards.

The extensive signal analysis capabilities of the R&S ETL enable transmitter operators, transmitter manufacturers and regulatory authorities to selectively detect error sources, enabling them to eliminate the causes quickly in real time.

The new R&S ETL-K250 option features a modulation error ratio of greater than 40dB that allows precise testing of high-grade signal sources such as transmitters and modulators. Channel impulse response and constellation diagram are created in real time. This enables users to swiftly evaluate signal quality on site when performing transmitter and coverage measurements. Plus, all DAB or T-DMB programs and data services are made visible on the instrument at a glance. The R&S ETL also provides an ETI interface to transfer the demodulated transport stream to external equipment, where it can be analysed and further processed if necessary.

T-DMB is used to transmit TV and radio programs as well as data to mobile receivers such as cell phones, handhelds or pocket PCs. R&S has already made a key contribution to testing T-DMB in practice. The standard is no longer restricted to Asia, and network operators are investing in such transmission systems worldwide. DAB continues to gain ground as well. More than 40 countries currently use this standard.

The ETL-K250 option optimises the R&S ETL TV analyser for acceptance, maintenance and service of T-DMB/DAB transmitters, quality assurance applications in transmitter test shops and coverage measurement in transmitter networks. The ETL-K250 is now available.