Analyzer software checks out ATSC mobile DTV networks - Embedded.com

Analyzer software checks out ATSC mobile DTV networks

The Rohde & Schwarz ETL TV analyzer has been enhanced with a set of functions developed for ATSC Mobile DTV (ATSC MDTV) and which enable the analyzer  to perform all required measurements for installing, commissioning and maintaining ATSC MDTV networks using a single instrument.

The TV analyzer can also be used to optimize ATSC MDTV single-frequency networks (SFNs).  

The Advanced Television Systems Committee (ATSC) MDTV extension to the standard for digital TV broadcasting for North America and South Korea allows digital television to be received on smartphones and other handhelds.

The R&S ETL-K320 software option enables the TV analyzer to determine whether transmitters function in conformance with the ATSC MDTV specifications and whether network coverage is complete.

For coverage measurements in the field, Rohde & Schwarz offers the R&S BCDRIVE software. Data measured at a number of stations can be analyzed in detail and displayed in straightforward fashion using the software.

ATSC MDTV networks can also be set up as single-frequency networks. SFNs provide more stable broadcasting reception, since all transmitters in a network broadcast signals on only one frequency. Better coverage of the broadcast area is achieved with multiple powerful transmitters, each operating on a different frequency.

To optimize SFNs, Rohde & Schwarz has developed and patented a unique measurement method: The R&S ETL equipped with the R&S ETL-K321 software option allows users to precisely determine the frequency offsets of all transmitters in a network with a single measurement. First, the R&S ETL defines a reference transmitter. At a central point in the SFN, it then measures the frequency offset between the other transmitters and the reference. Users get all the information they need to align the transmitters. This differs from today’s conventional methods, where each transmitter must first be measured individually on site before the transmitters can be aligned with each other in a subsequent step.

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