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DAB/DAB Plus/T-DMB Signal Analysis Toolkit


The MAXEYE Technologies Digital Video Broadcasting Analysis Toolkit extends LabVIEW tools and functions with National Instruments RF Signal Analyzer (NI RFSA) and NI USRP to analyze digital audio and video broadcasting test signals that conform to their respective standard specifications. This toolkit offers standard based test solution for designing, evaluating and manufacturing Digital Audio Broadcasting (DAB and DAB Plus), Terrestrial Digital Multimedia Broadcasting (T-DMB) equipment's. The original DAB specification is based on the ETSI standard EN 300401. DAB Plus enhancement specification is based on ETSI TS 102563 standard. T-DMB is based on the ETSI standards TS 102427 and TS 102 428.

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The MAXEYE Technologies DAB analysis toolkit provides standard based modulation accuracy, power measurements and spectral measurements to help engineers evaluate, design and manufacture DAB transmitters, amplifiers, tuners, repeaters, modulators and gap-fillers. It is an ideal tool for analyzing the signal quality of the transmitted signal. The Toolkit provides various measurement traces to enable engineers to analyze, troubleshoot and validate the transmitter signal issues. The toolkit measurements can be used to calibrate the DAB transmitter components. EVM vs Subcarriers and EVM vs Symbols enable the time and frequency domain analysis of the transmitted signal to identify the issues in it. The channel frequency response trace gives the spectral flatness of the RF front end.


The toolkit modulation, coding and other parameters can be easility configured using the LabVIEW API VIs.


Measurements


  • Modulation Accuracy Measurements: Data MER, Peak MER, Data EVM, Peak EVM, Peak EVM Symbol Position, Constellation Trace, Channel Frequency Response (Spectral Flatness), EVM vs Subcarriers, EVM vs Symbols, MER vs Subcarriers, MER vs Symbols. Frequency Offset, Clock Offset, RMS Magnitude and Phase Error Measurements.
  • Time domain Average and Peak Power Measurements.
  • IQ Impairment Measurements: IQ Gain Imbalance, Quadrature Skew, IQ offset.
  • Spectral Measurements: Channel Power, Adjacent Channel Powers, Spectral Emission Mask Trace, Spectral Emission Mask Margin.
  • Extraction of Signal Parameters.


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