二手示波器TDS794D   Full-bandwidth HDTV signalsareprimarilyfound within the TV studio, running between HDTVcameras,VTRs,switchers, and conversion products. These componentvideosignals areusually transmitted as serial digital signals oncoaxor fiber-opticcable. The characteristics of these serialsignalsare specified bySMPTE 292M.

This application note describes how to use aDigitalPhosphorOscilloscope (DPO) to perform physical layer testingof a1.485Gb/s serial digital HDTV signal. The TDS794D was chosenforthisapplication because of its 2 GHz analog bandwidth and250GS/sequivalent-time sample rate. The CommunicationSignalAnalyzeroption is also used (for mask testing). Themeasurementsdiscussedhighlight some of the oscilloscope'scapabilities fordesigndebugging, signal characterization, andverification ofcompliancewith industry standards.

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