Baseband Video Testing With Digital Phosphor Oscilloscopes
Video signals are complex waveforms comprised of signals representing a picture as well as the timing information needed to display the picture. To capture and measure these complex signals, you need powerful instruments tailored for this application. But, because of the variety of video standards, you also need a general-purpose instrument that can provide accurate information - quickly and easily. Finally, to display all of the video waveform details, a fast acquisition technology teamed with an intensity-graded display give the confidence and insight needed to detect and diagnose problems with the signal.
This application note demonstrates the use of a Tektronix TDS700D-series Digital Phosphor Oscilloscope to make a variety of common baseband video measurements and examines some of the critical measurement issues.