When a mask is selected from a menu, the mask is displayed on the TDS screen. Readouts on the TDS display indicate where the mask hits occur and how many occur. Mask testing provides a convenient and reliable method for verifying the compliance of serial video signals to industry standards. Conclusion Using DPO technology, the TDS794D acquires orders of magnitude more signal data than a traditional oscilloscope can. For mask testing, this improvement in display sample density translates into more data acquired in less time.
Eye diagrams that once took minutes to accumulate now take only seconds.
Histograms can be done in seconds as well. Finally since more data is acquired in less time, the accuracy of many statistical measurements is improved. In this application note, we've described the use of a Tektronix TDS794D Digital Phosphor Oscilloscope to debug video designs, quickly and easily verify compliance of a serial digital HDTV signal, and characterize signal jitter. Inc. All rights reserved.