Keysight - Oscilloscope Display Quality Impacts Ability to View Subtle Signal Details

Our thanks to Agilent for allowing us to reprint this article.


The quality of your oscilloscope's display can make a big difference in your ability to troubleshoot your designs effectively. If your oscilloscope has a low-quality display, you may not be able to see critical signal anomalies. A scope that is capable of showing signal intensity gradations can reveal important waveform details, including signal anomalies, in a wide variety of both analog and digital signal applications.

Agilent InfiiniVision oscilloscopes are engineered to give you the best signal visibility. With MegaZoom IV technology, InfiniiVision scopes are able to capture up to 1,000,000 waveforms per second, showing you more subtle signal details and infrequent events than other scopes.

The third dimension: intensity modulation

Engineers traditionally think of digital storage oscilloscopes (DSOs) as two-dimensional instruments that graphically display voltage versus time. But there is actually a third dimension to a scope: the z-axis. This third dimension shows continuous waveform intensity gradation as a function of the frequency of occurrence of signals at particular X-Y locations. In analog oscilloscope technology, intensity modulation is a natural phenomenon of the scope's vector-type display, which is swept with an electron beam. Due to early limitations of digital display technology, this third dimension, intensity modulation, was missing when digital oscilloscopes began replacing their analog counterparts. Now, it is making a comeback...

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