Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent 5989-2003EN English _ 2014-08-01 _ PDF 5.71 MB c20140826 [10]

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


                              Application Note
Introduction

     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.

     Keysight Technologies, Inc. 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.


     Display intensity gradation can be extremely important when you are looking for signal anomalies,
     especially when you are viewing complex-modulated analog signals such as video, read-write disk
     head signals, and digitally controlled motor drive signals. Intensity gradation is also helpful in a wide
     variety of mixed-signal applications found in embedded microprocessor and microcontroller
     technologies common in the automotive, industrial, and consumer markets. But even when you are
     viewing purely digital waveforms, intensity gradation can show statistical information about edge
     jitter, vertical noise, and the relative occurrence of anomalies.

     Recently, all major digital oscilloscope vendors have begun to provide z-axis intensity gradation

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