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The ,mask test, allows you to verify that a displayed waveform complies with industry-standards definitions for electrical waveforms. To comply with the industry standard, the input waveform must remain outside the shaded ,mask, regions. The ,mask testing, is available in Scale/,Mask, under the ,Eye,/,Mask, tab. The TDR uses the same format as Infiniium ...
18/10/2017, · Because mask tests can be so effective, it is very common for masks to be provided for common standards. Examples include Ethernet and FlexRay. The good news is that if your signal happens to be one where an industry standard mask is available, the job is very easy. Just load the mask into an oscilloscope that supports mask testing and you will quickly find errors.
These eye mask definitions specify transmitter output performance in terms of normalized amplitude and time in such a way to ensure far-end receivers can consistently tell the difference between one and zero levels in the presence of timing noise and jitter. The measurement instrument that verifies eye mask compliance is commonly referred to as a high-speed sampling oscilloscope.
This paper explains how to perform a CAN ,Eye,-diagram ,mask test, using oscilloscopes with CAN option and a guide to interpreting ,Eye,-diagram ,test, results. Enable browser cookies for improved site capabilities and performance.
An eye exam that includes a complete history of your overall health and your eye health can help your doctor diagnose the cause of your dry eyes. A test to measure the volume of your tears. Your doctor may measure your tear production using the Schirmer test. In this test, blotting strips of paper are placed under your lower eyelids.
Creating a proper CAN eye-diagram measurement on a scope’s display requires much more than just triggering on rising and/or falling edges. Eye-diagram mask testing is used in a broad range of today’s serial bus applications. An eye-diagram is basically an infinite persisted overlay of all bits captured by an oscilloscope to show when bits are valid.
Specifically, the PDF ,Eye, that is subject to ,mask testing, is the result of the convolution of the unbounded jitter and noise elements with the bounded probability distribution functions. Figure 2 Correlated ,Eye, Figure 3 Uncorrelated PDF . Figure 4 PDF ,Eye, Diagram.