Dear mirtaji65, > Your solution for converting X-axis from voltage to time works exactly. Great! Thank you for letting us know! [quote userid="493365" url="~/cadence_technology_forums/f/custom-ic-design/47205/calculator-dnl-inl-dac/1372060"][/quote] But why do I have to sample the waveform by use > when i want to use INL and DNL function ,why delay of INL function doesn't work itself, Is this a software bug? First, I do not work for Cadence and hence cannot really respond to your comment about the behavior of INL. However, the INL function, as it is documented, does not provide the x-axis as a function of time (which is what I assume you want). Hence, the "workaround" using the value() function. [quote userid="493365" url="~/cadence_technology_forums/f/custom-ic-design/47205/calculator-dnl-inl-dac/1372060"]This method is not suitable if I want to use the analysis parameter[/quote] Sorry, I don't understand exactly what you mean by this comment! You can use this methodology in an Explorer/Assembler expression through the use of an ocean script. This is documented at URL: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nXTvEAM&pageName=ArticleContent and https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nXS2EAM&pageName=ArticleContent Hence, you may define the steps in an ocean script and add the ocean script as an Explorer/Assembler output. I hope this helps mirtaji65, Shawn
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