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Slow Data refresh DASYLab 2016

Dear Forum,

I am quite new to DASYLab so I don't know what exactly I am doing wrong.

When I create a simple DASYLab file consisting of a Sinus generator and a digital display or Y/t diagram, the data only refreshes about twice or thrice a second. What I want is a constant flow of data that is being visualized instead of data that refreshes slowly.

I have already played around with the sampling rate and blocksize but with no results. The computer is by now means underequipped hardwarewise.

Thanks in advance for anyone helping.

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The Y/t Chart displays complete blocks of data at a time, then refreshes to display the next block.  

 

It serves well for "fast" data. The block size/sample rate ratio will determine the refresh rate. If your block size is 100 and the sample rate is 1000, it should refresh every 100/1000 of a second, or every 100 ms. 

 

If your block size/sample rate ratio is too small (depends on the computer), then the Y/t Chart may not be able to keep up. I've also seen an issue with the Chart Recorder if you have a block interval of 1 ms or less. Even a good computer won't help.

 

If your block size and sample rate are very large (block size greater than 32K), there is a known problem with the Y/t Chart in DASYLab 2016. See the "New in this release" section of the online help for more information. DASYLab 2020 addressed some of the issues. 

 

The Y/t Chart can be configured to display multiple blocks at a time. If you display 5 blocks, it waits for all five. You can configure a Wiper or Fast Recorder mode if your block size is greater than 256. 

--cj --DASYLab Pro -- Retired --- I am no longer employed by NI or Measurement Computing. My opinions are just that, seasoned by 25+ years of working with DASYLab. Please contact www.MeasX.com or www.mccdaq.com for active support options.
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