When I do CN0269 data acquisition and save data, I have the following problems. How can I solve them? Thank you for your reply.
I don't see any further information provided. Can you please describe your issues? Can you please share your setup and steps to recreate your issue?
Thank you for your help. I am testing the relationship between switching speed and setup time according to CN0269 circuit notes. The abscissa of the graph I gave is to indicate the switching speed, from 100Hz to 1MHz. But the note says that we should use LabVIEW to control EVAL-SDP-CB1Z, but I'm not sure. Does ADI provide any reference in this respect?
We created a LabVIEW program for the CN0269 that showcases the features and benefits of the CN0269. It's designed for a quick and easier evaluation of the CN0269 capabilities. It can be found here (ftp://ftp.analog.com/pub/cftl/CN0269/1.0.2/)
So the software ADI supports is that LabVIEW GUI, but that doesn't prevent you from creating your own software on a Microcontroller or other platform. ADI just will not support you in that development or troubleshooting if it doesn't work, nor are we responsible for anything that might happen to the CN0269 board if you violate any specs.
Maybe I didn't make it clear that I had installed the evaluation software. Only when I made Switching Speed and Settling Time Test Results on CN0269 circuit notes, the notes required that the even and odd channels of CN0269 be shortened respectively, and then the switching speed be changed from 100 Hz to 1 MHz. But when the evaluation software chooses the multi-channel acquisition mode, the maximum sampling rate can only reach 62.5KHz. How can I solve this problem? Or is it just that the even channel and the odd channel are shortened separately on the circuit note, but the single channel is still used to collect data? In addition, notes say that from 100Hz to 1MHz each 1KHz sampling, each frequency sampling 10 times, that is not to say that I need to do 10,000 data per graph, for me this is too much, is there any simple method?
When multi-channel acquisition is selected, the maximum acquisition rate per channel is 62.5KHz, and the single channel can reach 1MHz.
Or, can you tell me how I can get these maps? Thank you
So these results were taken with an earlier version of software where we hadn't bound the sampling rate to a maximum number. After we obtained this data, we wanted to optimize the software so that anyone who was using the software/hardware in combination would receive results that highlighted the 18-bit resolution along its specified errors.
We didn't want to have users trying to switch the channels at a high speed, and still "think" they could get a true 18-bit system. That is why the sampling frequency is limited in multi acquisition mode.
That is to say, I can't reproduce these graphs with this evaluation software now? Thank you for your reply.
Or can I install previous versions of the evaluation software to achieve my goal?
Unfortunately that version of the software doesn't exist any more since it was only used in test.
If you have LabVIEW, I did load up the source code for the evaluation software we provide. You could take the source and try tweaking it if you'd like, but just be aware that ADI will not support you in your software development. We provide those files as a courtesy for you to jump start your design work. We will always refer back to the functioning version of the LabVIEW executable as our supported software.
I hope this helps you in your venture.
Thank you very much for your help！
Mr. Brandon, Thank you very much for your help.the abscissa of this graph says the switching rate. Does it mean the sampling rate I set on the evaluation software? Does the ordinate indicate the difference between the actual voltage and the test voltage? This difference is represented by the LSB of ADC?
In addition, I would like to know how you got to these diagrams during the testing phase. According to the circuit notes, each point is tested ten times, totaling 1,000 points. How do you process so much data?