Hi,
I've seen a few topics under metrology about oscilloscopes in general, hopefully this is the right place, otherwise please let me know.
So, I've a Multimetrix DSO (2025 model, I agree that it may not be a well known one, but these days the innards of many instruments are the same, just branded differently),
it can save data to USB as CSV or DAV files.
I have done pretty basic DSO stuff, capturing some one shot data at slow time base, putting it into "stop", zooming in the signal by changing the time base and time offset. So far so good.
I saved the data to CSV but I notice the files have only 16K points, so I'm not getting all of the signal I can explore on the scope itself.
The signal is not periodic so I'm sure the data must be in memory somehow.
Question: Does that kind of behaviour rings a bell to anyone ? Considering I can zoom into the signal, there must be many more points somewhere in the scope's memory, right ?
I also saved to another format, .DAV, and the file is a bit larger, but still under 64Kbytes, and does not look compressed, so still may be lacking points, and I did not find how to read it anyway [1].
Am I not understanding something basic about how DSO work ?
Thanks for your help !
[1]: by searching for .DAV format I arrived here:
https://siglentna.com/operating-tip/oscilloscope-binary-data-format/ and then here
https://siglentna.com/wp-content/uploads/dlm_uploads/2021/09/How-to-Extract-Data-from-the-Binary-File.pdf but the format does not match my dumps.