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Another random batch of values I used was able to get the SM200C to error out with smUncalData.
I am in FREQSWEEP mode with:
* Auto speed
* 900kHz – 6GHz start/stop
* 30kHz RBW
* 100ms period
* Nuttall windowMy app seems to be setting up the device with these settings fine, but when I try to get an FFT sweep, this is the value I get in return after the very first smFinishSweep call. Any ideas? It seems like I can “ignore” it, but should I be worried?
Also, I am still a little confused on the sweepTime option for the smSetSweepCoupling API call. I am setting the start/stop and RBW, is it safe to just pick a super small sweepTime since the system will just pick the fastest time it can based on the RBW/VBW?
The API picks the maximum sweep time that ensures all configuration is met. That includes RBW/VBW/sweeptime. Setting a small sweep time ensures the minimum sweep time is chosen based on RBW/VBW.
I would ignore the uncal warning flag for now if it’s being thrown on the first sweep. I suspect it’s being set erroneously. I was able to reproduce this using your settings. The uncal data flag usually indicates network data loss, I’m going to need to investigate further to determine why it’s returning this warning for this configuration.
Andrew
I have been unsuccessful reproducing the issue with the API. Can you potentially put together a short script that reproduces the problem on your end?
I’m also now considering that you are in fact seeing networked data loss, and that could be tied to your specific hardware configuration and/or software.
While I do see the issue in Spike, I only see it ~1 out of 20 or so reconfigures, and the sweep is not corrupted, which led me to believe it was an erroneous warning.
You also have my email if you wish to communicate via email. It is easier to share pictures and code via email moving forward.
Andrew
That’s correct, the FW updater can only be run on Windows. You will need to install the Spike software on the Windows machine to ensure the USB driver is installed. The SM200C must be connected to the PC via USB for the FW update.
Andrew
Thanks for the update.
I’m glad this resolved the issue.
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