Hello Dat,
As a troubleshooting step, close the software and cycle the spectrum analyzer power and try launching the software again. If you still see the same results then…
What is the readout of a marker if you place on the graticule? You can do this by clicking anywhere on the graticule and it should place a marker and give you an amplitude reading. What is the amplitude reading?
Have you switched PC’s recently? Or is this still the same PC?
Can I have you install the latest version of our software to determine if the issue persists on our newest software? You can find our latest application at http://www.shnavloginupdates250428.kinsta.cloud/Spike. We now have a spectrum analyzer application called Spike which interfaces all of our devices. You can install it from the link above. It can be installed side-by-side with your current application, no need to uninstall what you currently have running. I would be curious to know the results of running the Spike application, and if you experience the same error.
I apologize for the inconvenience. Hopefully we can determine the issue quickly.
Regards,
A.J.