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Noise floor seems to be to high

Hello, we just recently purchased the Spectran V6 and are still learning to use it.

Using the wrapped spectrum, when we attempt to look at the noise floor we can't seem to get it much lower than -110 dBm. We are hoping to get closer to -174 dBm. Could this be a settings issue?

Please send a screenshot to check your settings.

Hi, thanks for getting back to me. Here is a screenshot showing the wrapped spectrum and it's settings, let me know if there are other settings menus you need screenshots of. Thanks

Uploaded files:
  • scrnsht.png

Your Reference Level is at 0dBm so you are missing 60dB of sensitivity. Aktivate the preamplifer(s) and lower the noise floor accordingly.

BTW: You are using a very old software. Please update to the latest version.

Ok, thanks, that helped. That got the noise floor down to about -125 dBm. What would you reccommend as the best way to update the software? Thanks.

Uploaded files:
  • scrnsht2.png

You can download the latest version at https://aaronia.com/downloads/

I set up a mission as shown in the attached figure, and send a microwave signal with 2.5 GHz, -85 dBm to the spectrum analyzer. The noise floor is around -152 dBm as shown in the attached figure. How can I achieve the -170 dBm noise floor?

Uploaded files:
  • mission.png
  • signal.png

You need to use a higher FFT (key) e.g. the 128k or 1Million FFT to reach 1 Hz RBW:

https://aaronia.com/en/software-feature-128k-fft

https://aaronia.com/en/software-feature-1m-fft