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Spectrum analyser update rate at lower spans

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Spectrum analyser update rate at lower spans

Postby Guest » Wed Apr 19, 2006 9:29 am

On my 3224, why does the spectrum analyser update rate (sweep time) reduce dramatically at lower spans? When I look at the bottom few hundred hz of the spectrum, the update rate is of the order of a few seconds. Intuitively, I would expect the update rate to be faster for lower freqs and higher for higher freqs.



Postby Sarah » Tue May 02, 2006 1:02 pm


Thank you for your email.

These lower frequencies take longer to capture fully as they by definition have a longer wavelength. Therefore the scan time needs to be longer and thus the update takes a bit longer. This is normal when using the spectrum analyser.

Best Regards

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