On Wed, Jan 1, 2025 at 01:13 PM, Leif M wrote:
When I was (playing) testing with my Nose source noise source and TinySA, everything was fine at lower frequencies, but when the max frequency was 5GHz, there was a 10-20dB step at 3GHz. I don't think noise source does that,? but I wouldn't think TinySA would do that either.
? ?I hope you read the page on limitations of enabling the Ultra mode and measuring wideband or scanning signals.? The step at 3GHz is normal for the noise source you are using.
? ?With a noise source, the Ultra mode mirror and spur elimination algorithms are weak as the method used to select the correct frequency, instead of a mirror, starts to break down.
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? ? The new Ultra+ ZS-407 may handle the 3GHz step better.? Hopefully someone who has the ZS-407 can provide test data.
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Herb
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