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Well, just for fun I extended this page: https://tinysa.org/wiki/pmwiki.php?n=Main.IIP3 so you have a justification for THREE tinySA Two are used to create a two tone generator (with some limitations)

That explains why tinysa.org crashed this morning. Too much BW consumed

https://hackaday.com/2020/09/01/tinysa-is-a-49-spectrum-analyzer/

Another justification for two tinySA's ;) The example is timely for me as I recently ordered one of the cheap 20dB gain, 5-6000MHz Chinese amplifiers on eBay and that's one of the measurements I plan

A new example is added to the wiki: https://tinysa.org/wiki/pmwiki.php?n=Main.OnedBc This example uses - Level sweep of the low output mode - Measuring in zero span to record level change over time. -

New FW released Version V1.0-66 Changes: - Improved auto attenuate algorithm The new auto attenuate algorithm has more resolution (1dB i.s.o. 5dB) and updates only once per second to avoid quickly

Interesting question! The clock ingress happens after the attenuator so it stays the same level when the attenuation increases. But the calculation assumes all signals are reduced by the attenuation

Erik, I have a question regarding the MCU clock related signals.? Why does the level of the signals appear to change when switching from 0 to 10 dB attenuation? MCU clk signals, 0dB attenuation.?

The tinySA has some problems with measuring AM modulation so I added a measurement example: https://tinysa.org/wiki/pmwiki.php?n=Main.AMModulation

You guys have those nice HP or even better signal generators, I have none, so I must use some cheap tinySA for my experiments

In this measurement example: https://tinysa.org/wiki/pmwiki.php?n=Main.DynamicRange you can see the internally generated harmonics disappears into the noise floor if the fundamental at the mixer?

New FW released version v1.0-64 Change: - Removed the 2.4kHz auto RWB setting A youtube reviewer discovered the manual 3kHz RBW provided better narrow span results compared to the automatic 2.4kHz

I seem to recall thinking in one of the YouTube videos that what was being called internally generated tinySA spurs were actually harmonics of the HP signal generator.? The so called "tinySA

Holy moly, a three tinySA set-up. Who'd of thought :) - Herb

1. Ensure you maintain probe positioning between circuit changes for accurate comparison.? Also, if you are narrowed in on a specific problem frequency ensure you widen your scan after fixing that

New FW released version v1.0-63 Change: - The target maximum level for the auto attenuation is changed from -20dBm to -30dBm In one of the user videos I noticed that, when not very familiar with the

In one of the user youtube videos I noticed confusion on what to expect from spur removal so I extended the wiki with a page showing the impact and (im)possibilities of the various

The real reason why you would used the tinySA with a tracking generator is to measure frequency translation devices such as a mixer as this can not be done using a nanoVNA. I added an example to the

A fascinating comparison. However, ?there are apparent differences in the results, in that the sa/tracking generator does not show the endstop attenuation at -40db, despite the scale (presumably

Yes, One of the early testers used it to find leakage paths through an EMC shielding. I made a crude NF probe and used it to check for radiated EMC. Is the sensitivity is not enough in low mode you