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Another issue I noted is in the interface of the Ultra with the latest TinySA -App, 1.1.20.1.I have updated the FW with the app with no issues whatever. However, if I use the instrument set up (four arrows on the left), the program loads the Tiny SA set up. If I import a frequency range from 0MHz (to whatever), the program will not display sweep. If I change the sweep range in the program, from .000001Hz (to whatever), the program sweeps normally. On the instrument, if I set a low frequency of .000001Hz (to whatever), the program imports this and sweeps normally.?Appears the program doesn't like the 0Hz (as the original setup on? the Ultra came from Zeenko).

I tried reloading the older FW in the instrument, no change, and tried an older version of the App, no change.

I tried my older Tiny SAs and found when I set the range to 0Hz (to whatever) the App uploaded the setup, but loaded the low frequency as .000001 Hz. The Ultra loads the low frequency as 0Hz. if set to that on the Ultra. Appears the low freq must be a frequency of at least 1Hz.?

Not a critical issue as long as the behavior is known.

By the way,as I work primarily in GHz range frequencies, using a 6GHz test generator, I find the instrument within 0.5dB of the generator output level and the frequency is very close as well. To get an accurate instrument at this price range that goes as high as 6GHz and that compares favorably with commercial instruments at 30X the cost, is a monumental achievement. Congrats to you and the team that developed this.?

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From: "Erik Kaashoek"
To: [email protected]
Cc:
Sent: Friday December 2 2022 6:11:03AM
Subject: Re: [tinysa] TinySA ULTRA calibration reset error

Will see if I can replicate this and find the cause.
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