Re: PC SW for tinySA
Thanks Kurt. I didn't consider that.? I'm used to seeing dBc units for measurements relative to the carrier level.
Herb
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hwalker
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#58
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Re: PC SW for tinySA
Hi Herb
It is relative to the carrier level ?
Kind regards
Kurt
Fra: [email protected] <[email protected]> P? vegne af hwalker
Sendt: 3. maj 2020 15:36
Til: [email protected]
Emne: Re:
By
Kurt Poulsen
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#57
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Re: PC SW for tinySA
Its good to know the tinySA will already have usable software when it is offered for sale.? Linux and Mac users will especially be happy to know that a cross-platform python derivative of Nano-Saver
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hwalker
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#56
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PC SW for tinySA
The wiki has one page on the PC SW for the tinySA
https://tinysa.org/wiki/pmwiki.php?n=Main.PCSW
More to come
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Erik Kaashoek
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#55
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Edited
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Re: Measurement examples posted on wiki
One more example added.
Measuring IIP3 of the tinySA
https://tinysa.org/wiki/pmwiki.php?n=Main.IIP3
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Erik Kaashoek
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#54
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Re: Measurement examples posted on wiki
The wiki is not hosted on groups.io but on a separate wiki server to ensure I do not run out of space.
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Erik Kaashoek
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#53
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Re: Measurement examples posted on wiki
Erik,
See attachment.? When I select the Pages-Home button I was expecting to be taken to the Wiki Page ( https://tinysa.org/wiki/ ) but on my computer that doesn't happen.
Herb
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hwalker
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#52
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Re: Measurement examples posted on wiki
Which link fails and where does it point to?
I failed to find the error.....
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Erik Kaashoek
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#51
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Re: Measurement examples posted on wiki
The left-hand Wiki menu doesn't seem to be linking correctly to " https://tinysa.org/wiki/ "
- Herb
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hwalker
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#50
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Re: Measurement examples posted on wiki
Wiki corrected for minimum input frequency
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Erik Kaashoek
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#49
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Re: Measurement examples posted on wiki
========================================================
Thanks for the clarification Erik,
The " 0 MHz to 350MHz" specification on the Wiki page threw me off.? I think the HP 8566 series spectrum
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hwalker
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#48
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Re: Measurement examples posted on wiki
To clarify more:
The zero hertz peak is not caused by DC but by leakage of the 1st LO through the 1st mixer so technically it is not a zero hertz peak but a first IF peak. but given that it is
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Erik Kaashoek
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#47
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Re: Measurement examples posted on wiki
The zero hertz peak is indeed ignored
The tinySA does not have DC coupling. Below 100kHz it starts to roll off and at 10kHz there is about 8dB attenuation which is not compensated. The input capacitor
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Erik Kaashoek
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#46
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Re: Measurement examples posted on wiki
Erik,
In some of the measurement examples you provided the frequency sweep starts at 0 Hz.? In peak search functions does the tinySA ignore the internal 0 Hz signal and start its search to the right
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hwalker
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#45
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Measurement examples posted on wiki
To help understanding the measurement capabilities of the tinySA I added some measurement examples on the wiki
https://tinysa.org/wiki/pmwiki.php?n=Main.Examples
One set of wide scans and one set of
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Erik Kaashoek
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#44
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Re: Request for testers for the tinySA
No problem. If any candidates drop out, I'm always willing to help.?I'm fed up taking the 8591C out in the car :-)Note also: Due to my long work schedule, I often don't check emails for 4 days in a
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g4jmm2006
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#43
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Re: Request for testers for the tinySA
For now there are sufficient candidate testers.
By
Erik Kaashoek
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#42
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Re: tinySA IIP3
Hi Erik
Agree, removing any additional contribution on the two sideband frequencies from the two signal generators by using power combiners with isolation and other means such as isolators, will
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Kurt Poulsen
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#41
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Re: tinySA IIP3
But the internal generated IIP3 can not be higher then what is measured so I assume this measurement set a lower limit for the IIP3 of the tinySA, it could even be better. Correct?
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Erik Kaashoek
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#40
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Re: tinySA IIP3
Hi Erik
I have a few comments/suggestions.
I do not know how you test setup was, but there is a need to ensure the IIP3 level is not influenced by cross modulation between the two signal generators.
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Kurt Poulsen
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#39
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