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Re: Selftest fail
#bug_report
On Thu, Mar 27, 2025 at 09:40 AM, Hartmut wrote:
Sometimes there are 4 or 5 good runs , but the next fails. Sometimes there a 3 or 4 bad runs that fail in sequence.? Erik,
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Maybe you want to lower the tolerance for this self test item.
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Roger |
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Re: Selftest fail
#bug_report
开云体育Hugen, your comment is interesting for me, because the test fail #8 did not occur in every test run. Sometimes there are 4 or 5 good runs , but the next fails. Sometimes there a 3 or 4 bad runs that fail in sequence.? Therefore I ran several level calibrations, but they did not fix it.? I will return it to vendor! Hartmut? Von meinem iPhone gesendet Am 27.03.2025 um 15:48 schrieb Hugen via groups.io <hugen@...>: ? Sorry, it really isn't a clone. This is due to a deviation in the IF filter, and although we have rechecked it several times during the production process, there are still some with smaller deviations that passed the test during production, but could not pass the test in subsequent tests. You can try contacting your supplier for a replacement.
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Re: Selftest fail
#bug_report
You did not buy from an authorized vendor so you might have received a clone. |
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Selftest fail
#bug_report
My TinySa Ultra+, just bought on Amazon from
Pinsaitec, fails on selftest #8. I have implemented newest firmware, have done several calibration runs! No efford! What can I do, before returning the device to vendor?? Best regards, Hartmut |
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Re: Spur at 4.275 GHz on ZS-407
I have a similar prob?although not quite as bad, the rear of my 407 is the same as Andrew's except the serial # as expected. Mine also appears to be a little later as the serial # is greater. I've duplicated?the first 4 images for comparison. Dave On Wed, 26 Mar 2025 at 02:36, Erik Kaashoek via <erik=[email protected]> wrote:
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Re: Spur at 4.275 GHz on ZS-407
Erik, I too have the 4.766GHz spur as described by Andrew. as purchased from R&L a couple months ago. The attached plot #1? is with a terminated input, Spur Removal? ON. No change with the external antenna. I don't see any other spurs. Plot #2 is the same with the Spur Removal OFF.
----------------------------------------- From: "Erik Kaashoek"To: [email protected] Cc: Sent: Tuesday March 25 2025 6:54:59AM Subject: Re: [tinysa] Spur at 4.275 GHz on ZS-407 Can you check if you see similar spurs at 1069 MHz, 2138 MHz
and 4276 MHz?
I assumed these where solved but if you still see them I have
to do some more work.
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Designer of the tinySA
For more info go to |
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Re: Spur at 4.275 GHz on ZS-407
Do the spurs increase in level when you attach the telescopic antenna? No, it remains the same. And it is present even when the RF input is short-circuited with the VNA calibration "S" cap.
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Not exactly at those frequencies (or that is just a measurement error), but some of them are there with Spur Removal turned off. When I set it to On or Auto, they are gone, except for the one at 4.276 GHz.?
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Roger Need
Hartmut
