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While playing around with some code to also step through the 64 attenuator positions,? I noticed that 0.5 dB steps can be entered from the on-screen keypad but only only 1 dB steps can be programmed

I did some thinking here, plus some math and testing, then I found an excellent youtube from W0QE describing all that was asked here :) The only reason NOT to check his presentation would be the time

There is already such an attenuator linearity test in the code. But disabled at the moment. It steps through all 64 attenuator positions (0.5dB per step) and if all is well it should draw a perfect

Erik, To take the drudgery out of manually entering 31 attenuator values, would it be possible to either add a module to TinySA-App (Settings?) that performs an extended attenuator test, as outlined

Thanks. The attenuator seems bad. Suggest you contact your supplier for resolution while referring to this communication. ------------------------------------------ For more info on the tinySA go to

8DB. the other picture is 7DB

what attenuation is the picture with the marker at -29.5dBm? -- ------------------------------------------ For more info on the tinySA go to https://tinysa.org/wiki/

OK Erik. I think I did the test correctly.

Well, we have already established it is a fraudulent, and by the way illegal, fake. I’m still in the process of trying to get a refund from banggood. The customer service representative is asking

Thank you for the help.? I will follow up with Zeenko store.

Clear. You can contact Maggie from the Zeenko store on AliExpress and ask for a solution, refer to these messages as evidence. -- ------------------------------------------ For more info on the tinySA

I went through the 1dB steps between 0 and 30 and this seems like the biggest change:

Good suggestion -- ------------------------------------------ For more info on the tinySA go to https://tinysa.org/wiki/

If one or more of the self test of the tinySA fails AND you did NOT buy from one of the safe sellers (see wiki) you can do the following: If the Attenuator test (test 12 in the latest FW) fails

Hal, Can you do the same test as described in this post: /g/tinysa/message/2769 -- ------------------------------------------ For more info on the tinySA go to

This could also be caused by an attenuator problem but it is not a big problem, just on the edge -- ------------------------------------------ For more info on the tinySA go to

It seems your attenuator is bad. You can verify this by enabling the cal output at 30MHz (MODE/Cal Output/30MHz) and putting the tinySA in low input mode with center 30MHz and span 10MHz. Set

I seem to be getting intermittent Test 3 errors as well.

Hopefully this is helpful.

Can you post somewhat bigger pictures of both test 10 and 11 with their message? Not the final selftest status screen -- ------------------------------------------ For more info on the tinySA go to