开云体育

Tom What type of sources have used in combination with the tinySA? An sources that generate possibly more than +10dB? -- ------------------------------------------ For more info on the tinySA go to

Tom, This is a very clear failure of the 4dB step of the built in attenuator. Agree you should ask for an exchange. Refer to this measurement as

Erik: So I upgraded to 1.1-77. Had to manually install drivers from win64 drivers folder.? Ran 30db test twice and it failed badly 4 to 5 db variation. I did a recalibrate after firmware update and

Good point. Never thought about this. Makes totally good sense.

Thanks Mike. I had the same problem yesterday.

First run unit does nicely in this test 73 -Jim NU0C "Erik Kaashoek" <erik@...> wrote:

Herb. I was not sure 0.5dB steps where needed and it is working by accident in the tinySA -- ------------------------------------------ For more info on the tinySA go to https://tinysa.org/wiki/

This picture is very good evidence of a failing attenuator. Suggest you take this up with your supplier. -- ------------------------------------------ For more info on the tinySA go to

For interest sake, I ran the new test...

Yes, that is good -- ------------------------------------------ For more info on the tinySA go to https://tinysa.org/wiki/

Eric: The test on my unit seems to start at 29dB of attenuation. charlie

Added some pictures to the wiki page as measurement examples https://tinysa.org/wiki/pmwiki.php?n=Main.CheckTheAttenuator -- ------------------------------------------ For more info on the tinySA go

New FW released Version v1.1-77 Changes: - MEASURE/MORE/LINEAR added The linearity test requires an input signal between -40dB and -25dB and a single marker positioned on that signal. Activating the

It would help us if you could install the a new FW. V1.1-77 and run an additional test Connect high and low with SMA cable Set CAL OUTPUT to 30MHz Start MEASURE/MORE/LINEAR A green line should

Received Tiny SA from R&L last week. After calibration only attenuator test 11 failed. Did manual 30mhz attenuator test as suggested. Came with v 1.1-52 Dec 14 2020. Not updated 1 db step failed at 4

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