[hpsdr] 14bit Hermes Schematic?

[Helmut]

Ok Martin,



at the next opportunity I‘ll make the test and let you know what the result is.

I lost fun with Thetis since I experienced some ‘instabilities’ with the Hermes

boards, while PowerSDR works fine me. It was also time-consuming for me

that Thetis beta versions struck after some of these automatic  win10 updates. Currently I’m playing more with my LimeSDR via the satellite QO-100, hi.



Happy testing.



73, DC6NY



Von: Martin Emmerson [mailto:martinhemmerson at gmail.com]
Gesendet: Mittwoch, 6. November 2019 13:19
An: Helmut
Cc: Sebastien F4GRX; hpsdr at lists.openhpsdr.org
Betreff: Re: [hpsdr] 14bit Hermes Schematic?



Thanks Helmut,

   For the information!

Yes, I tried V10.3 on my 16bit Hermes and although it worked I still had the same

problem with PS not always working!

The way I test is, without any PA running, I select "PA-A" then from the "Linearity" menu

I just press "Two-tone" and when PS is working I get a "Correcting" in yellow and a

"Feedback" in red appear to the right under the spectrum display.

I just did this test ten times and five time it worked and five it did not (the yellow correcting

goes out and the red Feedback does not appear)...

I am using the latest Thetis v2.6.8 but I have had the same problem on all previous versions...

This problem is the same on three different (all home built) boards



If you ever try this test on your 14bit Hermes I would be interested in the result?

It is a bit like tossing a coin, you can get a run or tries when it always works but

over a number of tries it always seems to average out to roughly %50 - strange.

I am now messing about with the Verilog firmware code - certainly learning something

but not fixed the problem yet..........



73's



Martin G3OQD.







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