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Re: NanoVNA firmvare, compiled by DiSlord #firmware

 

Hi DiSlord,

Loaded your latest version of00000000000000 firmware 0.8.4.4 into my NanoVNA H4 and calibrated in NanoVNA-Saver. Results are not as good as in previous firmware see the pictures attached, sorry.

Measuring my 49.85 Ohms standard as 54.xx Ohms , ? when I measure CH1, R? is not shown in R+jX and S21 is not 0. .

See also my pictures taken with the previous firmware I had sent.

Regards

Jos

Op 27-4-2020 om 19:58 schreef DiSlord:

In 0.8.4.4 i only change IF to 8kHz

Other changes only for H4 (H version can`t fast process DSP in 64bit integer, H4 have hardware support for it)

PS change 96kHz mode for AIC ADC i will revert (this mode have more noise), i found PLL set error in AIC init, and now i test fix

On Mon, Apr 27, 2020 at 10:44 AM, <reuterr@...> wrote:

PSS Glad to see correct work from 1kHz
Hello DiSlord,
Yes, you did up to version 0.8.4.3.
Unfortunately the version 0.8.4.4 for the -H (not -H4) version is missing.

I am very happy with your version, especially for audio measurement (from 1
KHz upwards).
Please have a look at the appended screen shot
WSPR_Cauerfilter_LP5_3KHz_nanoVNA.png
It shows an audio Low-Pass filter measurement with a cut off frequency of 3
KHz.

73, Rudi DL5FA

2020-04-27.png
2020-04-27 (1).png

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