Hi Rune
I will modify my calibration document and maintain the 50fF (it might be forgotten to delete/change) and adjyst the dealy accordingly. I think this is the safe way. I will also add NanoVNA-saver screen dumps about calibration settings
I will update the information I issued earlier
Kind regards
Kurt
-----Oprindelig meddelelse-----
Fra:
[email protected] <
[email protected]> P? vegne af Rune Broberg
Sendt: 20. november 2019 08:57
Til:
[email protected]Emne: Re: [nanovna-users] Some required setting for NanoVNA-saver using female calibrations
Hello Kurt,
a value of 1 should work. But I haven't had time to test it thoroughly :-)
I will look into making a value of 0 work as well, or give an error if it is not possible.
"Port extension" delay setting is in the works, but I'm looking at where to put the control in the interface.
--
Rune / 5Q5R
On Wed, 20 Nov 2019 at 02:45, Kurt Poulsen <kurt@...> wrote:
Hi Run
Aha, thank you for the info. That is a nasty one ?
Then a value of 1 might me OK ?
Kind regards
Kurt
-----Oprindelig meddelelse-----
Fra: [email protected] <[email protected]> P? vegne af
Rune Broberg
Sendt: 19. november 2019 17:40
Til: [email protected]
Emne: Re: [nanovna-users] Some required setting for NanoVNA-saver
using female calibrations
Hi Kurt,
Sorry for taking long to reply to your email.
The issue in your earlier tests seem to be with C0=0: the calibration
corrections divide by a value that is dependant on C0, and for that
reason,
C0=0 is not a valid standard - and the custom settings for the "open"
is disabled, including delay.
--
Rune / 5Q5R
On Tue, 19 Nov 2019, 16:02 Kurt Poulsen, < <mailto:kurt@...>
kurt@...> wrote:
Hi All
In the NanoVNA-saver the calibration settings, when doing a female
calibration with the supplied NanoVNA calibration kit, where the
male
SOL parts are fitted to the FF adaptor, need some special settings
until Rune gets fixing the following:
The Open delay does not work and substituted by a C0 setting as
shown
in attached image of 1022.3 fF Do not use the open calibration
standard just leave the FF adaptor open As Shunt C for the load not
yet implemented an inductance og 205pH introduced as temporary fix
The
data are for the NanoVNA-H delivered after end October. The earlier
delivered kits are for Short and Load identical but the delay of FF
adaptor is a bit longer and 70.3ps Remember the NanVNA internal C0
calibration must be done prior to using the NanoVNA-saver with the
same setup as when calibration with the NanoVNA-saver
Kind regards
Kurt
Kurt Poulsen