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Some required setting for NanoVNA-saver using female calibrations

Kurt Poulsen All Messages By This Member #7211 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 image002.png Male and female calibration NanoVNA-H.pdf Male and female calibration NanoVNA-H.pdf
Rune Broberg All Messages By This Member #7217 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 toggle quoted message Show quoted text On Tue, 19 Nov 2019, 16:02 Kurt Poulsen, <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 All Messages By This Member #7244 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 toggle quoted message Show quoted text 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
Rune Broberg All Messages By This Member #7249 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 toggle quoted message Show quoted text 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
Maurizio IZ1MDJ All Messages By This Member #7250 Hi Rune , in my opinion ,the right place of the port extension control , is on the calibration menu. Best regards Maurizio IZ1MDJ
Erik Kaashoek All Messages By This Member #7252 Not sure. I often use port extensions when measuring a DUT with a different cable. Being able to quickly rotate the cable away during regular measurement is a very nice feature. Also it would help if nanoVNA-saver can calculate the extension to do the rotation (simplest way is to rotate S11 of the highest frequency response in the scan back to zero degrees phase shift) -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik, PD0EK
Kurt Poulsen All Messages By This Member #7253 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 toggle quoted message Show quoted text 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 All Messages By This Member #7254 Hi Rune I do not know if you noticed my information on how to measure high Z component where the port extension is an important addition. Likewise a new screen display/window showing Rp and Xp would be wonderful as these data we can only read for the marker data. The remove the problem where the R value is highly frequency dependent when and imaginary component is in play e.g. when measuring a component at the end of an adaptor. 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 toggle quoted message Show quoted text 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
[email protected] All Messages By This Member #7281 Port extension very useful. Many cheap sma bnc adapter lossy. Port extension with loss compensation extreme useful.
John Gord All Messages By This Member #7282 Rune, For what it's worth, HP put "port extension" in the calibrate menus, but put "electrical delay" in the display scaling menu. I don't remember the details, but I think "port extension" actually added a delay twice the ext/c value to account for the round trip in S11. --John Gord

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