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V2Plus4 Problems - any advice please ?
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Good day
Seeing I don’t get any response on the official forum, perhaps some here can assist? I have not used my original V2Plus4 device for a while and updated to the latest firmware. It now does not calibrate correctly, does not remember the calibration, and above about 140MHz it displays only noise - even after calibration and with both ports terminated with 50Ohm Please see the attached file for photos of the screens. Any ideas please - it is the V2Plus4 version before the display change. 
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On 27/01/2023 14:48, RandMental wrote:
Good dayI replied to you on the official forum both by e-mail, and on the Web page, but I've seen neither. I'll try direct as well this time. I suggested: "Try charging it." Cheers, David -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email: david-taylor@... Twitter: @gm8arv |
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On 27/01/2023 15:36, David J Taylor via groups.io wrote:
I replied to you on the official forum both by e-mail, and on the Web page, butSorry, that was reply to someone whose calibration didn't stick. David -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email: david-taylor@... Twitter: @gm8arv |
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I would suggest re- flashing with a previous version. It sounds like you may have flashed it with a version for another device model.
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On Friday, January 27, 2023, 09:48, RandMental <randmental@...> wrote:
Good day Seeing I don’t get any response on the official forum, perhaps some here can assist? I have not used my original V2Plus4 device for a while and updated to the latest firmware. It now does not calibrate correctly, does not remember the calibration, and above about 140MHz it displays only noise - even after calibration and with both ports terminated with 50Ohm Please see the attached file for photos of the screens. Any ideas please - it is the V2Plus4 version before the display change. |
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Hi David - as per report back on the official channel
Thanks for the suggestion. |
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Morning Dave
Thanks for the reply - that is what I throught as well, using a wrong version. Tried various flashing methods - VNA-QT & NanoVNA-App, and even moved back to the orrignal 2020 firmware - all do more or less the same. even tried DisLord's firmware going back a few versions. The electronics are most screened off - so I cannot really meaure anything regards |
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