The Ojisan firmware for the V2 allows re-normalization of the Smith chart, Return Loss, and VSWR to arbitrary real reference impedances. The calibration is still done with a 50 ohm load, but the displayed information is adjusted to show the selected reference Z0 at the center of the Smith chart and the other measurements follow along.
This is accessed in the ojisan menus as: DISPLAY / SIMULATE / PORT-Z
(Version Ojisankoubou20201004, from October 4, 2020. Note that this is not for the V2 Plus or Plus4, but there is a version for the SAA2-N variant. The relevant page for both the V2 and SAA2-N stuff on the ojisan site is: )
--John Gord
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On Fri, Jul 2, 2021 at 10:12 AM, Roger Need wrote:
On Fri, Jul 2, 2021 at 09:40 AM, Dr. David Kirkby, Kirkby Microwave Ltd
wrote:
I don't know if there are any settings on the nanovna which
will allow you to easily change the reference impedance,
The current NanoVNA-F, NanoVNA-H and NanoVNA-H4 firmware do not have this
feature in the menu. I don't own any V2 products so I can't comment on them.
Roger
