So yes, Bill, your nanovna supports 401 points per scan by default, but you
can set it back to 101 points if you ever want to do that, under the
stimulus menu. It also supports a micro-SD card, which you can use to save
and recall any number of named setups (calibration, etc.) - I find this
useful, so I can set up an calibrate for the different test cables/jigs and
frequency ranges I use, giving them descriptive filenames. Then I can
recall them whenever I change what I'm doing. It's likely your nano has
the SD card slot already installed inside, so you can open it and see if it
is there. If so, you can just 'permanently' insert a compatible micro-SD
card, and replace the top. Or you can do as I did and use a craft knife to
carefully carve in the edge of the case an external access slot for the
card. Make sure you test your SD card by storing/retrieving a file from it
after inserting it - not all cards work with the nanoVNA, and it's not easy
to identify which will and which won't without trying them. But the card
must be 32G or smaller (an old 2G card will store more than you will ever
need).
Good luck,
Stan
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On Thu, Feb 2, 2023 at 10:52 AM Bill Klymus W5PB <bktx75@...> wrote:
For your second question, regarding number of points:
Note that with recent firmware, many nanovna hardware models support 401
points. It sounds like that is what you have, since you are getting
2.5kHz
steps across a 1MHz range. The actual number of points used is settable
via the menus. Which version of firmware do you have? and which model of
nanovna? (can be seen on the startup screen, or on the config->version
menu
screen for more recent firmware).
Very detailed thank both of you for the help. I have a Nano VNA-H 4
version 1.0.64
