Jim Lux 2022/11/28 06:32
On 11/27/22 11:47 AM, Leif M wrote:
> I got the SW working on my W10 PC. I had to delete all Cypress drivers.
> Is it possible to get a screen capture from NanoVna? Probably not,
> because it only shows USB MODE text.
> Do I really have to calibrate everything again. No calibration from NanoVNA?
You can either calibrate the NanoVNA or calibrate in NanoVNASaver or
both. NanoVNA-Saver allows you to have multiple sweeps concatenated so
you have smaller frequency steps for the same range.
The important thing is that the VNA is in the same calibration state
when you run N-saver as when you did the N-saver calibration. That is,
if uncalibrated, do a reset on the VNA to remove the cal; if it was
calibrated from 0-300MHz when you ran the N-saver cal, then the VNA
needs to use that cal when you make measurements,
>
> I want to get delay working. I have connected a small length of coaxial
> to a calibrated port, and want to put some suitable delay to compensate
> that coax. It works upto 300MHz, but higher than that, and errors grow.
> Saver wants picoseconds only, it gets now 8190ps. I can't get a screen
> capture now. The final coal is to measure small coils in PCB.
Why not do your cal with the standards at the end of the coax?
8000 ps is 8 ns, which is a couple meters of coax.
>
