NanoVNA – Live Plotter

1. On the NanoVNA, set your sweep start/stop and points (menu).
2. Put the NanoVNA in USB/CDC mode.
3. On this page, choose baud (default 38400), pick the channel (S11/S21), and enter the same Start/Stop (defaults 0.05–900 MHz) & Points.
4. Click Connect (select the port), then Start to stream.

This viewer only scales/plots — it does not change the device setup.