Some users have installed bluetooth adapters, which can give the same
isolation result.
These use the serial port available inside the nanovna.
You could also use a pair of opto-isolators on the internal serial port
lines, and connect a serial control port through them to give electrical
isolation. The cable wires would still be there, which may still have some
minor effect, even though they are electrically isolated.
Unfortunately you can't do an optical approach with the USB port, since it
requires electrical connectivity for power, etc.
Adding a true optical control port that uses optical cable is possible, but
would likely be more than the cost of the nanovna.
On Thu, Aug 31, 2023 at 4:24?AM Greg Strickland <greg@...>
wrote:
**Feature creep alert**
Could sensitive measurements be easier if Nano VNA had an optical
transmitter and companion receiver, or an internal memory to record "screen
shot" or measurements on a timer?
