Re: USB connection failed

David J Taylor

Hi David,

Thank you for your answer.

In between, i found the "problem".

The USB port was connected to a battery powered PC.

The NanoVNA's CH0 port was connected to a grounded frequency meter,
powered by the main.

After a main power fail, a fatal overvoltage arrived and the NanoVNA's
USB interface was killed.

Results, no more USB connection; no red line active and no battery
charging possible.

May be, a better USB protection would be required...but for the price...



PS I ordered a NanoVNA-H4 and i will take it totally disconnected when
not in use...

Sorry to hear that. Still a pain, Rudi, but better to destroy a $80 (or whatever) device than a $8000 one!

SatSignal Software - Quality software for you
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