I'm trying to configure nRFgo studio, but after connecting the device to my PC via RS 232, nRFgo studio can't recognize the com port.
Where can I find a user manual which will explain how to configure and use this tool?
nRFGo Studio is a deprecated product and you should use nRF Connect on PC instead. In the nRF Connect on PC you can find the Direct Test Mode application to perform RF test.
NRFGo Studio doesn't recognize COM port automatically in DTM mode, you need to select manually.