All Vela-Navega multiplexers include a Debug Mode that can be used to verify whether data is arriving correctly at their inputs. On the Nmea2Wifi, Nmea3Wifi, Nmea4Wifi and N2K0183, Debug Mode monitors incoming data for 20 seconds and displays it in the browser. Depending on the model, this can include data received through the serial and WiFi inputs, the SeaTalk1 input, or the N2K bus. No data is transmitted while these multiplexers are operating in Debug Mode. The following video shows the Debug window of an Nmea3Wifi receiving NMEA 0183 data through input port P1.

These facilities allow the Nmea3Wifi and N2K0183 to be used as analysis tools for the SeaTalk1 and N2K buses, respectively. The Nme3Pro can analyse both buses, as well as the conversions and routing between them. You can find more information here for the case o the NMEA3WIFi and here for the case of the N2K0183. For detailed information about the Nme3Pro Debug function, please consult the Nme3Pro User Manual.