This form appears when you press
CHANGE in the parent Transmission of
Nmea 0183 Sentences form. The list box on the left will show
the present available COM ports. If you are not sure which one
refers to the multiplexer just unplug the USB cable from the PC
and press REFRESH. The COM port that disappears from the list is
the one that refers to the multiplexer. Plug it again.
The baud rate that you should set in this form is the baud rate of
P5. Remember that data that is output on the RS-422 P5 serial port
(connector A5-B5-GND on the PCB) is simultaneously output on the
USB connector of the module. Be careful when plugging and
unplugging the USB cable from the module as to avoid damaging the
connector.