If you need to configure your NDC-4 using Control Centre, or if you wish to share your combined NMEA 0183 data with third party software, you will need to connect the NDC-4 to a PC or laptop.

The instructions for doing this can be found here: https://www.actisense.com/knowledge-base/nmea-0183/ndc-4/how-to-connect-the-ndc-4-to-a-pc-or-laptop/