> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/ceruleantracker/overview/operating-ceruleantracker/input-device-configuration-panels/topside-gps-tab.md).

# Topside GPS Tab

Checking the “Show GPRMC Window” box will open a window with a decoded display of the $GPRMC message coming from the Topside GPS.

![The Topside GPS configuration tab](/files/NKgOx7VlL5wuKmgdicqL)