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The integration technology used is called Garmin OneHelm.
OneHelm is currently available for the GPSMAP® 8400/8600 MFD series.
Also, Active Captain is supported. This screenshot shows ActiveCaptain, with the Victron App:
The Garmin needs to be connected to the GX device using Ethernet. Its not possible to connect over WiFi. For the ethernet connection, a Garmin adapter is required:
No special networking settings are necessary. Not on the Garmin; and not on the Victron GX Device.
The Garmin MFDs run a DHCP server; and the GX device are by default configured to use DHCP. After plugging in the cable, the Victron icon will show up after 10 to 30 seconds.
It is possible to connect the Garmin MFD to the Ethernet port of the GX device, and connect to the internet and VRM on the GX device by using one of the other non-ethernet port internet connectivity options (eg Wifi interface, or GX GSM).
TBD add screenshots and so forth.