> 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/dvl-75/usage-considerations-and-scenarios/additional-connection-possibilities.md).

# Additional Connection Possibilities

There are many possibilities for interconnecting the DVL and using it to control the ROV and/or monitor the DVL passively without interfering with ROV control. Three are shown below.

![Using Both Interfaces. Serial and Ethernet interfaces can be used simultaneously for listening. We do not recommend sending commands on both interfaces. Pick one or the other.](https://400583030-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FIUx8F0dEX9C01W3iSbva%2Fuploads%2FP1x4IIo6vpto5JimBqhQ%2Fimage.png?alt=media\&token=683cdeeb-7341-435a-b35a-e24f613cb92f)

![Using a Port Replicator to monitor the DVL while also using it in ROV control.](https://400583030-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FIUx8F0dEX9C01W3iSbva%2Fuploads%2FBCy5PQpl80TjPUXtFmFu%2Fimage.png?alt=media\&token=1c24999a-c34c-4fc7-a51f-287153b99f99)

![In Body Frame mode, connections are simple and an optional on-ROV GPS would provide no benefit.](https://400583030-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FIUx8F0dEX9C01W3iSbva%2Fuploads%2FcDH7Yd3TiYynVAEZfIuF%2Fimage.png?alt=media\&token=3afa0897-2c4c-4cd5-8b4f-9483e43f5e14)