> 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/sonarview/session-configurations/omniscan-3d-+-nmea-heading-position.md).

# Omniscan 3D + NMEA Heading/Position

Go to 'Session Configurations' in SonarView:<br>

<figure><img src="/files/rP9CLlZQOPAt9AorY78Y" alt=""><figcaption></figcaption></figure>

Click 'Add Device' and add your Omniscan 3D to the devices list with the correct Protocol and IP address:

<figure><img src="/files/t06AzgxegmQ7OzoQaQ2c" alt="" width="313"><figcaption></figcaption></figure>

{% hint style="info" %}
The Omniscan 3D has an internal IMU, so Mounting Angle just affects how the boat looks in SonarView
{% endhint %}

* Mounting Angle: Angle that the Omniscan 3D is mounted relative to the attitude source
* Mounting Offset: Position offset relative to the position source

Next, add your NMEA source as a Generic GPS Device with the URL:<br>

<figure><img src="/files/rMeUOmbqSLLnbNZW9syx" alt="" width="316"><figcaption></figcaption></figure>

Finally, add them both to a session. Your Session Configurations page should look something like this:<br>

<figure><img src="/files/QkgK7RDshe7N88mBAuP6" alt=""><figcaption></figcaption></figure>

Once both the GPS and the Omniscan 3D are connected, your session will appear in Discovery, allowing you to connect.