# Omniscan 3D + NMEA Heading/Position
Go to 'Session Configurations' in SonarView:
Click 'Add Device' and add your Omniscan 3D to the devices list with the correct Protocol and IP address:
{% 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:
Finally, add them both to a session. Your Session Configurations page should look something like this:
Once both the GPS and the Omniscan 3D are connected, your session will appear in Discovery, allowing you to connect.
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.ceruleansonar.com/c/sonarview/session-configurations/omniscan-3d-+-nmea-heading-position.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.