# Device Controls

<figure><img src="/files/IHqFTVJhA9lMPnntnFyR" alt=""><figcaption></figcaption></figure>

{% hint style="danger" %}
Warning: If you are using the Omnitrack, do NOT have "Send Mavlink Position Updates via SonarView" turned on. The Omnitrack is designed to interface with the ROV directly, so you don't want to be sending the position updates again via SonarView
{% endhint %}

* *Start/Stop* button starts and stops pinging. The button label toggles to indicate the current state.
* *Not Recording* toggles log recording
* *Topside Location Source* sets the source of the topside location. If you have a GPS in your session or you're using an Omnitrack and want that position to be used, select "Automatic". If you don't have a GPS or it's behaving poorly and you want to set the topside location manually, select "Manual"
* The Topsdie coordinate input box only shows up in Manual mode. This allows you to set the location of the topside
* *Send Mavlink Postion Updates via SonarView* checkbox only shows up when you have a mavlink vehicle configured in your session. When turned on, SonarView will send the global position of the deepside to the mavlink2rest server via the GPS\_INPUT mavlink message. This will only happen when the topside also has a global position
* *Calibrate* will bring up the gyroscope, accelerometer, and magnetometer calibrator dialog for the rovl topside.&#x20;
* *ROVL Configurator* bring you to the configuration and status page hosted by the ROVL itself (non-serial ROVL only). Please review this page for various settings
* *Check Ardupilot Parameters* is shown if your current session has a mavlink2rest vehicle. This button checks that the parameters are set as recommended and gives a dialog to set them if not
* *Sim Data* makes the ROVL send simulated data as if the target was at a slant range of 100 m and a relative bearing of 0 degrees and a relative elevation of -20 degrees.
* *Stop Sim* turns off the simulated data


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