> For the complete documentation index, see [llms.txt](https://manuals.syride.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manuals.syride.com/nav-v3-english-manual/vii.-configure-your-device.md).
# VII. Configure your device
1. Push the central button to start your instrument.
2. Go to screen #9 with left and right buttons, and confirm by clicking on central button. The number of the screen is displayed on the top right of it.
3. The first screen shows some informations about your instrument. A long push **on the central button will trigger a manual recording of a new flight trace**.
4. Next screen allows you to set the sound volume.
5. The 2 next screens allows you to set rising and falling threshold of the vario.
6. The next screen enables to activate the “thermal sniffer” function. The instrument will produce a specific bip when you fly in an area which do not go up (<0.1m/s) or down (>0.2m/s). This indicates that you fly either in a zone near a thermal or at the beginning of the thermal cycle.
7. You can turn ON or OFF the backlight of your instrument on the next screen. **Warning: backlight reduces the instrument’s autonomy (-30%)**.
8. The next screen enables to turn ON or OFF the alarm when you enter in a controlled airspace.
9. The altitude screen enables to select either the altitude given by the GPS (by default) or a pressure altitude that will be manually settled.
10. Last screen is to go back to main screen (#1)