# Preparing the System

Follow this checklist to make the system ready for a successful mapping mission.

For all steps below, make sure the system is **NOT connected to a power supply**.

## SD Card

* [ ] Card is correctly formatted in the exFAT file system
* [ ] Card has a UHS speed rating
* [ ] Card has enough free memory available for the mapping mission
* [ ] Card is inserted into the SD card slot of the NavBox

## GPS and WiFi Cables

* [ ] GPS antenna is connected to GPS1 port (for single antenna setups)
* [ ] GPS antennas are connected to both GPS1 and GPS2 (for dual antenna setups)
* [ ] WiFi antenna (if required) is connected to the WiFi port

## LiDAR, IMU, and Camera Cables

* [ ] If using secondary LiDAR, Camera, or IMU, ensure they are securely connected to the NavBox connector.

{% hint style="danger" %}
Never connect or disconnect the I/O cable or any attached sensors/cameras from the I/O connector while the unit is supplied with power. This can lead to substantial damages to both NavBox and attached sensors/cameras. Always shut down the unit completely and unplug the power supply before disconnecting the I/O connector.
{% endhint %}

## Power Cable

* [ ] Power Splitter Cable is secured to the NavBox front panel.

{% hint style="danger" %}
Always first connect the Power Splitter Cable to the NavBox first, before connecting the battery/power supply. This will prevent sparking on the LEMO input connector of the NavBox.
{% endhint %}

## General

* [ ] Fan ventilation openings on the NavBox are not covered by objects or tape.

Once all the points mentioned above have been verified, it is safe to proceed to the next section [Recording Data](https://docs.phoenixlidar.com/hardware-and-interfaces/navbox/flexpack/recording-data).