# 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**.

### micro 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

{% hint style="success" %}
Please note that the MCX (WiFi) and SMB (GPS) type connectors on the front panel have a limited number of **mating cycles**. Therefore we recommend leaving the provided MCX to RP-SMA WiFi pigtail and SMB to SMA GPS cable connected to the AIR NavBox whenever possible. **Frequent connects and disconnects should be performed on the SMA side of the pigtail cable only.**
{% endhint %}

### LiDAR / Camera Cable

* [ ] LiDAR / Camera cable is securely connected to the NavBox I/O connector (thumbscrews on the cable are properly tightened).

{% 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 via the safety thumbscrew
* [ ] Always first connect the Power Splitter Cable to the NavBox first, before connecting the battery/power supply. This will prevent sparking on the MR30 input connector of the NavBox.

### General

* [ ] Fan ventilation openings on the NavBox are not covered by objects or tape
* [ ] Nothing is connected to the micro USB debugging port on the side of the NavBox
* [ ] Nothing is connected to the micro HDMI debugging port on the side of the NavBox

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/air-navbox/recording-data).