### Aero-X Industrial Drone Pre-Flight Calibration Guide
To calibrate the drone's compass and IMU sensors before flight, follow these instructions:
1. Location Prep: Move the drone to an open, outdoor area. *Do not perform this step near large metal structures or high-voltage power lines.*
2. Power Sequence: Turn on the remote controller first, then connect the main flight battery to the drone.
3. Initiate Calibration: Press and hold the *Calibration Button* (located on the underside of the fuselage) for 5 seconds until the status indicator flashes blue.
[!] WARNING: If the status indicator flashes red, immediately disconnect the battery and inspect the rotor blades.
Based on the guide above, what is the functional purpose of the italicized text in Step 1?
- To highlight a critical environmental constraint required to prevent interference during calibration.Cevap
- BTo imply that the drone calibration will automatically fail and lock the system if any metal is nearby.
- CTo summarize the primary objective and final outcome of the entire calibration process.
- DTo express the manufacturer's subjective preference regarding flight locations rather than a technical requirement.