Final answer:
VEXnet joysticks require calibration when first used and after firmware updates to maintain performance and ensure responsive control.
Step-by-step explanation:
The VEXnet joystick should be calibrated the first time you use it and after any firmware updates are applied to ensure accurate and responsive control during operation. Regular calibration helps in maintaining the performance of the joystick and prevents potential issues during use. While there's no need to calibrate the joystick every single time you turn the power on or before turning the power off, it's always important to follow the manufacturer's instructions for optimal performance.
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