ESC with arduino


I am controlling an ESC using arduino with Servo library but something is not working well. I think is related to the frequency in which Servo library sends signal. In my ESC datasheet is written this:

Control Frequency: 2 options: 8KHz and 22KHz. The default is 8KHz. This option is the drive frequency of the motor.

What does mean 8khz? Is something I can program in the servo library?

This is a settable property of the ESC, you need a programmer for it to change this, nothing to do with the Servo library.