The Deadband determines the amount of cap movement that is ignored.
E.g., if it is 10, all values <= 10 from the cap are ignored. That is, small movement is ignored.
This is useful in a few ways (all unusual).
- If the device is in a bumpy environment, such as a mobile platform, small movements caused by the platform, not input from the user, will be ignored.
- If there is a problem with the device drifting on its own, this can temporarily be used to stop that. But devices that exhibit this behavior should be returned under warranty.
- In some applications, it is useful to isolate axes from each other. E.g., if a Left Arrow is assigned to one axis and an Up Arrow is assigned to another axis, then it might be necessary to put a large Deadband on these axes to keep them from interfering with each other. It is difficult to isolate axes with your hand.