Y pellter lleiaf sydd angen i bwyntydd y llygoden symud ar y sgrîn cyn i' r cyflymiad gael effaith yw' r drothwy. Os yw' r symudiad yn llai na' r drothwy, symuda pwyntydd y llygoden fel petai' r cyflymiad yn 1X. Felly, pan wnewch symudiadau bach â' r ddyfais gorfforol, nid oes cyflymiad o gwbl, sy' n rhoi mwy o reolaeth i chi dros bwyntydd y llygoden. Âsymudiadau mwy o' r ddyfais gorfforol, gallwch symud pwyntydd y llygoden yn gyflym i ardaloedd gwahanol ar y sgrîn.
The threshold is the smallest distance that the mouse pointer must move on the screen before acceleration has any effect. If the movement is smaller than the threshold, the mouse pointer moves as if the acceleration was set to 1X; thus, when you make small movements with the physical device, there is no acceleration at all, giving you a greater degree of control over the mouse pointer. With larger movements of the physical device, you can move the mouse pointer rapidly to different areas on the screen.