A Wipe is a gradual transition where one video signal is replaced with another according to a wipe pattern. For a Background transition, the video signal on the Background bus is replaced by the video signal on the Preset bus according to the wipe pattern. In the example below, a line wipe is being used. During the transition, both the Background bus and the Preset bus are on-air. Only after the transition has completed do the crosspoint selection flip-flop between the buses.

Figure: Wipes

The Pattern Select menu, displayed when a wipe is selected, shows 32 pre-assigned patterns, and 8 user-assignable patterns.