Preheat can be used to warm filaments in the cue immediately preceding an intensity upfade from 0. Preheat values can be assigned to channels individually in patch (see Patch > Attributes).
Preheat is assigned on a cue (or cue part) basis. If assigned, any channel in that cue with a preheat value assigned in patch will fade to that intensity in the cue immediately preceding the cue with the preheat flag. Cues with a preheat flag will display an “P” in the preheat flag column (indicated by a “P” at the top of the column) in the PSD and Cue List Index.
When a channel is in a preheat state, a “Ph” is displayed in the intensity field of that channel. When a preheat is executed, the preheat value is established using the upfade time of the associated cue. It is possible to hold the [Data] key to see the actual preheat values.