Ross SYNERGY 4000DR-003, Operation Manual, Page: 309 / 332

Synergy Series Operation Guide (v18) Glossary of Terms • GL–3
MIX
— See Dissolve.
MLE
— An abbreviation for multi-level effects.
PGM Output
— The on-air video output of the system.
Primary Input
— Video sources selected by the control panel push-buttons for the crosspoint
buses. These buses are normally labeled “KEY”, “PGM”, and “PST”.
PV Output
— A switcher output that shows the scene that will go on-air when the next
automatic or manual transition takes place.
Self Key
— A key effect in which the same video signal serves as both the key signal and key
fill.
Soft Edge
— A pattern edge effect produced by mixing key source and key fill signals in such a
way that the edge of the pattern is not sharp.
Split Screen
— An effect in which a wipe pattern provides the key source signal. This is known
as a “preset pattern” key.
Tally
— An indicator which illuminates when the associated push-button or control is selected or
is on-air.
Termination
— A means of closing a circuit by connecting a resistive load to it. In video
systems, a termination is typically a 75 ohm resistive load.
Transition
— A controlled change from one video input to another video input or black. The
change can occur through a wipe, cut, dissolve or “DVE Send” effect.
Transition Preview
— A transition seen only on the preview monitor. It may be observed and
adjusted without disturbing the program or “on-air” output.
Video
— The electrical signal produced by a television camera, character generator or other
image source. The signal amplitude varies in relation to the tonal scale from black to white
presented at the source. White produces the highest amplitude; black produces the lowest signal
amplitude.
Wipe
— A transition from one video signal to another, in which the change proceeds according
to the shape of a specific pattern. A moving transition line separates the two picture signals.