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HU-TX500-TECH
173
TX500 series technical manual
In caption mode, the background signal is attenuated by the key in the caption area, and
then the fill is added over the entire picture. The fill signal must be presented against a totally
black background in order to avoid output in unwanted areas of the picture.
In effects mode the keyer produces a mix of the foreground and background inputs. With no
key or with black as key, then output is 100% background and the foreground input is off.
9.8.3 Selecting the follow mode
The follow mode allows each keyer to be set to follow a PST/PGM video transition, a DVE
move or both. The
<FOLLW>
buttons associated with each DSK are used to select the
mode for each DSK.
•
<FOLLOW PGM>
sets the DSK to follow PST/PGM video transitions only.
•
<FOLLOW DVE>
sets the DSK to follow DVE moves only.
•
<FOLLOW BOTH>
sets the DSK to follow either the next PST/PGM video
transition or DVE move.
As with the Keyer mode, the current status is shown on the screen under the heading
‘Follow’, alongside the relevant keyer.
Adding and removing keyers from the system
The default, and maximum, number of keyers available with the TX 510 is two. To add, or
remove keyers, press the
<VIDEO ORDER>
button to access the Video path setup screen.
The diagram shows which keyers are currently configured within the system.