Grass Valley Maestro Master Control v.2.4.0 - Manual (Page 247)

243 MAESTRO User Manual
Section 2 — Basic Maestro Operation
Upstream Keyer Operation
The following information assumes that Upstream is ON and Downstream is
OFF.
Placing a Key on Air
Use the following procedure when the next event is to be a key:
1. Select the proper main (background) source on the Preset bus. If the
background source is already on the Program bus, select the same
source on the Preset bus.
2. Use the Source Assign group to select the desired key source as
described above. Assign the key source to one of the keyers by pressing
PST, e.g., for Keyer 1.
3. Preview the key by pressing PST again.
4. Use the Edit button group to select KEY 1. Set up the type of key ( Self,
Clip, Gain , etc) as described above, watching the Preset monitor.
5. Perform a Take transition. Keyer 1 is now on Program.
When only inserting a key, without changing the main source, a dissolve or
cut should be used, and not a fade–or the main source will go to black and
back up again. When the transition is complete, the PGM light will go on,
and the PST light will go out, indicating the key is now on Program.
• If the next event is the removal of the key which is now on air, perform
another transition, and the active keyer will move back to Preset.
• If the next event is from another key source, go to the next section.
Replacing One Key with Another (No Background Change)
Assuming that one keyer is already on Program:
Send a key source to another keyer (e.g. Keyer 2), toggle on the second
keyer on Preset. Check (or set up) the key. When a transition is made, the
two keyers will trade places, and the new key will move to the Program
bus.
• Another key source can now be set up, etc. When the last key is on
Program, toggle OFF the Preset key.
• To remove the last key from Program, perform a transition. Then
toggle OFF the Preset key.