Tektronix 2200 Manual Do Utilizador

4-75

The

Grab

feature updates frame store with new input data and 

freezes the new data. If freeze is off (moving video is coming out 
of the frame store), pressing the 

 button turns on freeze. You 

can then press the 

button to turn freeze off. If freeze is on 

and

 is pressed, frame store is unfrozen for two fields and 

then frozen again. It holds two fields as it updates the other two. 
Layering is possible when frame store is used as a background 
input on an M/E, and that M/E is fed into the frame store,.

Dropshadow mode is functional with only primary video inputs 
that have an associated linear key signal, or an M/E in layered 
mode. Clip and gain adjustments are not available. Dropshadow 
mode does not reduce the bandwidth of the key channel.

If you use a source that does not have an associated key signal, the 
Dropshadow Mode produces a full raster key signal (4x3 aspect 
ratio).

Drop Shadow is added to the key signal; the video output is 
unaffected. Therefore the Frame Store video and key must be 
composited on top of another layer in order to see the 
dropshadow.

The 

 control adjusts the density of the drop shadow. 

 and 

 controls position the drop shadow 

anywhere on the screen. You can use 

 (Frame 

Store Menu) to blur the drop shadow.