Tektronix 2200 Manual Do Utilizador
A-9
Examples of Operation With Shaped & Unshaped Fill Video
Incorrect Input Configuration
the switcher when the shaped/unshaped selection in the
Configuration/Inputs/Map Inputs menu is set incorrectly for the
input signal that is mapped to the crosspoint.
Configuration/Inputs/Map Inputs menu is set incorrectly for the
input signal that is mapped to the crosspoint.
each of these cases.
Incorrect Operation With Shaped Fill Video
shaped video output but
UNSHAPED
is selected in the Map Inputs
menu. The
UNSHAPED
selection turns on the input Shaping
circuit, causing the Shaped input signal to be shaped again
(sometimes called a double-multiply). The re-shaped video does
not completely fill the key hole in the Background so a dark halo
appears around the key.
(sometimes called a double-multiply). The re-shaped video does
not completely fill the key hole in the Background so a dark halo
appears around the key.
Figure A-8. Incorrect Operation with Shaped Input
x
+
Invert
Background
Keyhole in Background
Key
Foreground
(Key Fill)
UNSHAPED selected in
Map Inputs Menu
(turns ON Shaping Circuit)
Doubly-Shaped
Video
Background
plus
Foreground
Dark Halo
Around Key
0000-04
Shaped
x