240 KARRERA K-FRAME — User Manual
Section 7 — Switching Basics
NAM transitions pass only the brightest regions of each picture to the
output. During the first half of a NAM transition the original picture retains
its original intensity while the next picture mixes to full intensity. Brighter
areas in the new picture replace any corresponding darker areas of the pre
-
vious picture. During the second half of a NAM transition the previous
picture mixes out of the darker areas of the new picture. FAM transitions
also first fade a new picture to full intensity and then fade the old picture
out, but both full intensity pictures are mixed together to the output during
the transition (
Figure 131). The resulting signal is clipped at white level to
prevent generating illegal video.
Ramping characteristics can be adjusted which allows the full mix point to
be achieved at a preselected point in the transition. This can be useful when
dissolving to and from animated transitions which have high luminance
values.
Select ME, User Transitions. Select the FAM or NAM menu button.
Figure 131. Normal, NAM and FAM Mixes
Transitions from the Master Keyer Transition Area
The Master Keyer Transition area, located on the lower part of the Control
Panel between the Transition and Master E-MEM areas, is provided on the
Karrera Control Panel to allow cut and auto cut keyer transitions of any
delegated ME (
Figure 132), from one convenient location.
0618_00_68_r1
Crossfade
Transition
StartEnd
Midpoint
Current
Picture
Picture
Intensity
Next
Picture
Current
Picture
Next
Picture
NAM, FAM
Transition
StartEnd
Midpoint
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