Belden Grass Valley Kayenne K-Frame, Инструкция по установке и обслуживанию

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196 KAYENNE K-FRAME — Installation & Service Manual
Section 5 — Basic Configuration
Frame Operating Mode
The selected Frame Operating Mode determines the K-Frame’s video input
and output formats (excluding MatchDef and SetDef) and the internal pro-
cessing used for the video.
About PSF Video, Supported Live Mode, and Film Mode
Progressive Segmented Frame (psf) video splits each progressive video
frame raster into even and odd lines, creating two fields for each frame that
can be sent through video equipment using the same transport protocol as
an interlaced image. Unlike interlaced video, the two fields making up that
progressive frame represent the same instant in time. When the psf image
is to be displayed, the monitor puts the progressive image back together for
display at the same instant on the screen.
The fact that psf video is actually a progressive image that has been broken
up means that a switcher needs to do a number of things differently than
when processing an interlaced image. This includes making sure cuts occur
on frame boundaries (not between the even and odd fields) and DPM fil-
tering is done in an appropriate manner. In addition to selecting and com-
bining incoming video that contains motion, a switcher can also internally
generate movement in the final video (like wipes and DPM moves). When
psf video is displayed in a non-film environment, wipes, DPM moves, and
other internally generated motion can look jerky at frame rates lower than
30 times per second. The K-Frame uses a “Live Mode” type of psf pro-
cessing, where motion generated in the switcher is updated at the field rate.
This makes that internally generated motion look smoother.
An alternative “Film Mode” of processing, which the K-Frame does not
support, is intended for use when the final output is only film. In this mode
all of the motion in the image only changes on frame boundaries, and, in
24psf video for example, all motion is only updated 24 times per second. If
the psf video has no switcher generated motion, Live Mode and Film Mode
processing is exactly alike.
When the K-Frame is set to a psf Frame Operating Mode, it uses “Live
Mode” processing for smother internally generated motion, while
retaining some “Film Look” aesthetics.
Other Settings
Matte Limiting
Matte Limiting determines how the matte generators produce colors.
Limits can be imposed to prevent downstream signal problems.
None – In this mode, no limiting is imposed. Analog signal paths and mon-
itors may behave poorly to some colors produced in this mode.