GRASS VALLEY KARRERA, Installation & Service Manual

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Basic Configuration
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Other Settings
Command Processing
These controls determine when commands (like source selections or the initiation of mixes
or wipes) will be enacted by the system (also known as field dominance). These controls
can be useful for consistent match frame editing.
Any Field – The action will occur at the start of the next field, either even or odd. Use this
setting if you are not going to edit the video output and want the fastest response.
Even Field – The action will always occur at the start of the next even field. This is probably
only appropriate if your edit controller is set to edit in the middle of a frame.
Odd Field – The action will always occur at the start of the next odd field. This is the normal
setting for almost all conditions, especially when the video output will be edited, and is
compatible with most video editing systems that use the frame boundary for edits. This
setting is essential, however, when controlling external devices like DDRs that execute
commands only at the beginning of the frame.
Default iDPM Crop
Default crops are intended to define the extent of a standard image for a facility. The
Default iDPM Crop controls adjust cropping when individual iDPM channel crop is turned
off. Individual iDPM cropping is used to adjust for variations in individual sources.
SMPTE RP-187 establishes recommended practices for standard image sizes (production
aperture, clean aperture). If a facility conforms to these practices, the system default values
will be correct and no adjustment should be necessary. Changing the default crops is not
recommended, unless absolutely necessary.
Unfortunately, not all video images have the transition to blanking (black) in exactly the
same place. Normally, these blanking variations are hidden at the extreme edges of the
picture and are not visible. If an image smaller than expected is transformed, however,
black lines can occur at its edges, which are now visible because they have moved inside
the visible picture area. If it is necessary to compensate for variations in your facility's
nominal blanking, adjust the default crops so they just remove black edges on the facility’s
normal image.
The 4:3 and 16:9 aspect ratios have different default crops.
Crop Edge – Allows setting alternative cropping for iDPM processing.
Unity – Resets iDPM cropping to factory default.
Timing Analyzer
The Video Settings menu also has a timing analyzer and system timing adjustments (see
the Kayenne/Karrera/GV Korona User Manual ).
IP SFP Statistics Web Access
The IP SFP Statistics can be accessed by entering the Video Frame’s IP Address into a
browser from a PC on the same network as the Frame. Buttons are provided to reset packet
counts for each I/O board and to refresh the page (refreshes the entire webpage).