Magni MM-410, Руководство оператора, Страница: 174 / 182

Glossary of Terms
F-2
Chrominance
The part of the video signal with the color information. In component and s-video signals, the
chrominance is carried in a separate channel. In composite, the chrominance is on a subcarrier
in the same channel.
Clamping
Removing slow changes in DC level by all video levels to the blanking level.
Color Burst
The brief color subcarrier that immediately follows the trailing edge of sync.
Color Frame
A sequence of two (in NTSC) or four (in PAL) frames of video. Signals are “in the same color
frame” if they both start with the same phase of burst.
Composite Video
A video signal carried in one channel or on one wire that has all the luminance and chrominance
information. NTSC and PAL are composite video standards.
Configure
To choose options in the MM-410/AVM-510A.
Even Field
Fields 2 and 4 in NTSC; fields 2, 4, 6, and 8 in PAL.
External Reference
A separate video signal, with or without picture information, used to lock or synchronize the
signal being viewed. In the MM-410/AVM-510A, the external reference sync signal must be at
normal video sync levels. 4V sync, used in some video systems, is not acceptable and can
damage the MM-410/AVM-510A.
Field
The amount of video signal required to scan the picture once from top to bottom, including one
vertical interval. In NTSC and PAL, two fields make one frame. Fields are designated as either
odd or even.
Frame
The amount of video signal required to make one complete picture, or two fields. See also,
Color frame.
Gamut
A signal component over levels detection system that indicates when a signal’s component
amplitude levels exceed pre-defined amplitude levels.
GBR
Green, blue, red. These are the components of the video signal as they are first encountered in a
camera. GBR is the same as RGB. In this manual, the letters are given in GBR order, because
the green channel carries the sync pulse, if this signal has any sync at all.