PESA RCP-CSD, Manual

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RCP-CSD
Glossary 37
Chop Rate
The parameter used to control the switching rate when chopping two signals. The signal switching
rate is determined as follows:
Second) (Switches/ Rate Switching Signal
Rate Chop
cond) (Frames/Se Rate Frame Video
=
For example, a chop rate of 1 used with NTSC signals (30 Frames/Second) will cause the signals
to be switched 30 times per second. A chop rate of 60 used with the same signals will cause them
to be switched every two seconds.
Component
The most basic signal element which can be switched by a single crosspoint. For example, in RGB
video, “Red”, “Green”, and “Blue” are components; in stereo audio, “Left” and “Right” are
components
In Matrix Space, components of like type (“Red” or “Left”) are usually grouped together into
rectangular matrices of crosspoints having contiguous inputs and outputs. These matrices are also
referred to as components and are grouped together into levels.
The example below shows a 2x2 RGB video level made up of three components, “RED”, “GRN”,
and “BLU”.
As a general rule, users control the switching of levels, but component switching is handled
automatically by the switching system. In the example above, a user could specify a single logical
switch, such as VID Input 1 to VID Output 2. This would result in Win3500Plus taking three
physical switches by activating crosspoints (1,2), (3,4) and (5,6).
Component names are one to eight characters in length and are constructed using uppercase
letters, numbers, and spaces. The first character must be a letter.
Composite Video
A type of video signal which contains luminance, chrominance, blanking, and synchronizing
information. NTSC, PAL and SECAM are composite video signals, as opposed to RGB video
which is not.
See also: Vertical Sync Signal.