Barco Event Master E2 Series, Руководство пользователя

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R5905948 /12 Event Master Devices 39
Other
EC-30 EC-50 EC-200/EC-210
• USB port for connection to host
computer
• Status LEDs and color coded
LCD displays
• Auto-ranging 12v, 2.08a power
supply (100-250 VAC)
• 1x work light (flexible support)
• 2x flexible ribbon LED (backlight
in front face and back face)
• Auto-ranging mains input (90-
250 VAC)
• 2x work lights (flexible support)
• 2x flexible ribbon LED (backlight
in front face and back face)
• Auto-ranging mains input (90-
250 VAC)
3.4 Terms and definitions
3G
A 3 Gbit/s serial digital 10-bit or 12-bit video interface (SMPTE 424M and 425M).
AUX (auxiliary Output)
A video output that can show any source and seamlessly cut between them.
Background (BG)
Typically an unscaled source originating from a computer ’ s multi-head graphics card, or a frame grab from a
scaled source. An Event Master processor can use any input signal and assign it as a Background source,
provided it is at the same resolution as is the destination. The Background appears at the system
’ s lowest
layer priority and does not use any system scaler resources.
Chroma Key
A type of key where the hole-cutting information is derived from a color rather than from a video level. An
common example on television, is when the weatherman appears to be standing in front of a map. The map
itself is a video signal, and the weatherman is in fact standing in front of a green (or blue) screen. On the
switcher, the Chroma Key process electronically subtracts the color from the foreground image, and replaces
it with video from the background image to form a composite image.
Clip, Gain, Opacity
In switcher terminology, the process of fine-tuning a key of any type (luminance, linear, or chroma). Clipping
sets the threshold for the hole cutting circuitry, while "gain" defines the range and sensitivity of adjustment.
The "opacity" is the transparency or density of the key, as revealed over a background.
Colorspace
All video signals have a colorspace. Versions are RGB, YUV or YrYbYc. They also have a range like 16 -235 =
Reduced or Full 0-255.
There is also a color processing scheme that allow bandwidth saving. Full would be 4:4:4 and versions include
4:2:2 and 4:2:0
Computer Video
A generic term indicating video that originates from a computer platform. A progressive scan signal that
follows VESA (Video Electronics Standards Association) standards, with typical resolutions of 800 x 600, 1920
x 1080, UHD and 4K etc.
Crosspoint
Traditionally the button that selects the input required on a particular switcher bus. But in Event Master device
the actual backbone of the processors who routes the internal video signals.
Cut
Cut is an instantaneous switch from one video source to another.
General