DVDO AVLab TPG Guía de usuario descargar pdf (Pagina 29)

DVDO AVLab TPG - 4K Test Pattern Generator

DVDO AVLab TPG 29 A.04

noticeable, then either using deep color (10 or 12 bits) assuming your source and content is compatible or

adding a high quality video processor like the DVDO iScan Duo is an excellent solution.

** Note: Grey ramp is only available if the output is set to YC

Solid colors

These patterns are normally used with a color meter and software to read specific color levels. IRE stands

for International Radio Engineers and it is a relative scale, NOT an absolute. It defines the volt peak

to peak video divided up into 140 IRE units. This is done to make numbers for luminance levels easier to

communicate. In the ISF Training Manual, it is described as the amplitude of the video signal from

blanking (zero volts) to peak white is 0.714286 volts or 100 IRE units. Synchronization signals extend

from blanking to -0.285714 volts or -40 IRE units.

Dynamic Patterns

These patterns are generated by a connected computer, normally a calibration software package like

CalMAN or Chromapure. A custom USB/Serial command

is used to precisely define the color as well as the size

of the window.

Note that the serial command (AF) accepts input in RGB

only and the output is set by the output settings on the

AVLab OSD (or serially controlled).

If the output setting is currently RGB, then a triplet of

16, 16, 16 (limited range black) would be sent to AVLab

as 0, 0, 0 (0% for each) and be output as 16, 16, 16 in

the center. If the output setting is YC, then the output

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 75 76

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DVDO AVLab TPG Guía de usuario Pagina 29