840Hxl - Overview
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Overview
The
840Hxl
is a high performance HDMI video test pattern generator. It can
generate 32 preset patterns (including several unique patterns incorporating
motion) at 42 popular, predefined computer and HD video resolutions.
In particular, the MultiTOOLS
®
840Hxl
features:
•
An HDMI output
•
Five dual-function and two single-function control buttons
•
A two-digit 7 segment display
•
An onboard EPROM that saves the last settings
3.1
Defining EDID
The Extended Display Identification Data (EDID) is a data-structure provided by a
display, to describe its capabilities to a graphics card (that is connected to the
display’s source). The EDID enables the
840Hxl
to “know” what kind of monitor is
connected to the output. The EDID includes the manufacturer’s name, the product
type, the timing data supported by the display, the display size, luminance data
and (for digital displays only) the pixel mapping data.
EDID is defined by a standard published by the Video Electronics Standards
Association (VESA).
