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GLOSSARY
Aspect Ratio
The ratio of width to height of an image or a screen. Typical video
aspect ratios are 16:10 and 16:9.
Bit Depth
The higher the bit depth of an LED panel, the more colors it is
capable of reproducing. Bit depth quantifies how many unique
colors an LED panel is capable of or are available in an LED panels
color palette. The higher the bit depth, the greater level of color
precision. For a grayscale video content, the bit depth quantifies how
many unique shades are available.
Brightness
Brightness in an LED wall refers to how much illumination comes
from the LED panels. There is a difference between the Maximum
Brightness which is the brightest possible setting and the Calibrated
Brightness which is the maximum setting at which all LEDs are the
same brightness. With Maximum brightness, it is possible that not
ALL the LEDs will be at that brightness level, it is the brightest
that some LEDs in the panel will display. Brightness is particularly
important if you will use LED walls in high ambient light such as
sunlight or heavily lit venues.
BTU
The British Thermal Unit is a measurement of how much heat is
emitted from a device.
Certification
Certifications ensure that an LED wall has been tested and complies
with emissions, power, and safety regulations. Look for the following
certifications to ensure your LED walls comply with regulations.
• FCC – This mark ensures the LED panels will
not interfere with audio or radio signals
• ETL – Proves compliance with power safety standards.
• EMC – This mark shows compliance with
electromagnetic emissions standards and ensures
the LED Panels will not interfere with other gear.
• UL – UL certification is an assurance that companies follow
UL's safety standards with continual checks to make sure
the products are constructed correctly and continue
to comply with the designated safety standards.
Chassis
The frame that holds LED modules, the power supply, and receiving
card in an LED panel is the chassis.
Closest Viewer
The closest viewer specification is an estimation by the manufacturer
of LED panels that describes how far the LED wall should be
mounted from the closest viewer. Ideally, this rating is the distance
from which a viewer will not be able to see the individual pixels in a
video wall.
Color Correction
Color correction is part of customizing an LED walls color by using
a video processor. Adjustments to the color, contrast, and exposure
enables video content to appear lifelike — natural and unprocessed.
Contrast
The difference in appearance between the lightest part of an image
and the darkest part of an image.
