Glossary - SMART Board 4000 Series Installation Best Practices

Glossary

active cables
Cables with powered components
AEC
Acoustic echo cancellation
American Wire Gauge (AWG)
American Wire Gauge (AWG) is a standardized system that measures wire diameter. In this
system, smaller diameters have higher gauge numbers. AWG is used primarily in North America.
aspect ratio
Aspect ratio refers to the proportional relationship between an image's height and width. For
example, an aspect ratio of 16:9 means that the width of the image is 1.77 times greater than its
height (16 ÷ 9 = 1.77).
balun
A transformer that converts an unbalanced signal to a balanced one or vice versa
compression encoding scheme
The type of compression used to reduce file sizes, making them easier to send and store
electronically. Some examples of common formats are JPEG, GIF and MPEG.
critical bend radius
A measurement of the degree to which a cable can be bent to before it is damaged. A cable's
bend radius should not be less than ten times the diameter of the cable. The cable's
manufacturer should be able to provide you with the cable's critical bend information.
DHCP
Dynamic Host Configuration Protocol
DVI
Digital Video Interface
EDID
Extended Display Identification Data
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