Specifications

Elo TouchSystems (800) ELO-TOUCH or [phone] • Fax [phone] • www.elotouch.com
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Glossary of “Touch” Terms and Related Technical Terminology
drive
Any data storage device including CD-ROM drive, floppy disk
drive, and hard disk drive.
EDID
Extended Display Identification Data. A VESA standard for data
structures containing the display identity and the basic display
specifications.
electronic radiation standards
International standards established to limit electromagnetic
emissions from monitors. There are currently two important
standards, both derived from regulations originally
established by the Swedish authorities. See also MPR II and
TCO.
EMC
Electromagnetic compatibility. EMC requirements stipulate
that a device shall not cause interference within itself or in
other devices, or be susceptible to interference from other
devices. The European Union was the first governing body to
establish laws (CE) regarding immunity of devices from EMI.
See also CE, EMI, and RFI.
EMI
Electromagnetic interference. This interference in the operation
of a device is caused by incompatibility with ambient signals.
Common sources of EMI include transmitters and receivers
(radio, TV, cell phone), power mains (lightning, surges,
brownouts), appliances, computer oscillators, and electrostat-
ics. Many countries have established laws (such as FCC and
CE) governing EMI source limits. See also CE, FCC, EMC,
and RFI.
ENERGY STAR
®
A voluntary partnership between the U.S. Department of
Energy, the U.S. Environmental Protection Agency, product
manufacturers, local utilities, and retailers. ENERGY STAR
labeled products use less energy than other products.
Partners help promote energy-efficient products by labeling
with the ENERGY STAR logo and educating consumers about
the benefits of energy efficiency.
FCC Class A
A marking FOR OFFICE USE means the design has been
tested for compliance with the U.S. Federal Communications
Commission’s (FCC) Part 15 Class A RF emissions limits,
and is suitable for use in nonresidential settings. Industry
Canada’s RF emissions limits are identical to the FCC’s. See
also IC Class A.
FCC Class B
A marking FOR HOME OR OFFICE USE means the design has
been tested for compliance with the U.S. Federal
Communications Commission’s (FCC) Part 15 Class B RF
emissions limits, and is suitable for use in residential or
nonresidential settings. Industry Canada’s RF emissions limits
are identical to FCC’s. See also IC Class B.
flat panel display
See LCD.
flat square screen
A screen that is flatter and more square than the conventional
CRT screen. The flatter outline reduces picture distortion and
ambient reflections, and allows better use to be made of the
screen area.
flicker
Condition of the display caused by the mismatch of vertical
and horizontal refresh rates, when a phosphor’s illumination
begins to decay prior to being refreshed. The resulting flicker
is particularly detectable with peripheral vision. Flicker can be
eliminated by increasing the refresh rate to a value at or above
70 Hz.
frequently asked question(s) (FAQ)
A list of questions/answers provided by companies related to
their products or Web site.
GS
A German certification, Geprufte Sicherheit ("tested safety").
End products can be GS-certified by TUV for expected safety
concerns, meaning they have been evaluated and have met
German standards. Typical end products are desktop
touchmonitors.
hard disk
A storage device inside a computer, generally designated as
the C: drive. It cannot be seen without opening up the
computer; however, usually a light on the front of the
computer shows when the hard disk is being accessed.
hertz
The unit of frequency named after the physicist Heinrich Hertz
(1857–1894). One hertz (Hz) is equal to one cycle/second.
horizontal frequency
The time it takes to scan each of the horizontal lines that make
up the display, measured in kilohertz (kHz). Horizontal
frequency is directly related to the vertical refresh rate, so that
the greater the number of vertical lines, the higher the
horizontal frequency required.
horizontal scanning frequency
The number of video lines written on the screen every second
(from left to right); also called line frequency and expressed in
kHz. The higher the horizontal scanning frequency, the higher
the resolution and/or the refresh rate, which produces a more
stable image, helping to reduce user eyestrain and fatigue.
I2C bus: access bus standard
A standard-protocol two-wire (clock and data) serial data bus.