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Electromagnetic Interference (EMI)
Electromagnetic Interference (EMI) is any signal or emission, radiated in free space or conducted along
power or signal leads, that endangers the functioning of radio navigation or other safety service or
seriously degrades, obstructs, or repeatedly interrupts a licensed radio communications service. Radio
communications services include, but are not limited to, AM/FM commercial broadcast, television,
cellular services, radar, air-traffic control, pager, and Personal Communication Services (PCS). These
licensed radio services, and unlicensed radio services, such as WLAN or Bluetooth (along with
unintentional radiators such as digital devices, including computer systems), contribute to the
electromagnetic environment.
Electromagnetic Compatibility (EMC) is the ability of items of electronic equipment to function properly
together in the electronic environment. While this system has been designed and determined to be
compliant with regulatory agency limits for EMI, there is no guarantee that interference will not occur in
a particular installation. These systems are designed, tested, and classified for their intended
electromagnetic environment.
These electromagnetic environment classifications generally refer to the following harmonized
definitions:
•
Class B products are intended for use in residential/domestic environments but may also be
used in non- residential/non-domestic environments.
NOTE: The residential/domestic environment is an environment where the use of
broadcast radio and television receivers may be expected within a distance of 10 m
from where this product is used.
•
Class A products are intended for use in non-residential/non-domestic environments. Class
A products may also be utilized in residential/domestic environments but may cause
interference and require the user to take adequate corrective measures.
If this system does cause interference with radio communications services, which can be determined by
turning the system off and on, try to correct the interference by one or more of the following measures:
•
Reorient the receiving antenna.
•
Relocate the system with respect to the receiver.
•
Move the system away from the receiver.
•
Plug the system into a different outlet so that the system and the receiver are on different
branch circuits.
If necessary, consult an authorized Technical Support representative or an experienced radio/television
or EMC technician for additional suggestions.
Information Technology Equipment (ITE), including peripherals, expansion cards, printers, input/output
(I/O) devices, monitors, and so on, that are integrated into or connected to the system should match the
electromagnetic environment classification of the computer system.
Regulatory Safety Guide for Edge 510 Devices:
pg. 7
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