Dell Precision M40 User Manual
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Regulatory Notices: Dell Precision™ Mobile Workstation M40 User's Guide
Overview
Electromagnetic Interference (EMI) is any signal or emission, radiated in free space or conducted along power or signal leads, that endangers the
functioning of a 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 services, along with unintentional radiators such as digital devices,
including computers, 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 computer 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. If this equipment does cause interference with radio communications services, which can be
determined by turning the equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures:
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Reorient the receiving antenna.
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Relocate the computer with respect to the receiver.
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Move the computer away from the receiver.
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Plug the computer into a different outlet so that the computer and the receiver are on different branch circuits.
If necessary, consult a Dell Technical Support representative or an experienced radio/television technician for additional suggestions.
Dell computers are designed, tested, and classified for their intended electromagnetic environment. These electromagnetic environment
classifications generally refer to the following harmonized definitions:
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Class A is typically for business or industrial environments.
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Class B is typically for residential environments.
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 computer should match the electromagnetic environment classification of the computer.
A Notice About Shielded Signal Cables: Use only shielded cables for connecting peripherals to any Dell device to reduce the
possibility of interference with radio communications services. Using shielded cables ensures that you maintain the appropriate
EMC classification for the intended environment. For parallel printers, a cable is available from Dell. If you prefer, you can order a
cable from Dell on the World Wide Web at http://accessories.us.dell.com.
Most Dell computers are classified for Class B environments. However, the inclusion of certain options can change the rating of some
configurations to Class A. To determine the electromagnetic classification for your computer or device, refer to the following sections specific for
each regulatory agency. Each section provides country-specific EMC/EMI or product safety information.
FCC Notices (U.S. Only)
Most Dell computers are classified by the Federal Communications Commission (FCC) as Class B digital devices. To determine which
classification applies to your computer, examine all FCC registration labels located on the bottom or back panel of your computer, on card-
mounting brackets, and on the cards themselves. If any one of the labels carries a Class A rating, your entire computer is considered to be a Class
A digital device. If all labels carry an FCC Class B rating as distinguished by either an FCC ID number or the FCC logo (
), your computer is
considered to be a Class B digital device.
Polish Center for Testing and Certification Notice
Wymagania Polskiego Centrum Badan i Certyfikacji
Pozostale instrukcje bezpieczenstwa
Información para NOM (únicamente para México)
EN 55022 Compliance (Czech Republic Only)