Dell OptiPlex GX400 User Manual

Also see for OptiPlex GX400: Setup and quick reference guide Service manual Setup and quick reference guide

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Dell OptiPlex GX400 User Manual Manual pdf 71 page image

Back to Contents PageAdditional InformationDell™ OptiPlex™ GX400 System User's GuideRegulatory NoticesENERGY STAR® ComplianceLimited Warranty and Return PolicyRegulatory NoticesElectromagnetic Interference (EMI) is any signal or emission, radiated in free space or conducted along power or signal leads, that endangers the functioningof a radio navigation or other safety service or seriously degrades, obstructs, or repeatedly interrupts a licensed radio communications service. Radiocommunications services include but are not limited to AM/FM commercial broadcast, television, cellular services, radar, air-traffic control, pager, and PersonalCommunication Services (PCS). These licensed services, along with unintentional radiators such as digital devices, including computer systems, contribute tothe electromagnetic environment.Electromagnetic Compatibility (EMC) is the ability of items of electronic equipment to function properly together in the electronic environment. While thiscomputer system has been designed and determined to be compliant with regulatory agency limits for EMI, there is no guarantee that interference will notoccur in a particular installation. If this equipment does cause interference with radio communications services, which can be determined by turning theequipment off and on, you are encouraged to try to correct the interference by one or more of the following measures:l Reorient the receiving antenna.l Relocate the computer with respect to the receiver.l Move the computer away from the receiver.l Plug the computer into a different outlet so that the computer and the receiver are on different branch circuits.If necessary, consult a Technical Support representative of Dell or an experienced radio/television technician for additional suggestions.Dell computer systems are designed, tested, and classified for their intended electromagnetic environment. These electromagnetic environment classificationsgenerally refer to the following harmonized definitions:l Class A is typically for business or industrial environments.l 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 integratedinto or connected to the system should match the electromagnetic environment classification of the computer system.A Notice About Shielded Signal Cables: Use only shielded cables for connecting peripherals to any Dell device to reduce the possibility of interferencewith 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 athttp://www.dell.com/products/dellware/index.htm.Most Dell computer systems are classified for Class B environments. To determine the electromagnetic classification for your system or device, refer to thefollowing sections specific for each regulatory agency. Each section provides country-specific EMC/EMI or product safety information.FCC Notices (U.S. Only)Most Dell computer systems are classified by the Federal Communications Commission (FCC) as Class B digital devices. However, the inclusion of certainoptions can change the rating of some configurations to Class A. To determine which classification applies to your computer system, examine all FCCregistration 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 labelscarries a Class A rating, your entire system is considered to be a Class A digital device. If all labels carry an FCC Class B rating as distinguished by either anFCC ID number or the FCC logo, ( ), your system is considered to be a Class B digital device.Once you have determined your system's FCC classification, read the appropriate FCC notice. Note that FCC regulations provide that changes or modificationsnot expressly approved by Dell could void your authority to operate this equipment.This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:l This device may not cause harmful interference.l This device must accept any interference received, including interference that may cause undesired operation.Class AThis equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designedto provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses,and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer's instruction manual, may cause harmfulinterference with radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case you will berequired to correct the interference at your own expense.Class BThis equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designedto provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequencyenergy and, if not installed and used in accordance with the manufacturer's instruction manual, may cause interference with radio communications. However,there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or televisionreception, 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 followingmeasures: