Dell PowerVault 530F User's Guide - Page 32
to their corresponding connectors on the back of the system.
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Electromagnetic interference (EMI) and radio frequency interference (RFI) from a system can adversely affect devices such as radio and TV receivers operating near the system. Radio frequencies emanating from a system can also interfere with cordless and low-power telephones. Conversely, RFI from high-power telephones can cause spurious characters to appear on the system's monitor screen. RFI is defined as any EMI with a frequency above 10 kilohertz (kHz). This type of interference can travel from the system to other devices through the AC power cable and power source or through the air like transmitted radio waves. The Federal Communications Commission (FCC) publishes specific regulations to limit the amount of EMI and RFI emitted by computing equipment. Each Dell system meets these FCC regulations.To reduce the possibility of EMI and RFI, follow these guidelines: Operate the system only with the system cover installed. Ensure that all expansion slots are covered either by a card-mounting bracket or by a metal filler bracket and that all drive bays have a drive and/or a metal insert installed. These brackets and metal inserts are available from Dell. Ensure that the screws on all peripheral cable connectors are securely fastened to their corresponding connectors on the back of the system. Always use shielded cables with metal connector shells for attaching peripherals to the system. To prevent the possibility of RFI from a system affecting TV reception, follow these guidelines: Keep any TV set at least 6 ft away from the system. Use cable TV when possible. Use a directional outdoor TV antenna. Attach line filters to the TV set. Use 75-ohm coaxial cable for the TV set rather than twin-lead antenna wire. If interference occurs, rotate the system or the TV set 90 degrees. B-6 Dell PowerVault 530F SAN Appliance User's Guide