Radio frequency interference
Electro-magnetic fields, which include radio frequencies can interfere with the
operation of electronic equipment. EMC Corporation products have been certified to
withstand radio frequency interference (RFI) in accordance with standard
EN61000-4-3. In Data Centers that employ intentional radiators, such as cell phone
repeaters, the maximum ambient RF field strength should not exceed 3 Volts /meter.
The field measurements should be taken at multiple points in close proximity to EMC
Corporation equipment. It is recommended to consult with an expert prior to installing
any emitting device in the Data Center. In addition, it may be necessary to contract an
environmental consultant to perform the evaluation of RFI field strength and address
the mitigation efforts if high levels of RFI are suspected.
The ambient RFI field strength is inversely proportional to the distance and power
level of the emitting device.
Recommended minimum distance from RF emitting device
The following table provides the recommended minimum distances between EMC
arrays and RFI emitting equipment. Use these guidelines to verify that cell phone
repeaters or other intentional radiator devices are at a safe distance from the EMC
Corporation equipment.
Table 5
Minimum distance from RF emitting devices
Repeater power level
a
Recommended minimum distance
1 Watt 9.84 ft (3 m)
2 Watt 13.12 ft (4 m)
5 Watt 19.69 ft (6 m)
7 Watt 22.97 ft (7 m)
10 Watt 26.25 ft (8 m)
12 Watt 29.53 ft (9 m)
15 Watt 32.81 ft (10 m)
a.
Effective Radiated Power (ERP)
Specifications
24 Site Planning Guide VMAX 250F, VMAX 450F, VMAX 850F, VMAX 950F with HYPERMAX OS
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