Guidance and manufacturer’s
The
Immunity | Complianc | Electromagnetic environment— | |
test | test level | e level | guidance |
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| Portable and mobile RF communications |
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| equipment should be used no closer to any |
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| part of the |
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| cables, than the recommended separation |
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| distance calculated from the equation |
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| applicable to the frequency of the transmitter. |
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| Recommended separation distance |
Conducted RF | 3 Vrms | 3 Vrms | d = 1.17 √P |
IEC | 150 kHz to 80 MHz |
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Radiated RF | 10 V/m | 10 V/m | d = 0.35 √P 80 MHz to 800 MHz |
IEC | 80 MHz to 2.5 GHz |
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| d = 0.70 √P 800 MHz to 2.5 GHz |
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| where P is the maximum output power rating |
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| of the transm tter in watts (W) according to the |
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| transmitter manufacturer and d is the |
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| recommended separation distance in meters |
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| (m). |
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| Field strengths from fixed RF transm tters, as |
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| determined by an electromagnetic site |
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| survey,a should be less than the compliance |
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| level in each frequency range.b |
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| Interference may occur in the vicin ty of |
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| equipment marked with the following symbol: |
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NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all s tuations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
aField strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transm tters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the
bOver the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
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