A&D UA-1020CN instruction manual Recommended separation distance

EMC TABLE

Guidance and manufacturer’s declaration – electromagnetic immunity

The A&D unit is intended for use in the electromagnetic environment specified below. The customer or the user of the A&D unit should assure that it is used in such an environment.

Immunity	IEC 60601	Compliance	Electromagnetic environment –
test	test level	level	guidance
			Portable and mobile RF
			communications equipment should
			be used no closer to any part of
			the A&D unit, including cables,
			than the recommended separation
			distance calculated from the
			equation applicable to the
			frequency of the transmitter.

			Recommended separation distance:
Conducted RF	3 V rms	3 V rms	d = 1.2	P
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF	3 V/m	3 V/m	d = 1.2	P	80 MHz to 800 MHz
IEC 61000-4-3	80 MHz to 2,5 GHz
			d = 2.3	P	800 MHz to 2,5 GHz
			where P is the maximum output
			power rating of the transmitter in
			watts (W) according to the
			transmitter manufacturer and d is
			the recommended separation
			distance in metres (m).
			Field strengths from fixed RF
			transmitters, as determined by an
			electromagnetic site survey, a
			should be less than the compliance
			level in each frequency range.b
			Interference may occur in
			the vicinity		of equipment
			marked with the following
			symbol:

NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.

NOTE 2 These guidelines may not apply in all situations. 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 transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the A&D unit is used exceeds the applicable RF compliance level above, the A&D unit should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re- orienting or relocating the A&D unit.

bOver the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.

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