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Chapter 13 EMC Information
163
Guidance and Manufacturer’s Declaration - Electromagnetic
Immunity
This device is intended for use in the electromagnetic environment specied below. The user of this
device should make sure it is used in such an environment.
Immunity Test IEC 60601 Test
Level
Compliance
Level
Electromagnetic Environment -
Guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
outside ISM bands
a
10Vrms
150 kHz to 80 MHz
in ISM bands
a
10 V/m
80 MHz to 2.5 GHz
3 V
10 V
10 V/m
26 MHz to 2.5 GHz
Portable and mobile RF communications equipment
should be used no closer to any part of the device,
including cables, than the recommended separation
distance calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance:
d = 1.2 P
d = 1.2 P
d = 1.2 P 80 MHz to 800 MHz
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 meters (m).
Field strengths from xed 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 aected by absorption and
reection from structures, objects, and people.
a Field strengths from xed 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 xed RF transmitters, an electromagnetic site survey should
be considered. If the measured eld strength in the location in which the device is used exceeds the applicable
RF compliance level above, the device should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the device.
b Over the frequency range 150 kHz to 80 MHz, the eld strengths should be less than 3 V/m.