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Guidance and manufacturer’s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below.
The customer or the user of the device should assure that it is used in such environment.
Immunity
test
IEC 60601
test level
Compliance
level
Electromagnetic environment Guidelines
Conducted RF
IEC 61000-4-6
3 Veff
150 kHz
to 80 MHz
10 V eff
Portable and mobile RF communication equip-
ment 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.
Radiated HF
IEC 61000-4-3
3 V/m
80MHz
to 2,5GHz
10 V/m
Recommended separation distance:
d = 3,5/3 * SQRT (P/W)
d = 3,5/3 * SQRT (P/W) 80 MHz to 800 MHz
d = 7/3 * SQRT (P/W) 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 recom-
mended separation distance in metres (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site surveyaa,
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 80Hz and 800MHz, 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.
a
Field 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 electromag-
netic site survey should be considered. If the measured field 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 reorienting or relocating the device.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V / m.
Recommended separation distances for portable and mobile RF communication
equipment and the device
The device is intended for use in the electromagnetic environment in which radiated RF
disturbances are controlled. The customer or user of the device can help prevent
electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communication equipment (transmitters) and the device as recommended below,
according to the maximum output power of the communications equipment.
Rated maximum
output power of
transmitter (W)
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz
d = 3,5/3 * SQRT (P)
80 MHz to 800 MHz
d = 3,5/3 * SQRT (P)
800 MHz to 2,5 GHz
d = 7/3 * SQRT (P)
0.01
0.1
0.1
0.2
0.1
0.4
0.4
0.7
1
1.2
1.2
2.3
10
3.7
3.7
7.4
100
11.7
11.7
23.3
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in metres (m) can be determined using the equation applicable to the
frequency of the transmitter, where P is the maximum output power rating of the transmitter
in watts (W) according to the transmitter manufacturer.
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.
