29
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in metres (m) can be estimated 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 separation distance for 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.
• Guidance and manufacturer’s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environments listed below, and should only be
used in such environments:
Immunity
test
IEC 60601
test level
Compliance
level
Electromagnetic environment—guidance
Conducted RF
IEC 61000-4-6
3 V rms
At 0.15–80 MHz
6 V rms
At ISM & Radio
Amateur Freq
Not Applicable
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.
Radiated RF
IEC 61000-4-3
Proximity fields
from RF wireless
communications
equipment
IEC 61000-4-3
10 V/m at
80–2700 MHz
AM Modulation
and 9–28V/m at
385–6000MHz,
Pulse Mode and
other Modulation.
The system
shall be tested
as specified
in IEC60601-
1-2 Table 9 for
proximity fields
from RF wireless
communications
equipment using
the test methods
specified in
IEC 61000-4-3
10 V/m at
80–2700 MHz
AM Modulation
and 9–28V/m at
385–6000MHz,
Pulse Mode and
other Modulation.
The system
shall be tested
as specified
in IEC60601-
1-2 Table 9 for
proximity fields
from RF wireless
communications
equipment using
the test methods
specified in
IEC 61000-4-3
Recommended separation distance
d = 1.2
80 MHz to 800 MHz
d = 2.3
800 MHz to 2.7 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.
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
electromagnetic 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.
