6766
Table 3 continued
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. The ISM(industrial, scientific and medical) bands between 0,15 MHz and 80 MHz
are 6,765 MHz to 6,795 MHz;13,553 MHz to 13,567 MHZ;26,957 MHz to 27,283 MHz; and
40,66 MHz to 40,70 MHz. The amateur radio bands between 0,15 MHz and 80 MHz
are 1,8 MHz to 2,0 MHz,3,5 MHz to 4,0 MHz,5,3 MHz to 5,4 MHz,7 MHz to 7,3 MHz,10,1 MHz
to 10,15 MHz,14 MHz to 14,2 MHz,18,07 MHz to 18,17 MHz,21,0MHz to 21,4MHz,24,89 MHz to
24,99 MHz,28,0 MHz to 29,7 MHz and 50,0 MHz to 54,0 MHZ.
B. The compliance levels in the ISM frequency bands between 150 kHz and 80
MHz and in the frequency range 80 MHz to 2,7 GHz are intended to decrease
the likelihood that mobile/portable communications equipment could cause
interference if it is inadvertently brought into patient areas. For this reason,
an additional factor of 10/3 has been incorporated into the formulae used in
calculating the recommended separation distance for transmitters in these
frequency ranges.
C. 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 re-
orienting or relocating the device.
D. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3
V/m.
Recommended separation distances between
portable and mobile RF communications equipment and the device
The device is intended for use in an electromagnetic environment in which
radiation, therefore disturbances are controlled. The customer or the user
of the device can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications
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
eparation distance according to frequency of
transmitter
m
150 kHz to 80 MHz
80 MHz to 800 MHz 800 MHz to 2. 7 GHz
0.01 0.12 0.04 0.07
0.1 0.37 0.12 0.25
1 1.17 0.35 0.7
10 3.7 1.11 2.22
100 11.7 3
.5
7.0
Table 4
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.
NOTE1
：
At 80 MHz and 800 MHz, the separation distance for the frequency range applies.
NOTE2
：
These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
Table 5
Recommended separation distances between RF wireless communications
equipment
The device is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the device
can help prevent electromagnetic interference by maintaining a minimum
distance between RF wireless communications equipment and the device
as recommended below, according to the maximum output power of the
communications equipment.
Frequency
MNz
Maximum
Power
W
Distance
IEC 60601
Test Level
Compliance
Level
Electromagnetic
Environment -
Guidance
385 1.8 0.3 27 27
RF wireless
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
Where P is the maximum
output power rating
of the ransmitter in
watts (W) according
to the transmitter
manufacturer and d
is the recommended
separation distance
in meters (m). Field
strengths from fixed
RF transmitter, as
determined by
an electromagnetic site
survey, should be less
than the compliance
level in each frequency
range. Interference may
occur in the vicinity of
equipment marked with
the following symbol:
450 2 0.3 28 28
710
0.2 0.3 9 9745
780
810
2 0.3 28 28870
930
1720
2 0.3 28 281845
1970
2450 2 0.3 28 28
5240
0.2 0.3 9 9
5900
5785
Note1: These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures,objects and people.
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