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Recommended separation distances between portable and mobile
RF communications equipment and the equipment
RATED MAXIMUM
OUTPUT POWER OF
TRANSMITTER
W
Separation distance according to frequency
of transmitters in meters
150 kHz to 80 MHz
d=1.2/V1]
√
P
80 MHz to 800 MHz
d=1.2/V1]
√
P
800MHz to 2.5 GHz
d=2.3
√
P
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the recommended
separation distance
d
in meters (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.
ELECTROMAGNETIC IMMUNITY
This equipment is intended for use in the electromagnetic environment specified below.
The user of this equipment should assure that it is used in such an environment.
IMMUNITY AGAINST
IEC 60601-1-2: (4TH
EDITION) TEST LEVEL
ELECTROMAGNETIC
ENVIRONMENT
Professional
Healthcare
Facility
Environment
Home
Healthcare
Environment
Electrostatic discharge,
ESD (IEC 61000-4-2)
Contact discharge: ±8 kV
Air discharge: ±2 kV,
±4 kV, ±8 kV, ±15 kV
Floors should be wood,
concrete, or ceramic tile.
If floors are covered with
synthetic material, the relative
humidity should be kept at
levels to reduce electrostatic
charge to suitable levels.
Mains power quality should be
that of a typical commercial or
hospital environment.
Equipment which emits high
levels of power line magnetic
fields (in excess of 30A/m)
should be kept at a distance
to reduce the likelihood of
interference.
If user requires continued
operation during power
mains interruptions, ensure
that batteries are installed
and charged. Ensure that
battery life exceeds longest
anticipated power outages
or provide an additional
uninterruptible power source.
Electrical fast
transients / bursts
(IEC 61000-4-4)
Power supply lines: ±2 kV
Longer input / output
lines: ±1 kV
Surges on AC mains
lines (IEC 61000-4-5)
Common mode: ±2 kV
Differential mode: ±1 kV
3 A/m power
frequency magnetic
field 50/60 Hz
(IEC 61000-4-8)
30 A/m
50 Hz or 60 Hz
Voltage dips and
short interruptions
on AC mains input
lines (IEC 61000-4-11)
Dip>95%, 0.5 periods
Dip 60%, 5 periods
Dip 30%, 25 periods
Dip >95%, 5 seconds
This equipment is intended for use in the electromagnetic environment
specified below. The customer or the user of this equipment
should assure that it is used in such an environment.
IMMUNITY TEST
IEC 60601-1-2: 2014 (4TH
EDITION) TEST LEVEL
ELECTROMAGNETIC
ENVIRONMENT - GUIDANCE
Professional
Healthcare Facility
Environment
Home
Healthcare
Environment
Conducted RF
coupled into lines
(IEC 61000-4-6)
3V (0.15 - 80 MHz)
6V (ISM bands)
3V (0.15 - 80 MHz)
6V (ISM &
Amateur bands)
Portable and mobile RF communications
equipment (including cables) should
be used no closer to any part of the
equipment than the recommended
separation distance calculated from the
equation applicable to the frequency of
the transmitter as below.
Recommended separation distance:
d=1.2
√
P
d=1.2
√
P 80 MHz to 800 MHz
d=2.3
√
P 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:
Radiated RF
immunity (IEC
61000-4-3)
3 V/m
80 MHz - 2.7 GHz
80% @ 1 KHz
AM Modulation
10 V/m
80 MHz - 2.7 GHz
80% @ 1 KHz
AM Modulation
The ISM (industrial, scientific and medical) bands between 150 kHz 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.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) tele-
phones 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 mea-
sured field strength in the location in which the equipment is used exceeds the applicable
RF compliance level above, the equipment should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as reorient-
ing or relocating the equipment.