Guidance and manufacture’s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below. The customer or
the user of device should assure that it is used in such an environment.
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 an environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment -
guidance
Immunity test IEC 60601 test level
Compliance
level
Electromagnetic environment - guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
Electrical fast
transient/burst
IEC 61000-4-4
Surge
IEC 61000-4-5
Voltage dips, short
interruptions and
voltage variations
on power supply
input lines
IEC 61000-4-11
Power frequency
(50Hz/60Hz)
magnetic field IEC
61000-4-8
30 A/m
50/60Hz
30 A/m
50/60Hz
Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical commercial
or hospital environment.
0 % U
T
; 0.5 cycle
at 0°,45°,90°, 135°,
180°, 225°, 270°,
315°
0 % U
T
; 1 cycle
70 % U
T
; 25/30
cycle
0% U
T
; 250/300
cycle
Not applicable
Mains power quality should be
that of a typical commercial or
hospital environment. If the user
of the device requires continued
operation during power mains
interruptions, it is recommended
that the device be powered from
an uninterruptible power supply
or a battery.
±8 kV contact
±2 kV, ±4 kV, ±8
kV, ±15 kV air
±2 kV for power
supply lines
±1 kV for input/output
lines
± 1 kV line(s) to
line(s)
± 2 kV line(s) to earth
±8 kV contact
±2 kV, ±4 kV, ±8
kV, ±15 kV air
Not applicable
Not applicable
Floors should be wood, concrete or
ceramic tile. If floor are covered with
synthetic material, the relative
humidity should be at least 30%.
Mains power quality should be that
of a typical commercial or hospital
environment.
Mains power quality should be that
of a typical commercial or hospital
environment.
NOTE U
T
is the a.c. mains voltage prior to application of the test level.
Guidance and manufacture’s declaration – electromagnetic immunity
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
10 V/m
80 MHz to 2.7 GHz
80% AM at 1kHz
3 Vrms
150 kHz to 80 MHz
3 V RMS outside the
ISM band, 6 V RMS
in the ISM and
amateur bands
80% AM at 1kHz
Not
applicable
10 V/m
80 MHz to
2.7 GHz
80% AM at
1kHz
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=0.35√p
d=1.2√p
80MHz to 800MHz
：
d=1.2√p
800MHzto 2.7GHz
：
d=2.3√p
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.
Field strengths from fixed RF transmitters, 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:
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.
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.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
A
B
