24
Guidance and manufacturer's declaration - electromagnetic immunity
The system is intended for use in the electromagnetic environment specified below. The customer or user of the system should
assure that it is used in such an environment.
Immunity test
IEC 60601 Test Compliance Level
Electromagnetic environment - guidance
Conducted RF
IEC 61000-4-6
3Vrms from 150kHz to 80 MHz at 80% AM 1kHz
6Vrm, 80% AM 1kHz at ISM frequencies listed below:
WARNING:
Portable RF communications
equipment (including peripherals such as
antenna cables and external antennas)
should be used no closer than 30 cm (12
inches) to any part of the injection system
unless a greater separation distance is
required as indicated by the equation.
Otherwise, degradation of the performance
of this equipment could result.
Recommended separation distance
d
= 1.17
Radiated RF
IEC 61000-4-3
3Vrms from 80 MHz to 2.7 GHz at 80% AM 1kHz
and specific ISM bands listed below:
d
= 1.17
80 MHz to 800 MHz
d
= 2.33
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 meters
(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:
Non-ionizing Radiation Symbol
(IEC TR 60878, 5140)
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 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 system is used exceeds the applicable RF compliance level above, the
system should be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the system.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Frequency
(MHz-ISM List)
Test Level
(Vrms)
1.8 - 2.0
6
3.5 - 4.0
6
5.3 - 5.4
6
6.765 - 6.795
6
7.0 - 7.3
6
10.1- 10.15
6
13.553 - 13.567
6
14.0 - 14.2
6
18.07 - 18.17
6
21.0 - 21.4
6
24.89 - 24.99
6
26.957 - 27.283
6
28.0 - 29.7
6
40.66 - 40.70
6
50.0 - 54.0
6
Frequency
(MHz)
Modulation
Type
Modulation
Frequency
Field
Strength
(Volts/meter)
385
Pulse
18 Hz
27
450
Pulse
18 Hz
28
710
Pulse
217 Hz
9
745
Pulse
217 Hz
9
780
Pulse
217 Hz
9
810
Pulse
18 Hz
28
870
Pulse
18 Hz
28
930
Pulse
18 Hz
28
1720
Pulse
217 Hz
28
1845
Pulse
217 Hz
28
1970
Pulse
217 Hz
28
2450
Pulse
217 Hz
28
5240
Pulse
217 Hz
9
5500
Pulse
217 Hz
9
5785
Pulse
217 Hz
9
