Operating instructions
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2.5.3.
Electromagnetic compatibility.
The SERENITY NEXT chair does not cause influences of an electromagnetic nature or other type with other equipment, nor is it
susceptible to influences from other devices, and is compliant with the requirements of the harmonized standard EN 60601-1-2.
The following tables provide details on the electromagnetic environment in which the product can be used.
Emission aspects.
Emission test
Conformity
Electromagnetic environment - guide
RF Emissions
Cispr 11
Group 1
The product uses RF energy for its internal function only.
Therefore, its RF emissions are extremely low and not likely to cause interference with nearby electronic devices.
RF Emissions
Cispr 11
Class B
It is possible to use the equipment in all buildings, including domestic use buildings, and those directly connected to
a public power supply network with a low voltage supplying buildings for domestic use, taking installation steps, and
guaranteeing an increased installation distance for potentially sensitive devices.
Harmonic emissions
IEC 61000-3-2
Class A
Conformity
It is possible to use the equipment in all buildings, including domestic buildings, and those directly connected to a
public power supply network with a low voltage supplying buildings for domestic use.
Emission fluctuations
voltage/flicker IEC61000-3-3
Conformity
Immunity aspects.
The SERENITY NEXT chair is intended for use in an electromagnetic environment under specification. The customer or user should ensure that it is used correctly in such an environment.
Immunity test
Test level EN 60601-
1-2
Conformity level
Electromagnetic environment - guide
Electrostatic discharge (ESD)
EN 61000-4-2
6kV contact
8kV air
6kV contact
8kV air
Floors should be wood, concrete or ceramic tile. If the floors are covered with
synthetic material, the relative humidity should be at least 30%.
Burst / Fast transient
EN 61000-4-4
2kV power supply lines
2kV power supply lines
Mains power quality should be that of a typical commercial or hospital envi-
ronment.
Surge
EN 61000-4-5
1kV differential mode
2kV common mode
1kV differential mode
2kV common mode
Mains power quality should be that of a typical commercial or hospital envi-
ronment.
Voltage dips, short interruptions
and voltage variations on power
supply input lines
EN 61000-4-11
< 5% UT (>95% dip UT)
for 0,5 cycles
40% UT (60% dip UT)
for 5 cycles
70% UT (30% dip UT)
for 25 cycles
< 5% UT (>95% dip UT)
for 5 seconds
< 5% UT (>95% dip UT)
for 0,5 cycles
40% UT (60% dip UT)
for 5 cycles
70% UT (30% dip UT)
for 25 cycles
< 5% UT (>95% dip UT)
for 5 seconds
Mains power quality should be that of typical commercial or hospital environ-
ment. 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.
Power frequency magnetic field
EN 61000-4-8
3 A/m
3 A/m
Magnetic power frequency fields should be that of a typical commercial or
hospital environment.
RF immunity aspects.
The device is intended for use in the electromagnetic environment specified below. The customer or the user of the device should ensure that it is used in such an electromagnetic environment.
Immunity test
Test level EN
60601-1-2
Conformity level
Electromagnetic environment - guide
RF Conducted
EN 61000-4-6
3 Veff from 150kHz to
80MHz
3 Veff from 150kHz to 80MHz
Portable and mobile RF communication equipment should be used no closer to any
part of the device, including cables, than the recommended separation distances calcu-
lated from the equation, applicable to the frequency of the transmitter.
Recommended separation distance:
d = 1,2
P from 150kHz to 80MHz
d = 1,2
P from 80 MHz to 800 MHz
d = 2,3
P from 800 MHz to 2,5 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 me-
ters (m).
RF Radiated
EN 61000-4-3
3 Veff from 80MHz to
2,5GHz
3 Veff from 80MHz to 2,5GHz
Field strength from fixed RF transmitters, as determined in 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:
Recommended separation distance between portable and mobile RF communication equipment and the device.
The SERENITY NEXT chair 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 portable and mobile RF communication equipment (transmitters) and the device as recommended below, according
to the maximum output power of the communication equipment.
Rated maximum output power
of transmitter (W)
Separation distance according to frequency of the transmitter (m)
From 150kHz to 80MHz
d = 1,2
P
From 80MHz to 800MHz
d = 1,2
P
From 800MHz to 2GHz
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 with a maximum output power not listed above, the recommended separation distance d in meters (m) can be determined using the equation applicable to the frequency of
the transmitter, where P is the maximum 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.
(2) These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
