24
DL-00096 Rev. 8
Immunity test
Voltage dips, short
interruptions, and
voltage variations
on power supply
input lines
IEC 61000-4-11
Power frequency
(50/60 Hz) magnetic
field
IEC 61000-4-8
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
IEC 60601 test
level
< 5% U
T
(>95% dip in U
T
)
for 0.5 cycle
40% U
T
(60% dip in U
T
)
for 5 cycles
70% U
T
(30% dip in U
T
)
for 25 cycles
<5% U
T
(>95% dip in U
T
)
for 5 sec
3 A/m
3 Vrms 150 kHz
to 80 Mhz
20 V/m 80 Mhz
to 2.5 Ghz
Electromagnetic
environment/guidance
Mains power quality should
be that of a typical
commercial or hospital
environment. If the user
of the Portable Oxygen
Concentrator required
continued operation during
power main interruptions,
it is recommended that the
concentrator be powered
from an uninterruptible
power supply or battery.
Power frequency magnetic
fields should be at levels
characteristic of a typical
commercial or hospital
environment.
Portable and mobile RF
communications equipment
should be used no closer
to any part of the Portable
Oxygen Concentrator,
including cables, than the
recommended separation
distance calculated from the
equation applicable to the
frequency of the
transmitter.
Recommended separation
distance:
d = 1.2
√
P
d = 1.2
√
P 80 MHz to 800
MHz
d = 2.3
√
P 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 meters (m).
Field strengths from fixed
RF transmitters, as deter-
mined 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:
Compliance
level
< 5% U
T
(>95% dip in U
T
)
for 0.5 cycle
40% U
T
(60% dip in U
T
)
for 5 cycles
70% U
T
(30% dip in U
T
)
for 25 cycles
<5% U
T
(>95% dip in U
T
)
for 5 sec
3 A/m
3 Vrms
20 V/m
Note: At 80 MHz and 800 MHz, the higher frequency range applies.
Note: 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, and TV broadcast cannot be predicted theoretical-
ly 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 Portable Oxygen
Concentrator is used exceeds the applicable RF compliance level above,
the concentrator should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as
reorienting or relocating the concentrator.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be
less than 3 V/m.
