ResMed Stellar 100 Guia Del Usuario página 35

Voltage dips, <5% Ut (>95% dip in
short Ut) for 0.5 cycle
interruptions
40% Ut (60% dip in
and voltage
Ut) for 5 cycles
variations on
70% Ut (30% dip in
power supply
Ut) for 25 cycles
input lines
IEC 61000-4-11
<5% Ut (>95% dip in
Ut) for 5 sec
Power 3 A/m
frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
Conducted RF 3 Vrms
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF 10 V/m
IEC 61000-4-3 80 MHz to 2.5 GHz
NOTE 1: Ut is the AC mains voltage prior to application of the test level.
NOTE 2: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 3: 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 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 reorienting or relocating the device.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
Recommended separation distances between portable and mobile RF communications equipment and the
device
The device is intended for use in an 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 communications equipment (transmitters) and the device as recommended below, according
to the maximum output power of the communications equipment.
Rated maximum output 150 kHz to 80 MHz
d = 1.17 √P
power of transmitter (W)
0.01 0.17
0.1 0.37
1 1.17
< 12 V (>95% dip in Mains power quality should be that of a typical
240V) for 0.5 cycle commercial or hospital environment.
If the user of the device requires continued
96 V (60% dip in
operation during power mains interruptions, it is
240 V) for 5 cycles
recommended that the device be powered from
168 V (30% dip in
an uninterruptible power source.
240 V) for 25 cycles
<12 V (>95% dip in
240 V) for 5 sec
3 A/m Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.
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 = 1.17 √P
3 Vrms
d = 0.35 √P 80 MHz to 800 MHz
3 V/m
d = 0.70 √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 metres (m).
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:
Separation distance according to frequency of transmitter (m)
80 MHz to 800 MHz
d = 0.35 √P
0.04
0.11
0.35
a
b
800 MHz to 2.5 GHz
d = 0.7 √P
0.07
0.22
0.7
Technical specifications 29