Air Liquide OSIRIS 3 Manual De Uso página 59

a) The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are from 6.765 MHz
to 6.795 MHz; from 13.553 MHz to 13.567 MHz; from 26.957 MHz to 27.283 MHz; and from 40.66 MHz to
40.70 MHz.
b) The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency
range from 80 MHz to 2.5 GHz are intended to reduce the probability of interference that could be caused by
mobile/portable communication devices that might accidentally be introduced into the patient areas. That is
why an additional factor of 10/3 was introduced into the formulae used when calculating the recommended
separation distance for transmitters in these frequency ranges.
c) The field intensity of fixed transmitters such as base stations for radiotelephones (cellular/wireless) and
mobile terrestrial radios, amateur radio, AM and FM broadcasting, and TV broadcasting, cannot be predicted
accurately by theoretical means. To assess the electromagnetic environment caused by fixed RF transmit-
ters, an electromagnetic investigation should be carried out on-site. If the intensity of the field, measured
where the OSIRIS 3 is used, exceeds the aforementioned applicable RF compliance level, then the OSIRIS 3
should be monitored to check that it is operating correctly.
If abnormal performance is observed, additional measures may be required, such as readjusting or reposi-
tioning the OSIRIS 3.
d) In the frequency range from 150 kHz to 80 MHz, the field intensity should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communication
devices and the OSIRIS 3 (IEC 60601-1-2 3rd edition)
The OSIRIS 3 ventilator is intended for use in an electromagnetic environment where RF radiated disturbances
are controlled. The user of the OSIRIS 3 ventilator can help to prevent electromagnetic interference by ensuring
that portable and mobile RF communication devices (transmitters) are kept at least a certain distance away
from the OSIRIS 3 ventilator, as recommended below, according to the maximum output power of the commu-
nication device concerned.
Maximum
150 kHz to 80 MHz
rated trans-
outside the ISM
mitting power
of transmitter
(W)
0.01
0.1
1
10
100
For transmitters for which the maximum rated output power is not specified here above, the recommend-
ed separation distance d in metres (m) can be determined by using the equation applicable to transmitter
frequency, where P is the maximum transmitting power characteristic of the transmitter in watts (W)
according to the transmitter manufacturer.
Note 1: At 80 MHz and at 800 MHz, the separation for the higher frequency range applies.
Note 2: The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are from 6.765
MHz to 6.795 MHz; from 13.553 MHz to 13.567 MHz; from 26.957 MHz to 27.283 MHz; and from 40.66
MHz to 40.70 MHz.
Note 3: An additional factor of 10/3 was introduced into the formulae used to calculate the recommended
separation distance for transmitters in the ISM frequency ranges, between 150 kHz and 80 MHz, and in
the frequency range from 80 MHz to 2.5 GHz. The purpose of this is to reduce the probability of interfer-
ence that mobile or portable communication devices might cause if they are unintentionally introduced
into patient areas.
Note 4: These directives may not apply in all situations. Electromagnetic propagation is affected by absorp-
tion and by reflection from buildings, objects and persons.
Separation distance according to the frequency of the transmitter (m)
150 kHz to
80 MHz inside
bands the ISM bands
0.116 0.12
0.37 0.38
1.16 1.2
3.67 3.79
11.6
YL033700 - Rev. 3a - 2019-02
80 MHz to
800 MHz
0.06
0.19
0.6
1.9
12 6
Technical description - EN
800 MHz to 2.5 GHz
0.115
0.36
1.15
3.64
11.5
27