General information
Puritan Bennett™ 700 Series Ventilator System Service Manual
10070389 Rev. A
1-13
Immunity test
IEC 60601-1-2 test level
Compliance level
Electromagnetic environment-
guidance
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)
b
.
Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey
c
, should be less than the
compliance level in each frequency range
d
.
Interference may occur in the vicinity of equipment marked with the following symbol:
NOTE:
•
At 80 MHz and 800 MHz, the higher frequency range applies.
•
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects, and people.
a
The ISM (industrial, scientific, and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567 MHz;
26.957 MHz to 27.283 MHz; and 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 80 MHz to 2.5 GHz are intended to
decrease the likelihood that mobile/portable communications equipment could cause interference if it is inadvertently brought into patient areas.
For this reason, an additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in these frequency ranges.
c
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 700 Series Ventilator
System is used exceeds the applicable RF compliance level above, the 700 Series Ventilator System should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the ventilator.
d
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
Table 1-4: Electromagnetic Immunity-conducted and radiated RF
7-00431A
Table 1-5: Recommended separation distances between portable and mobile RF communications equipment
and the 700 Series ventilator
The 700 Series Ventilator System is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the The 700 Series Ventilator System can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the ventilator as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum
output power of
transmitter (W)
150 kHz to 80 MHz
outside ISM bands
(m)
150 kHz to 80 MHz
in ISM bands
(m)
80 MHz to
800 MHz
(m)
800 MHz to
2.5 GHz
(m)
0.01
0.035
0.12
0.12
0.23
0.1
0.11
0.38
0.38
0.73
1
0.35
1.2
1.2
2.3
10
1.1
3.8
3.8
7.3
100
3.5
12
12
23
d
0.35
P
=
d
1.2
P
=
d
1.2
P
=
d
2.3
P
=
Summary of Contents for Puritan Bennett 700 Series
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