Datex-Ohmeda Aespire View, User'S Reference Manual

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Aespire View
10-28
M1132382
Radiated immunity
Immunity test IEC 60601-1-2 test Level Compliance level
Electromagnetic
environment guidance
Recommended separation
distance
Portable and mobile RF
communications equipment
should be used no closer to
any part of the system,
including cables, than the
recommended separation
distance calculated from the
equation appropriate for the
frequency of the transmitter.
Conducted RF
IEC 61000-4-6 3 Vrms
150 kHz to 80 MHz outside
ISM bands 3 Vrms (V1) D=3.5
√
P
10 Vrms
150 kHz to 80 MHz in ISM
bands 10 Vrms (V2) D=12
√
P
Radiated RF
IEC 61000-4-6 10 V/m 10 V/m (E1) D=1.2
√
P 80 mHz to 800 mHz
80 MHz to 2.5 GHz D=3.5
√
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 determined by
an electromagnetic site survey,
should be less than the
compliance level in each
frequency range.
• 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.
• 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 a portable communications device 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.
• 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 system is used exceeds the applicable RF compliance level above, the
system should be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the system.
• Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 1 V/m.
Note: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection
from structures, objects, and people.