BMC G3 A20 - Page 51

Auto CPAP / CPAP System User Manual V1.0
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Guidance and manufacturer's declaration - electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below. The
user of the device should make sure that it is used in such an environment.
Immunity
Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic
Environment - Guidance
Conducted RF
IEC
61000-4-6
Radiated RF
IEC
61000-4-3
3 V
0.15 MHz ～
80 MHz
6 V in ISM and
amateur radio
bands between
0.15 MHz and
80 MHz
10 V/m
80 MHz to 2.7
GHz
3 V
0.15 MHz ～
80 MHz
6 V in ISM and
amateur radio
bands between
0.15 MHz and
80 MHz
10 V/m
80 MHz to 2.7
GHz
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
pd 17.1
pd 35.0
80 MHz to 800 MHz
pd 70.0
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
transmitter, as determined 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:
Note 1: At 80 MHz and 800 MHz, the higher frequency range applied.
Note 2: 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 re-orienting or relocating the device.
b
Over the frequency range 150 kHz to 80 MHz, the field strengths should be less than 10
V/m.