Instruction Manual

Forehead Sleep Recorder File No. DMR-SM902-4-25 Ver:A0
21 / 23 Copyright© Shenzhen BrainScience Bio-Info Technology Co., LTD
Table 9- Guidance and manufacturer's declaration - Electromagnetic immunity
The forehead sleep recorder is intended use in the electromagnetic environment specified below,
the consumer or user of the device should assure that it is used in such an electromagnetic
environment.
IMMUNITY test
IEC60601 TEST
LEVEL
Compliance
level
Electromagnetic environment - guidance
Radio frequency
conduction
IEC 61000-4-6
3V/m Effective value
150kHz~80MHz
Not
applicable
Portable and mobile RF
communications equipment should not
be closer to any part of the frontal sleep
recorder than the recommended
isolation distance. This distance should
be calculated by the formula
corresponding to the frequency of the
transmitter.
)z5.2~800(32
)800~80(21
21
GHMHzp.d
MHzMHzp.d
p.d
=
=
=
In the formula:
P -- According to the transmitter's
maximum rated output power provided
by the transmitter manufacturer, in
watts (w)；
d -- Recommended isolation distance in
meters (m).
The field strength of the fixed RF
transmitter is determined by surveying
the electromagnetic field a, in each
frequency range.
b Both should be lower than the
compliance level.
Interference may occur near the
equipment marked with the following
symbol:
Radio frequency
radiation
IEC 61000-4-3
3V/m
80MHz~2.5GHz
3V/m
Note1: At 80MHz and 800MHz, use the higher frequency band formula
Note2: These guidelines may not be suitable for all situations, and electromagnetic propagation is
affected by absorption and reflection from buildings, objects and Population.
a) The field strength of fixed transmitters, such as: wireless (cellular / cordless) telephones and
base stations for ground mobile radios, amateur radios, AM and FM radio broadcasts, cannot
be accurately predicted theoretically.
b) To assess the electromagnetic environment of fixed RF transmitters, surveys of