VS 8/VS 8A Vital Signs Monitor Operator’s Manual B - 5
Guidance and Declaration – Electromagnetic Immunity
The device is intended for use in the specified electromagnetic environment. The customer
or the user of the device should assure that it is used in such an environment as described
below.
Immunity
test
IEC60601
test level
Complia
nce level
Electromagnetic environment – guidance
Conducted
disturbanc
es induced
by RF fields
IEC61000-
4-6
3 Vrms
150 kHz to 80
MHz
3 Vrms 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:
150k to 80 MHz
80 MHz to 80 0MHz
800 MHz to 2.7GHz
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
b
, should be less than the compliance
level in each frequency range
c
.
Interference may occur in the vicinity of
equipment marked with the following
symbol:
6 Vrms
in ISM bands
and amateur
radio bands
a
between
0,15 MHz
and 80 MHz
6 Vrms
Radiated
RF EM
fields
IEC61000-
4-3
3 V/m
80 MHz to 2.7
GHz
3 V/m
Proximity
fields from
RF wireless
communic
ations
equipment
IEC61000-
4-3
27 V/m
380–390
MHz
27 V/m
28 V/m
430–470
MHz, 800–
960 MHz,
1700–1990
MHz, 2400–
2570 MHz
28 V/m
9 V/m
704–787
MHz, 5100–
5800 MHz
9 V/m
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
• The device is configured with a wireless network connector to receive
wireless signal. Other devices may interfere with this device even though
they meet the requirements of CISPR.
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. The amateur radio bands between 0,15 MHz and 80 MHz are 1,8 MHz to 2,0
MHz, 3,5 MHz to 4,0 MHz, 5,3 MHz to 5,4 MHz, 7 MHz to 7,3 MHz, 10,1 MHz to 10,15 MHz, 14
MHz to 14,2 MHz, 18,07 MHz to 18,17 MHz, 21,0 MHz to 21,4 MHz, 24,89 MHz to 24,99 MHz,
28,0 MHz to 29,7 MHz and 50,0 MHz to 54,0 MHz.
b
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.
c
Over the frequency ranges 150 kHz to 80 MHz, field strengths should be less than 3V/m.
Recommended Separation Distances between Portable and Mobile RF
Communications Equipment and This Equipment
The equipment is intended for use in an electromagnetic environment in which radiated RF
disturbance are controlled. The customer or the user of the device can help prevent
electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the device as recommended
below, according to the maximum output power of the communication equipment.
Rated Maximum
Output power of
Transmitter Watts
(W)
Separation Distance According to Frequency of Transmitter
(m)
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.7 GHz
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
1 1.2 1.2 2.3
10 3.8 3.8 7.3
100 121223
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