DreamStar Duo, DuoST
Technical characteristics
47
Electromagnetic Immunity
(continued)
°
Magnetic fields in the
Power
Supply
Frequencies
(50/60 Hz)
IEC 61000-4-8
3 A/m
3 A/m
Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.
Note:
U
T
is the AC mains voltage prior to application of the test level
Electromagnetic Immunity - conducted and radiated RF
DreamStar™ product range devices are intended for use in the electromagnetic environment specified
below. The customer or the user of the device from DreamStar™ product range should assure that it is
used in such an environment.
Immunity test
IEC 60601
test level
Compliance level
Recommended electromagnetic environment
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to
80 MHz
3 Vrms
150 kHz to
80 MHz
Portable and mobile RF communications
equipment should not be used in proximity to
any part of the device from the DreamStar™
product range, including cables.
Recommended separation distance:
d = 1.2√P
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/m
d = 1.2√P 80 MHz to 800 MHz
d = 2.3√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).
Fields strengths from fixed RF transmitters, 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 highest 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.
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 a device from DreamStar™
product range is used exceeds the applicable RF compliance level above, the device from DreamStar™ product
range should be observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as reorienting or relocating the device from DreamStar™ product range.
(b)
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V / m.
