Hillrom Welch Allyn Manuel De L'utilisateur page 83

Manuel de l'utilisateur
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile
radios, amateur radios, 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 equipment is used exceeds the applicable RF
compliance level above, the equipment should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as reorienting or relocating the equipment.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [3] V/m.
Recommended separation distances between portable and mobile RF communications
equipment and the equipment
The equipment is intended for use in the electromagnetic environment in which radiated RF disturbances are controlled.
The customer or the user of the equipment can help to prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and the equipment as recommended
in the table below, according to the maximum output power of the communications equipment.
Guidance and Manufacturer's Declaration: Electromagnetic Immunity
3 Vrms 3 Vrms
150 kHz to 150 kHz to
80 MHz 80 MHz
3 V/m 80 MHz to 2.5 3 V/m 80 MHz to 2.5
GHz GHz
Annexe B : Compatibilité électromagnétique (CEM) 79
Portable and mobile RF communications
equipment should be used no closer to any part
of the equipment, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency
of the transmitter.
Recommended separation distance
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
Interference may occur in the vicinity of
equipment marked with the following symbol:
80 MHz to 800 MHz
800 MHz to 2.5 GHz
a
,
b
.