Tabla de contenido
Publicidad
121
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 broad-
cast and TV broadcast cannot be predicted theoretically with accuracy.
To assess the electromagnetic environment due to fixed RF transmitters, and electro-
magnetic site survey should be considered. If the measured field strength in the loca-
tion 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 reorienting or relocating
this device.
b: Over the frequency range 150 kHz to 80 MHz, field strengths should be less than
3V/m.
Immunity
test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
IEC 60601
Compliance
test level
Level
3 Vrms
N/A
da 150 kHz
80 MHz
3 V/m
3 V/m
da 80 MHz
2,5
GHz
Electromagnetic environment
Portable and mobile RF communications
equipment should be used no closer to
any part of this device, including cables,
than the recommended separation dis-
tance calculated from the equation appli-
cable to the frequency of the transmitter..
Recommended separation distance
d= 1.2 √P
d= 1.2 √P 80MHz to 800MHz
d= 2.3 √P 800MHz to 2.5GHz
Where P is the maximum output power
rating of the transmitter in watts (W) ac-
cording 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 compli-
a
ance level in each frequency range.
Interference may occur in the
vicinity of equipment
marked with
the following symbol:
b
Publicidad
Tabla de contenido
