20
Conducted RF
IEC 61000-4-6
150 kHz to
80 MHz:
3 Vrms
6Vrms (in ISM
and amateur
radio bands)
80% Am at 1kHz
150 kHz to
80 MHz:
3 Vrms
6Vrms (in ISM
and amateur
radio bands)
80% Am at
1kHz
Portable and mobile RF communica-
tions equipment should be used no
closer to any part of the device, includ-
ing cables, than the recommended
separation distance calculated from the
equation appropriate for the frequency
of the transmitter.
Recommended separation distances:
d=0.35
P
;
d=1.2
P
Radiated RF
IEC 61000-4-3
10V/m, 80% Am
at 1kHz
10V/m, 80%
Am
at 1kHz
80 MHz to
800 MHz:
d=1.2
P
800 MHz
to 2.7
GHz:
d=2.3
P
where, P is the maximum
output power rating of the
transmitter in watts (W)
according to the transmit-
ter manufacturer, d is the
recommended separation
distance in meters (m).
Field strengths from
fixed RF transmitters, as
determined by an elec-
tromagnetic 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:
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.
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 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.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
Table 4
Recommended separation distances between portable and mobile RF
communications equipment and the device.
The device is intended for use in an electromagnetic environment in which radiated RF distur-
bances 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 (transmittters) and the device as recommended below, according to the maximum
output power of the communications equipment.