14
conduction
IEC61000-4-6
RF radiation
IEC61000-4-3
150 kHz~80 MHz
3 V/m
80 MHz~2.5 GHz
applicable
3 V/m
Recommended separation distance
d =
P
2
.
1
d =
P
2
.
1
80 MHz~800 MHz
d =
P
3
.
2
800 MHz~2.5 GHz
where:
P
—The maximum rated output power of
the transmitter in watts (W) according to
the transmitter's manufacturer;
d—The
recommended
separation
distance in m b.
Field
strengths
from
fixed
RF
transmitters, as determined by an
electromagnetic site survey c, should be
less than the compliance level in each
frequency range d.
Interference may occur in the vicinity of
equipment marked with the following
symbols.
Note 1: At 80 MHz and 800 MHz, the formula used for higher frequency range applies.
Note 2: These guidances may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and human bodies.
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 of
fixed RF transmitters, an electromagnetic site survey shall be considered. If the measured field
strength in the location in which the IR-EFT ThermArt is used exceeds the applicable RF
compliance level above, the IR-EFT ThermArt should be observed to verify normal operation.
If abnormal performance is observed, additional measures may be necessary, such as re-orienting
or relocating the IR-EFT Infrared Forehead and Ear Thermometer.
Within the frequency range from 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Table 4: Recommended Safe Distance
Recommended separation distance between portable and mobile RF communication
equipment and the IR-EFT Infrared Forehead and Ear Thermometer
IR-EFT ThermArt is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The buyer or user can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF