User's Manual

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Radiated RF
IEC 61000-4-3
80 MHz to 2.7 GHz
10 V/m
peripherals such as antenna cables and external
antennas) should be used no closer than 30 cm (12
inches) to any part of the device).
Where “P” is the maximum output power rating of the
transmitter in watts according to transmitter
manufacturer and “d” is the recommended separation
distance in meters. Field strengths from fixed RF
transmitters, as determined by an electromagnetic site
survey (b), should be less than the compliance level in
each frequency range (c).
Interference may occur in the vicinity of equipment
marked with the following symbol:
Note1: At 80MHz and 800MHz, the higher frequency range applies.
Note2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
refection from structures, objects and people.
a) The ISM (industrial, scientific and medical) bands between 0.15 MHz and 80 MHz are 6.765 MHz to6.795 MHz;
13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.70 MHz. The amateur radio bands
between 0.15 MHz and 80 MHz are 1.8 MHz to 2.0 MHz, 3.5 MHz to 4.0 MHz, 5.3 MHz to 5.4 MHz, 7 MHz to 7.3
MHz, 10.1 MHz to 10.15 MHz, 14 MHz to 14.2 MHz, 18.07 MHz to 18.17 MHz,21.0 MHz to 21.4 MHz, 24.89 MHz
to 24.99 MHz, 28.0 MHz to 29.7 MHz and 50.0 MHz to 54.0 MHz.
b) 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 this is used exceeds the applicable RF compliance
level above, this should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating.
c) Field strengths should be less than 3V/m in the frequency range of 150k~80MHz.
Table 4 Test specifications for ENCLOSURE PORT IMMUNITY to RF wireless communications equipment
Test
frequency
(MHz)
Band
a)
(MHz)
Service
a)
Modulation
b)
Maximum
power
(W)
Distance
(m)
IMMUNITY
Test Level
(V/m)
385
380-390
TETRA 400
Pulse modulation
b)
18 Hz
1.8
0.3
27
450
430-470
GMRS 460.
FRS 460
FM
c)
± 5kHz deviation
1 kHz sine
2
0.3
28
710
704-787
LTE Band 13,
17
Pulse modulation
b)
217 Hz
0.2
0.3
9
745