Recommended separation distances between portable
and mobile RF communications equipment and the
System
The System is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the System can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the System as recommended below, according to the maximum output power of
the communications equipment.
Rated maximum
output power of
transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to
80 MHz
80 MHz to
800 MHz
800 MHz to
2.5 GHz
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
=
1.2
d
=
1.2
d
=
2.3
d
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 metres (m).
Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey,
a
should
be less than the compliance level in each frequency range.
b
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 (mobile/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 System is used exceeds the applicable RF compliance level
above, the System should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the System.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
101
102
ART41600-101_rev-A_manual.indd 101-102
ART41600-101_rev-A_manual.indd 101-102
10/7/20 2:55 PM
10/7/20 2:55 PM