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6.3. Separation Distance
The SEM Scanner 200 is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the SEM Scanner 200 can help
prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the SEM Scanner 200 as recommended
below, according to the maximum output power of the communications equipment. The
recommended separation distance between portable and mobile RF communications equipment
and the SEM Scanner 200 is listed in Table 12.
Separation distance according to frequency of transmitter (meters)
Rated maximum
output power of
transmitter (W)
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in meters (m) can be estimated using the equation applicable to the frequency of the transmitter,
where P is the maximum output rating of the transmitter in watts (W) according to the transmitter
manufacturer.
NOTE: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects, and people.
150 kHz to 80 MHz
= 2 .
d
1
P
0.12
0.38
1.2
3.8
12
Table 12. Separation Distance
Page 34 of 36
80 MHz to 800 MHz
= 2 .
d
1
P
0.12
0.38
1.2
3.8
12
MULTI-LANG-0123 Rev D,
OTH-SEM-IFU-
ENGLISH (EU)
800 MHz to 2.7 GHz
=
d
2
3 .
P
0.23
0.73
2.3
7.3
23
January 2018
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