Table 206
Recommended separation distances between
portable and mobile RF communications equipment and the AES-U181
The AES-U181 is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the AES-U181 can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the AES-U181 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
Electrical fast
transient/burst
IEC 61000-4-4
150 kHz to 80 MHz
d =1
，
2
√
p
80 MHz to 800 MHz
d =1
，
2
√
p
800 MHz to 2,5 GHz
d =2
，
3
√
p
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
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 power rating of the transmitter in watts (W) according
to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for 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.
