䕔
7-6
Recommended separation distances between
portable and mobile RF communications equipment and the
EM-4000
The EM-4000 is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the EM-4000 can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and the EM-4000 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
d =1.2
80 MHz to 800 MHz
d =1.2
800 MHz to 2.5 GHz
d =2.3
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 80MHz and 800MHz, 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 refl ection from structures, objects and people.
Table 206
To Next Page
Loading...
Need help?
General