Topcon IS-5500 - Page 19

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Recommended separation distances between portable and mobile RF communications equipment and
the IS-5500
The IS-5500 is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the IS-5500 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the IS-5500 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 =
󰇣
,


󰇤


80 MHz to 800 MHz
d =
󰇣
,


󰇤


800 MHz to 2,5 GHz
d =
󰇣



󰇤


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.