15
Recommended separation distances between portable and mobile RF communications equipment and the System 5
handpiece
The System 5 handpiece is intended for use in the electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the System 5 handpiece can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications equipment (transmitters) and the System 5 handpiece as
recommended below, according to the maximum output power of the communications equipment.
Rated maximum output power of
transmitter
W
0.01
0.1
1
10
100
150 kHz to 80 MHz
d = [ — ]√P
n/a
n/a
n/a
n/a
n/a
80 MHz to 800 MHz
d = [ — ]√P
0.12
0.37
1.17
3.70
11.70
800 MHz to 2.5 GHz
d = [ — ]√P
0.23
0.74
2.33
7.37
23.30
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 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 reflection
from structures, objects and people.
Separation distance according to frequency of transmitter
m
3.5
V
1
3.5
E
1
7
E
1
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