Instruction manual

194
Recommended separation distances between portable and
mobile RF communications equipment and the Tono-Pen
 e
Tono-Pen® XL
is intended for use in the electromagnetic environment in which radi-
ated RF disturbances are controlled.  e customer or the user of the
Tono-Pen® XL
can
help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the Tono-Pen as
recommended below, according to the maximum output power of the communications
equipment.
Rated maximum power of
transmitter
W
Separation distance according to frequency of transmitter
(meters)
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 separa-
tion 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  ese guidelines may not apply in all situations. Electromagnetic propagation is
aff ected by absorption and refl ection from structures, objects and people.