Programmer's Manual

106 English Programmer Model 2740
Table 8-7. Recommended Separation Distances between Portable and Mobile RF Communications Equipment
and the Model 2740 Inspire Programmer
The Model 2740 Inspire Programmer is intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user of the programmer can
help prevent electromagnetic interference by maintaining a minimum distance between portable
and mobile RF communications equipment (transmitters) and the programmer 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 80 MHz to 800 MHz 800 MHz to 2.5 GHz
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.
d 1.2 P= d 1.2 P= d 2.3 P=