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Specifications
Recommended separation distances between portable and mobile RF communications equipment and the
Rated maximum
output power of
Transmitter
W
0.01
0.1
1
10
34
Ultiri™ Measurement System Operation Manual – 600327583 Rev. A
Recommended Separation Distances
The Ultiri Measurement System is intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled. The customer or
the user of the Ultiri Measurement System can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Ultiri Measurement System as
recommended below, according to the maximum output power of the
communications equipment.
Ultiri Measurement System
Separation distance according to frequency of Transmitter m
150 kHz to 80 MHz
d=1.2√P
0.12
0.38
1.2
3.8
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: At 80 MHz and 800 MHz, the separation distance for the higher frequency
range applies.
Note: These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects, and
people.
80 MHz to 800 MHz
d=1.2√P
0.12
0.38
1.2
3.8
800 MHz to 2.7 GHz
d=2.3√P
0.23
0.73
2.3
7.3
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