Rad-97
Chapter 11: Specifications
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161
Masimo
Recommended Separation Distances
Recommended Separation Distance Between Portable and Mobile RF Communication
Equipment and the ME Equipment
The ME Equipment is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the ME Equipment can help
prevent electromagnetic interference by maintaining a minimum distance between portable
and mobile RF communications equipment (transmitters) and the ME Equipment as
recommended below, according to the maximum output power of the communication
equipment.
Rated maximum output power
of transmitter (W)
Separation Distance According to Frequency of
Transmitter (m)
150 K Hz to 80
MHz
d = 1.17*Sqrt (P)
80 MHz to 800
MHz
d = 0.18*Sqrt (P)
800 MHz to
2.5GHz
d = 0.35*Sqrt (P)
0.01
0.12
0.018
0.035
0.1
0.37
0.057
0.11
1
1.17
0.18
0.35
10
3.7
0.57
1.1
100
11.7
1.8
3.5
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 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.
