User's Manual

Radius-7 Chapter 7- Specifications
www.masimo.com 77 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 = 1.17*Sqrt (P)
800 MHz to 2.5GHz
d = 2.33*Sqrt (P)
0.01 0.12 0.12 0.23
0.1 0.37 0.37 0.74
1 1.17 1.17 2.33
10 3.7 3.7 7.37
100 11.7 11.7 23.3
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.