Hill-Rom® P500 Therapy Surface User Manual (158251 REV 3)
43
Recommended separation distances between portable and mobile RF communications
equipment and the P500
The P500 is intended for use in an electromagnetic environment in which radiated RF distur-
bances are controlled. The customer or the user of the P500 can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communi-
cations equipment (transmitters) and the P500 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
d = 1.2
P
80 MHz to 800
MHz
d = 1.2
P
800 MHz to 2.5
GHz
d = 2.33
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 sepa-
ration distance
d
in metres (m) can be estimated using the equation applicable to the fre-
quency 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.
