Specifications
54 Affinity® 4 Birthing Bed Instructions for Use (USR025 REV 13)
Recommended Separation Distances between Portable and Mobile RF Communications Equipment and the
P3700 Affinity® 4 Birthing Bed
The P3700 Affinity® 4 Birthing Bed is intended for use in an electromagnetic environment in which radiated RF distur-
bances are controlled. The customer or the user of the P3700 can help prevent electromagnetic interference by main-
taining a minimum distance between portable and mobile RF communications equipment (transmitters) and the
P3700 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 = 1.2√ 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 separation distance d in
meters (m) can be estimated using the equation applicable to the frequency of the transmitter, where P is the maxi-
mum 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.
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