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PHYSIO-PORT / PHYSIO-PORT AS
A8136 Revision A
Electromagnetic Compatibility (EMC)
Recommended separation distances between portable and mobile RF communications equipment and
the PHYSIO-PORT devices
The PHYSIO-PORT devices are intended for use in the electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the PHYSIO-PORT devices can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the PHYSIO-PORT devices 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 = 1.17
√P
80 MHz to 800 MHz
d = 1.17
√P
800 MHz to 2.5 GHz
d = 2.33
√P
0.01
0.12
0.12
0.24
0.1
0.37
0.37
0.74
1
1.17
1.17
2.34
10
3.69
3.69
7.38
100
11.67
11.67
23.34
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 instances. Electromagnetic propagation is affected by absorption and reflec-
tion from structures, objects and people.
