Electromagnetic
compatibility
59
EN 20_070_0009I v1.5
Table 4: Recommended separation distances between portable and mobile RF
telecommunications equipment and non-life-sustaining equipment
The device or system is intended for use in an electromagnetic environment in which controlled RF radiation
disturbances occur. The customer or user of the device may help to prevent electromagnetic inference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and
the device according to the following recommendations and maximum output power of the communication
devices.
Maximum
output power
of the
transmitter
W
Separation distance according to the transmitter frequency [m]
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz bis 2.5 GHz
0.01
0.2
0.2
0.4
0.1
0.4
0.4
0.8
1
1.2
1.2
2.4
10
3.7
3.7
7.4
100
11.7
11.7
23.4
For transmitters with maximum output power rating not specified above, the recommended separation distance
d in meters (m) can be determined using the transmitter's equation, where P is the transmitter's maximum output
power rating in watts (W) according to the transmitter producer.
NOTE 1: At 80 MHz and 800 MHz, the separation distance applies to the higher frequency range.
NOTE 2: The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795
MHz; 13.553 MHz to 13,567; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.70 MHz.
NOTE 3: An add-on factor of 3 is used to calculate the recommended separation distance for transmitters in the
ISM frequency bands between 150 kHz and 80 MHz and in the frequency range of 80 MHz to 2.5 GHz, to limit
the likelihood that mobile/portable communication devices can create interference, if they are inadvertently
brought into the vicinity of patients.
NOTE 4: These guidelines may not apply in all conditions. Electromagnetic propagation is affected by absorption
and reflection of buildings, objects and people.
