Technical specifications
Electromagnetic compatibility (EMC)
56
GA 5752 2300 GB 26
8
8.7.4
Recommended separation distances
The following is a table showing the recommended separation distance between portable and
mobile RF telecommunication equipment and the product.
The product is engineered for use in an electromagnetic environment in which RF interference is
monitored and controlled. The customer or user of the product can prevent electromagnetic
interference by maintaining the minimum distance between portable and mobile RF
telecommunication devices (transmitters) and the product as specified below, in accordance with
the maximum output power of the communication equipment.
Transmitter rated
power [W]
Separation distance as per transmission frequency [m]
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.5 GHz
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
When dealing with transmitters for which no rated output is indicated in the table above, the dis-
tance can be ascertained, using the equation associated with the appropriate column, where P
is the transmitter's maximum rated power in watts (W) as specified by the manufacturer of the
transmitter.
Notes:
At 80 MHz and 800 MHz the higher frequency range is applicable. The ISM frequency bands
(for industrial, scientific and medical applications) between 150 kHz and 80 MHz are 6.765 MHz
to 6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz and 40.66 MHz to 40.70
MHz. The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in
the 80 MHz and 2.5 GHz frequency range are intended to reduce the possibility that mobile /
portable communication equipment is able to cause interference if it is inadvertently taken into
the patient area. For this reason the additional factor of 10/3 was introduced in calculating the
recommended separation distance in these frequency ranges. These guidelines may not be
applicable in all situations. The propagation of electromagnetic emissions will be affected by the
absorptive and reflective properties of the buildings, objects and persons.
Tab. 11:
Recommended separation distances
