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M118000-01-210305-Rev002-UM-en
Recommended separation distances between portable and mobile HF communications equipment and the PRODUCT
The PRODUCT is intended for operation in an electromagnetic environment in which HF radiated disturbances are
monitored. The customer or user of the PRODUCT can help prevent electromagnetic interferences by maintaining
minimum distances between portable and mobile HF communications equipment (transmitters) and the PRODUCT as
recommended below, according to the maximum output power of the communications equipment.
Nominal power of the
transmitter (W)
Separation distance according to transmitter frequency (m)
150 KHz to 80 MHz
= . √
80 MHz to 800 MHz
= , √
800 MHz to 2.7 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
F For transmitters whose maximum output power is not listed in the table above, the distance can be determined using
the equation specified in the respective column, where P is the maximum output power of the transmitter in watts (W)
according to the transmitter manufacturer's specification.
COMMENT 1
An additional factor of 10/3 has been used to determine the recommended separation distance of
transmitters in the frequency range of 80 MHz to 2.7 GHz in order to reduce the likelihood that a
mobile/portable communication device placed inadvertently in the patient area will result in
interference.
COMMENT 2
This guidance may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.
