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Mobile 2 RPW User Manual
7. Technical Specifications of the Control Device
Recommended safety distances between portable and mobile HF communications equipment and the device
The device is intended for use in an electromagnetic environment in which radiated HF disturbances are controlled. The customer
or the user of the device can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile HF communications equipment (transmitters) and the device as recommended below,
according to the maximum output power of the communications equipment.
Rated power
of transmitter [W]
Safety 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 = 2.3√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 safety distance can be estimated
using the equation applicable to the frequency of the transmitter, where P is the rated power of the transmitter in watts [W]
according to the transmitter manufacturer.
NOTE 1
An additional factor of 10/3 was used for calculating the recommended safety distance of transmitters in the frequency range
from 80 MHz to 2.5 GHz in order to reduce the probability that a mobile/portable communications device brought into the
patient area inadvertently might lead to a malfunction.
NOTE 2
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
