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12.0
NOTE 1
With 80 MHz and 800 MHz the higher frequency range applies.
NOTE 2
These guidelines are not like to be applicable in any case. The propagation of electromangetic sizes is
infl uenced by absorptions and refl ections of buildings, objects and people.
a
The fi eld strength of stationary transmitters, such as base stations of cellular phones and mobile terrain radio
equipment, amateur radio transmitters, cbm broadcast and TV stations cannot be predestined exactly.
To determine the electromagnetic environment in regard to stationary transmitters, a study of the location is to
be considered. If the measured fi eld strength at the location where the AtmoSafe is used exceeds the above
compliance level, the AtmoSafe is to be observed to verify the intended use. If abnormal performance cha-
racteristics are noted, additional measures might be necessary, e.g. a changed arrangement or another loca-
tion for the device.
b
Within the frequency range of 150 kHz to 80 MHz the fi eld strength is to be below 3 V/m.
12.4 Recommended separations between portable and mobile RF communications
equipment and the AtmoSafe
The AtmoSafe is intended for use in electromagnetic environment in which ratiated disturbances are controlled.
The customer or user of the AtmoSafe can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment and the AtmoSafe as recommended
below, according to the maximum output power of the communications equipment.
Nominal output of the
transmitter
0.01
100
For transmitters for which the maximum nominal output is not indicated in the above table, the recommended
separation distance d in meters (m) can be determined using the equation belonging to the respective column
whereas P is the maximum nominal output of the transmitter in watts (W) acc. to manufacturer´s specifi cation.
NOTE 1 With 80 MHz and 800 MHz the higher frequency range applies.
NOTE 2 These guidelines are not applicable in any case. The propagation of electromagnetic sizes is
infl uenced by absorptions and refl ections of buildings, objects and people.
Separation distance, depending on transmit-frequency m
150 kHz to 80 MHz
d = [ 3.5 / 3] √P
W
0.1
1
10
80 MHz to 800 MHz
d = [ 3.5 / 3] √P
0.12
0.37
1.2
3.69
11.66
800 MHz to 2,5 GHz
d = [ 7.0 / 3] √P
0.12
0.37
1.2
3.69
11.66
0.24
0.74
2.4
7.38
23.32
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