Advantech POC-W242 User Manual page 23

Recommended separation distances between
portable and mobile RF communications equipment and the model POC-W242
The model POC-W242 is intended for use in an electromagnetic environment in which radi-
ated RF disturbances are controlled. The customer or the user of the model POC-W242
can help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the model POC-
W242 as recommended below, according to the maximum output power of the communi-
cations equipment.
Rated maximum
output power of Separation distance according to frequency of transmitter
transmitter m
W
150 kHz to 80 MHz
d = 1,2
0,01 0,12
0,1 0,38
1 1,2
10 3,8
100 12
For transmitters rated at a maximum output power not listed above, the recommended sep-
aration distance d in metres (m) can be estimated using the equation applicable to the fre-
quency of the transmitter, where P is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range
applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
80 MHz to 800 MHz
d = 1,2
P P
0,12
0,38
1,2
3,8
12
13
800 MHz to 2,5 GHz
d = 2,3 P
0,23
0,73
2,3
7,3
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POC-W211C User Manual