Elo TouchSystems 1519LM User Manual page 12

Recommended separation distance between portable and mobile
RF communications equipment and the ET1519/1919LM
for all EQUIPMENT AND SYSTEMS that are not LIFE-SUPPORTING
Recommended separation distances between portable
and mobile RF communications equipment and the ET1519/1919LM
The ET1519/1919LM is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the ET1519/1919LM can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications (equipment)
and the ET1519/1919LM as recommended below according to the maximum output power of the
communications equipment.
Rated maximum output
power of transmitter
W
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distanced in
metres(m) can be estimated using the equation applicable to the frequency 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.
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
d=1.2 P
0.12
0.37
1.2
3.7
12
80MHz to 800 MHz
d=1.2 P
0.12
0.37
1.2
3.7
12
xii
800 MHz to 2.5 GHz
d=2.3 P
0.23
0.74
2.3
7.4
23