Mectron MULTIPIEZO Manual De Uso página 43

MULTIPIEZO
Recommended separation distances between portable and mobile RF
The multipiezo is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or user of the multipiezo can help prevent
electromagnetic interference by maintaining a minimum distance between portable and
EN
mobile FR communications equipment (transmitters) and the multipiezo 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 distance d in metres (m) can be calculated 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.
N.B.:
(1) at 80 MHz and 800 MHz, the higher frequency range applies.
(2) These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
42
communications equipment and the multipezo
Separation distance according to the frequency of transmitter 'm'
from 150 kHz to 80 MHz
d = 1,2 √P
0,12
0,38
1,2
3,8
12
from 80 MHz to 800 MHz
d = 1,2 √P
0,12
0,38
1,2
3,8
12
from 800 MHz to 2,5 GHz
d = 2,3 √P
0,23
0,73
2,3
7,3
23