mectron COMPACT PIEZO LED Use And Maintenance Manual page 25

Recommended separation distances between portable and mobile RF
communications equipment and the compact piezo LED
The compact piezo LED is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or user of the compact piezo LED can
help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile FR communications equipment (transmitters) and the compact
piezo LED as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum
output power
from 150 kHz to 80 MHz
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.
Separation distance according to the frequency of transmitter 'm'
from 80 MHz to 800 MHz
d = 1,2 √P
0,12
0,38
1,2
3,8
12
09 Û TECHNICAL DATA
from 800 MHz to 2,5 GHz
d = 1,2 √P
0,12
0,38
1,2
3,8
12
EN
d = 2,3 √P
0,23
0,73
2,3
7,3
23
25