spirodoc
SPIRODOC
cod. 980156
Rev 2.4
EN 46/46
User manual
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
a) Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio
broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which the
SPIRODOC
is used exceeds the applicable RF
compliance level above, the
SPIRODOC
should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the
SPIRODOC
.
b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [3] V/m.
Recommended separation distances between
portable and mobile RF communications equipment and the
SPIRODOC
The
SPIRODOC
is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the
SPIRODOC
can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the
SPIRODOC
as recommended below, according to the maximum output power of the communications equipment.
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d=
[
3.5 ] √P
3
80 MHz to 800 MHz
d=
[
3.5 ] √P
3
800 MHz to 2,5 GHz
d=
[
7 ] √P
3
0.01
0.12
0.12
0.24
0.1
0.37
0.37
0.74
1
1.17
1.17
2.34
10
5.28
5.28
1.056
100
11.66
11.66
23.32
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d
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.
