Enraf Nonius Endopuls 811 Manual Del Usuario página 66

a
Theoretically, it is not possible to exactly predict the field strengths of fixed transmitters such as
base stations for radio telephones and land mobile radios, amateur radio stations, AM and FM radio and
TV broadcasting. To determine the electromagnetic environment in relation to the fixed transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location where
the Endopuls 811 device is to be used exceeds the above compliance levels, the Endopuls 811 device
should be monitored in order to ensure that it is functioning as intended. If unusual features are noticed,
additional measures may be necessary such as re-orienting or relocating the Endopuls 811 device.
b
Above the frequency range from 150 kHz to 80 MHz the field strength should be less than 3 V/m.
Recommended separation distances between portable and mobile RF telecommunications
equipment and the Endopuls 811 device
The Endopuls 811 device is intended for operation in an electromagnetic environment where RF
disturbances are monitored. The customer or user of the Endopuls 811 device can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
telecommunications equipment (transmitters) and the Endopuls 811 device – according to the output
power of the communications device, as indicated below.
Rated output of transmitter
0.01
0.1
1
10
100
For transmitters rated at a maximum output which is not listed above, the recommended separation distance d in
meters (m) can be determined using the equation applicable to the respective column, whereby P is the maximum
rated output of the transmitter in Watts (W) according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz the higher frequency range is applicable.
NOTE 2 These guidelines may not be applicable in all cases. Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.
64
W
150 kHz to 80 MHz
d= 1.2 √P
0.12
0.38
1.2
3.8
12
Separation distance according to frequency of transmitter
80 MHz to 800 MHz
d= 0.35 √P
0.035
0.11
0.35
1.1
3.5
m
800 MHz to 2.5 GHz
d= 0.7 √P
0.07
0.22
0.70
2.2
7