Stryker AHTO Manual De Utilización Y Mantenimiento página 22

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  • ESPAÑOL, página 51
(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 AHTO Irrigation Pump system is used exceeds the applicable
RF compliance level above, the AHTO Irrigation Pump system should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the AHTO Irrigation Pump unit.
(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
The AHTO Irrigation Pump is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The user of the AHTO Irrigation Pump can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and the AHTO Irrigation Pump as recommended
below, according to the maximum output power of the communications equipment.
Rated maximum output
power (W) of transmitter
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation
distance (d) in meters (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.
18
Equipment and the AHTO Irrigation Pump
Separation distance (m) according to frequency of transmitter
150 kHz to 80
MHz
d
=
1.17 P
0.12
0.37
1.17
3.70
11.70
80 MHz to 800
MHz
d
=
1.17 P
0.12
0.37
1.17
3.70
11.70
800 MHz to 2.5
GHz
d
=
2.33 P
0.23
0.74
2.33
7.37
23.30
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