Vatech GREEN SMART, Руководство пользователя

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15. Appendices
172 Green Smart User Manual
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 where the PHT-35LHS is used exceeds the applicable RF compliance
level above, the PHT-35LHS should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as
re-orienting or relocating the
PHT-35LHS
.
b Over the frequency range 150kHz to 80MHz, field strengths should be less than
[V
1
] V/m.
Recommended separation distances between portable and mobile RF
communications equipment and the
PHT-35LHS
This is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the PHT-35LHS can help
Prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the PHT-
35LHS as recommended below, according to the maximum output power of the
communications equipment.
Separation distance according to the frequency of transmitter [m]
IEC 60601-1-2
Frequency of
Transmitter
Equation
The rated
maximum output
power of the
transmitter
[W]
150kHz to 80MHz
V
1
=3Vrms
Separation
Distance (meters)
80MHz to 800MHz
E
1
=3V/m
Separation
Distance (meters)
800MHz to 2.5GHz
E
1
=3V/m
Separation
Distance (meters)
0.01 0.116 0.1166 0.2333
0.1 0.368 0.3687 0.7378
1 1.166 1.1660 2.3333
10 3.687 3.6872 7.3785
100 11.660 11.6600 23.333
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.