DotFit Exerspy Посібник користувача - Сторінка 17
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Також для DotFit Exerspy: Посібник користувача (20 сторінок)
Друкувати сторінкуField 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, and electromagnetic site survey should be considered. If the measured
field strength in the location in which the display is used exceeds the applicable RF compliance
level above, the display should be observed to verify normal operation. If abnormal performance
is observed, additional measures may be necessary, such as re-orienting or relocating the Display.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended Separation Distances for the Display
The Display is intended for use in the electromagnetic environment in which radiated disturbances
are controlled. The customer or user of the Display can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF Communications Equipment and
the Display as recommended below, according to the maximum output power of the
communications equipment.
Max Output
Separation (m)
Power (Watts)
150kHz to 80MHz
D=(3.5/V1)(Sqrt P)
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended
separation distance in meters (m) can be determined 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.
User Guide
Separation (m)
80 to 800MHz
D=(3.5/V1)(Sqrt P)
0.1166
0.3689
1.1666
3.6893
11.6666
Separation (m)
800MHz to 2.5GHz
D=(7/E1)(Sqrt P)
0.1166
0.3689
1.1666
3.6893
11.6666
0.2333
0.7378
2.3333
7.3786
23.3333
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