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IFU |
Alarm unit, Fiber optic cable & Sensor patch |
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Guidance and manufacturer’s declaration – electromagnetic immunity
NOTE 1 At 80MHz and 800MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflected 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 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 Redsense is used exceeds the applicable RF compliance level above, Redsense
should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating
Redsense.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
Recommended separation distances between portable an mobile RF communications equipment and Redsense
Redsense is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.
The customer or the user of Redsense can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and Redsense as recom-
mended below, according to the maximum output power of the communications equipment.
For transmitters rated at a maximum output power not listed above, the recommended separation distance 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 manu-
facturer.
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.
Rated maximum output
power of
transmitter W
0.01
0.1
1 1
0
100
Separation distance according to frequency of transmitter m
150 kHz to 80 MHz
0.12
0.38
1.2
3.8
12
80 MHz to 800 MHz
0.12
0.38
1.2
3.8
12
800 MHz to 2.5 GHz
0.24
0.73
2.3
7.3
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