Erbe VIO 300 D, User Manual

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12 • Information on electromagnetic compatibility (EMC)
50
/ 54
8
0113-90
1
08
.1
1
P is the maximum output power
rating of the transmitter in watts
(W) according to the transmitter
manufacturer.
d is the recom-
mended separation distance in
meters (m).
Field strengths from fixed trans-
mitters, as determined by an
electromagnetic site survey
a)
should be less than the compli-
ance level in each frequency
range
b)
.
Interference may occur in the
vicinity of equipment marked
with the following symbol:
Note 1: At 80 MHz equation 2) applies. At 800 MHz equation 3) applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflec-
tion 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 theoretically with accuracy. To
assess the electromagnetic environment due to fixed HF transmitters, an electromagnetic site survey should be considered.
If the measured field strength in the location in which the equipment is used exceeds the applicable compliance level
above, the equipment should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the equipment.
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 HF communications equipment and
the equipment
The equipment is intended for use in an electromagnetic environment in which radiated HF disturbances are controlled.
The customer or the user of the equipment can help prevent electromagnetic interference. This can be achieved by main-
taining the minimum distance recommended below between the communications equipment (transmitters) and the equip-
ment. The minimum distance depends on the maximum output power and the frequency of the communications
equipment.
Rated maximum output
power of transmitter (W) Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz
d=1.2P
1/2
80 kHz to 800 MHz
d=1.2 P
1/2
800 MHz to 2.5 GHz
d=2.3 P
1/2
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
1 1.2 1.2 2.3
10 3.8 3.8 7.3
Guidance and manufacturer's declaration - electromagnetic immunity