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Electromagnetic Compatibility
b - Over the frequency range of 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Note
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines may not apply to all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects, and people. If an electromagnetic interference is suspected, it is the
responsibility of the user to assess the electromagnetic environment in their location.
12.5
Recommended Separation Distances
The Polaris Vicra System is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the Polaris Vicra System can help
prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the Polaris Vicra System, as recommended
below according to the maximum output power of the communications equipment.
Rated maximum output power
of transmitter (watts)
0.01
0.1
1.0
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation
distance (d) in metres (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
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines may not apply to all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects, and people.
12.6
RF Emissions
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference and,
68
Table 12-5 Recommended Separation Distances
Separation distance according to frequency of transmitter (metres)
150kHz to 80MHz
P
3.5
------ -
d
=
3
0.117
0.369
1.17
3.69
11.67
80 MHz to 800 MHz
P
3.5
------ -
d
=
3
0.117
0.369
1.17
3.69
11.67
Polaris Vicra User Guide - Revision 2
800 MHz to 2.5 GHz
P
7
-- -
d
=
3
0.233
0.737
2.33
7.38
23.33
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