VIDAR CAD PRO Advantage, Installation And Operation Manual

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Recommended separation distances between portable and mobile RF
communications equipment and the Digitizer
Table 206
The Digitizer is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the Digitizer can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the Digitizer as recommended below, according to the maximum output power of the communications
equipment.
Separation distance according to frequency of transmitter, m
Rated maximum output
power of transmitter
80 MHz to 800 MHz 800 MHz to 2.5 GHz 150 kHz to 80 MHz
W
P d 2 . 1
=
P d 2 . 1
=
P d 3 . 2
=
0.01 0.12 0.12 0.23
0.1 0.37 0.37 0.74
1 1.2 1.2 2.3
10 3.7 3.7 7.4
100 12 12 23
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.
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.
VIDAR Advantage Series Installation and Operation Guide