APDM Opal V2R - RF Separation Distances

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Table A-4: Recommended separation distances between portable and mobile RF communications equipment and the Opal

System.

The Opal System is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The

customer or the user of the Opal System can help prevent electromagnetic interference by maintaining a minimum distance between

portable and mobile RF communications equipment (transmitters) and the Opal System as recommended below, according to the

maximum output power of the communications equipment.

Rated maximum output Separation distance (meters) according to frequency of transmitter

power (Watts) of

transmitter 150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz

d = 1.2√P d = 1.2√P d = 1.2√P

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

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 aected by absorption and reection

from structure, objects, and people.

Parts

Setup M.L. How to