User's Manual

6
Recommended separation distances between portable and mobile RF communications equipment and the CareLink USB
This section provides information on the recommended separation distance between portable and mobile RF communications equipment and the CareLink USB. The
CareLink USB is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the CareLink USB users can help
prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the CareLink
USB as recommended below, according to the maximum output power of the communications equipment.
Rated maximum output power of
transmitter (W)
Separation distance according to the frequency of transmitter (m)
150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 6 GHz
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.74
1 1.2 1.2 2.3
10 3.8 3.8 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: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption, and reflection from structures, objects and people.
d 1.2 P= d 1.2 P= d 2.3 P=