Recommended Separation Distances - Fresenius Medical Care Liberty Select User Manual

Recommended separation distances between
portable and mobile RF communications equipment and the Liberty Cycler
The Liberty Cycler is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the Liberty Cycler can help
prevent electromagnetic interference by maintaining a minimum distance between portable
and mobile RF communications equipment (transmitters) and the Liberty Cycler 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
10
100
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
applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects, and people.
Caution: In order to prevent potentially hazardous conditions
and ensure the safe operation of the Liberty Select Cycler, Radio
Frequency Identification (RFID) Equipment must be kept at least
3 meters from the system while in operation.
Liberty Select Cycler User's Guide
Separation distance according to frequency of transmitter
150 kHz to
80 MHz
d = 1.2 P
0.12
0.38
1.2
3.8
12
(meters)
80 MHz to 800 MHz to
800 MHz 2.5 GHz
d = 1.2 P d = 2.3 P
0.12
0.38
1.2
3.8
12
P/N 480145 Rev A
0.23
0.73
2.3
7.3
23
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