Smarty Saver Plus - RF Separation Distances

SEMI-AUTOMATIC
42
11.3 Recommended separation distances between portable and
mobile RF communication devices and the SMARTY Saver
Plus device
SMARTY Saver Plus must be used in an electromagnetic environment in which interference from radiated RF is
controlled. The customer or operator of SMARTY Saver Plus can help prevent electromagnetic interference by
maintaining the minimum distances between portable and mobile RF communication devices (transmitters) and
SMARTY Saver Plus recommended below, based on the maximum output power of the communication devices.
Maximum Rate of
transmitter power
emission
W
Separation distance in accordance with the transmitter’s frequency
m
From 150kHz to 80
MHz outside the ISM
bands
Pd 2.1=
From 150kHz to 80
MHz inside the ISM
bands
Pd 2.1=
From 80 MHz to
800 MHz
Pd 2.1=
From 800 MHz to
2.5 Hz
Pd 3.2=
0.01
0.12 m
0.12 m
0.12 m
0.23 m
0.1
0.37 m
0.38 m
0.38 m
0.73 m
1
1.12 m
1.2 m
1.2 m
2.3 m
10
3.7 m
3.8 m
3.8 m
7.3 m
100
12 m
12 m
12 m
23 m
For transmitters whose estimated maximum power is not listed above, the separation distance “d” in metres (m) can be
determined using the equation that applies to the transmitter’s frequency, where P represents the maximum power
produced by the transmitter in watt (W) in accordance with the transmitter’s manufacturer.
NOTE 1:
At 80 MHz and 800 MHz, the separation distance applied is the one used for high frequency intervals.
NOTE 2:
The ISM frequency bands (for industrial, scientific and medical application) between 150 kHz and 80
MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz and 40.66
MHz to 40.70 MHz
NOTE 3:
An additional factor of 10/3 is used in the calculation of the recommended separation distance for
transmitters in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency interval
from 80 MHz to 2.5 GHz to reduce the possibility that portable/mobile equipment can interfere, if
accidentally brought into the patient’s area.
NOTE 4:
These guidelines may not be applicable to all situations. Electromagnetic diffusion is affected by
absorption and reflected from structures, objects and people.