Fujitsu Lifebook T580 Manual page 26

8 – English
Table 4: Recommended protective distances between portable and
mobile HF telecommunications devices and the life-sustaining device or
The device or system is intended for use in the electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the device or system can help prevent
electromagnetic inference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the device or system as recommended below,
according to the maximum output power of the communications equipment.
Separation distance according to frequency of transmitter [m]
Rated maximum 150 kHz to
output power of 80 MHz
transmitter
Outside ISM bands
W
d
0,01
0,1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in metres (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:
The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to
6.795 MHz; 13.553 MHz to 13.567; 26.957 MHz to 27.283 MHz and 40.66 MHz to 40.70 MHz.
NOTE 3:
A factor of 3 is used to calculate the recommended separation distance for transmitters in the ISM
frequency ranges between 150 kHz and 80 MHz and in the frequency range from 80 MHz to
2.5 GHz in order to make it less likely that mobile/portable communications equipment can
generate interference if it is inadvertently brought into the close proximity of patients.
NOTE 4:
These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
20
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3.5
P
3
0.167
0.369
1.67
3.69
11.67
system
150 kHz to
80 MHz
Within ISM bands
12
d
P
3
0.40
1.26
4.00
12.62
40.00
LIFEBOOK T580
80
MHz to MHz to
800 MHz 2.5 GHz
12 23
d d
P
3 3
0.40 0.77
1.26 2.42
4.00 7.67
12.62 24.24
40.00 76.67
Fujitsu Technology Solutions
800
P