Berlin Heart EXCOR Pediatric VAD, Руководство пользователя

Страница: 245 / 250

Chapter 17 EMC tables
Rated
maximum
output
power of
transmitter
[W]
Separation distance according to frequency of transmitter
[m]
150 kHz to
80 MHz
outside ISM
bands
d=0,35
√
P
150 kHz to
80 MHz in
ISM bands
d=1,2
√
P
80 MHz to
800 MHz
d = 0.4
√
P
800 MHz
to
6 GHz
d = 0.77
√
P
0.01 0.04 0.12 0.04 0.08
0.1 0.11 0.38 0.13 0.24
1 0.4 1.2 0.4 0.8
10 1.11 3.8 1.3 2.4
100 3.5 12 4 7.7
For transmitters rated at a maximum output power not listed above, the
recommended separation distance
d in metres [m] can be determined 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.
Tab. 17-4 Separation distance depending on frequency of transmitter
NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher fre­
quency 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
MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.70 MHz.
NOTE 3 An additional factor of 10/3 has been incorporated into the formulae
used in calculating the recommended separation distance for trans­
mitters in the ISM frequency bands between 150 kHz and 80 MHz
and in the frequency range 80 MHz to 2.5 GHz to decrease the like­
lihood that mobile/portable communications equipment could cause
interference if it is inadvertently brought into patient areas.
NOTE 4 These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures,
objects and people.
1000721x09 Revision 8
235