Q9 Digital Color Doppler Ultrasound System
194
portable and mobile RF communications equipment and the Q9
The Q9 is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the Q9 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the Q9 as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum
output
power of transmitter
W
Separation distance according to frequency of transmitter
m
0,01 0,12 0,12 0,23
0,1 0,38 0,38 0,73
1 1,2 1,2 2,3
10 3,8 3,8 7,3
100 12 12 23
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 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and
reflection from structures, objects and people.
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