FujiFilm Sonosite PX System, Руководство по обслуживанию

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20 Chapter 3: Safety
Electrostatic discharge
Separation distance
Manufacturer’s declaration
The tables in this section document the intended use environment and EMC compliance levels of the
Caution:
Electrostatic discharge (ESD), or static shock, is a naturally occurring
phenomenon. ESD is common in conditions of low humidity, which can be
caused by heating or air conditioning. ESD is a discharge of the electrical
energy from a charged body to a lesser or non-charged body. The degree of
discharge can be significant enough to cause damage to a transducer or an
ultrasound system. The following precautions can help reduce ESD: anti-static
spray on carpets, anti-static spray on linoleum, and anti-static mats.
Recommended separation distances between portable and mobile RF communications equipment and the
Sonosite PX ultrasound system
WARNING:Portable RF communications equipment (including peripherals, such as antenna cables and external
antennas) should be used no closer than 30 cm (12 inches) to any part of the Sonosite PX ultrasound system,
including cables specified by the manufacturer. Otherwise, degradation of the performance of this equipment
could result.
The Sonosite PX ultrasound system is intended for use in an electromagnetic environment
in which radiated radio frequency (RF) disturbances are controlled. The customer or the
user of the Sonosite PX ultrasound system can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the Sonosite PX ultrasound system as recommended below,
according to the maximum output power of the communications equipment.
Rated
maximum
output power
of transmitter
Watts
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d=1.2
80 MHz to 800 MHz
d=1.2
800 MHz to 2.5 GHz
d=2.3
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 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: At 80 MHz and 800 MHz, the separation distance for the higher frequency range
applies.
These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects, and people.
P P P