FujiFilm VisualSonics Vevo MD User Manual page 364

Electrostatic discharge
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.
Separation distance
The Vevo MD Imaging 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 Vevo MD Imaging System can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Vevo MD Imaging System
ultrasound system as recommended below, according to the maximum output power
of the communications equipment.
Rated maximum
output power
of transmitter
(Watts)
0.01
0.1
364 Appendices
Separation distance
Separation distance according to frequency of
transmitter (m)
150 kHz to 80 80 MHz to 800
MHz
d=1.2 √P
0.12
0.38
800 MHz to 2.5
MHz
d=1.2 √P
0.12
0.38
GHz
d=2.3 √P
0.23
0.73