Safety Electromagnetic Compatibility
62 Lumify Ultrasound System
Philips Healthcare 4535 618 58571_A/795 * MAY 2016
Typical Interference on Ultrasonic Imaging Systems
Imaging Mode ESD
1
RF
2
Power Line
3
2D Change of operating mode,
system settings, or system
reset. Brief flashes in the
displayed or recorded
image.
For sector imaging
transducers, white radial
bands or flashes in the
center lines of the image.
For linear imaging
transducers, white vertical
bands, sometimes more
pronounced on the sides of
the image.
White dots, dashes, or
diagonal lines near the
center of the image.
Color Change of operating mode,
system settings, or system
reset. Brief flashes in the
displayed or recorded
image.
Color flashes, radial or
vertical bands, increase in
background noise, or
changes in image color.
Color flashes, dots, dashes,
or changes in the color
noise level.
1. Electrostatic discharge (ESD) caused by discharging of electric charge buildup on insulated
surfaces or persons.
2. Radio frequency (RF) energy from RF transmitting equipment such as portable phones,
handheld radios, wireless devices, commercial radio and TV stations, and so on.
3. Conducted interference on power lines or connected cables caused by other equipment,
such as switching power supplies, electrical controls, and natural phenomena such as
lightning.
Recommended Separation Distance
The following table provides recommended separation distances, which are guidelines on the
distances that any RF transmitting equipment should be kept away from the ultrasound system
to reduce the risk of interference with the system. Portable and mobile RF communications
equipment should be used no closer to any part of the system, including cables, than the
recommended separation distance calculated from the equation applicable to the frequency of
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