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Operation Manual
Avoiding ElectroMagnetic Interference
Typical interference on Ultrasound Imaging Systems varies depending on Electromagnetic phenomena.
Please refer to following table:
Imaging Mode ESD
1
RF
2
Power Line
3
2D or 3D
Change of operating
mode, system
settings, or system
reset.
Brief ashes in
the displayed or
recorded image.
For sector imaging probes, white
radial bands or ashes in the
centerlines of the image.
For linear imaging probes, white
vertical bands, sometimes more
pronounced on the sides of the
image.
White dots, dashes,
diagonal lines, or diagonal
lines near the center of the
image.
M
Increase in the image background
noise or white M mode lines.
White dots, dashes,
diagonal lines, or increase
in image background noise
Color
Color ashes, radial or vertical
bands, increase in background
noise, or changes in color image.
Color ashes, dots, dashes,
or changes in the color
noise level.
Doppler
Horizontal lines in the spectral
display or tones, abnormal noise in
the audio, or both.
Vertical lines in the spectral
display, popping type noise
in the audio, or both.
ESD caused by discharging of electric charge build-up on insulated surfaces or persons.
RF energy from RF transmitting equipment such as portable phones, hand-held radios, wireless devices,
commercial radio and TV, and so on.
Conducted interference on powerlines or connected cables caused by other equipment, such as switching
power supplies, electrical controls, and natural phenomena such as lightning.
A medical device can either generate or receive electromagnetic interference. The EMC standards describe
tests for both emitted and received interference.
Samsung Medison Ultrasound Systems do not generate interference in excess of the referenced standards.
An Ultrasound System is designed to receive signals at radio frequency and is therefore susceptible to
interference generated by RF energy sources. Examples of other sources of interference are medical
devices, information technology products, and radio and television transmission towers. Due to the
diculties in nding sources of interference, refer to the following when searching for them.
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