Philips iU22 - Page 79

diagnostic results are suspicious, other means should be used to confirm
the diagnosis.
Typical Interference on Ultrasonic Imaging Systems
Power Line
3
RF
2
ESD
1
Imaging Mode
White dots,
dashes, or diagonal
lines near the
center of the
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.
Change of
operating mode,
system settings, or
system reset. Brief
flashes in the
displayed or
recorded image.
2D or 3D
Color flashes, dots,
dashes, or changes
in the color noise
level.
Color flashes,
radial or vertical
bands, increase in
background noise,
or changes in
image color.
Change of
operating mode,
system settings, or
system reset. Brief
flashes in the
displayed or
recorded image.
Color
Vertical lines in the
spectral display,
"popping" noise in
the audio, or both.
Horizontal lines in
the spectral display
or tones, abnormal
noise in the audio,
or both.
Change of
operating mode,
system settings, or
system reset. Brief
flashes in the
displayed or
recorded image.
Doppler
79
iU22 User Manual
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2
Safety