2 - 18 WS80A Service Manual
Doppler
(Doppler)
A horizontal line is displayed
on the spectrum display or
tone, abnormal noise is
created, or both occur
together.
A vertical line is displayed
on the spectrum display or
a bursting noise is
created, or both occur
together.
1. ESD which occurs when charges accumulated on an insulated floor or human is discharged.
2. RF energy created from the RF transmission devices such as mobile phone, portable radio,
wireless device, commercial radio and TV.
3. Malfunction which occurs due to switch of power supply to power cable or connected cable,
electronic control, or natural phenomenon 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’s ultrasound systems do not generate electromagnetic 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. Tracing the source of radiated interference can be a difficult task.
Users should consider the following in an attempt to locate the source.
- Is the interference intermittent or constant?
- Does the interference show up only with one probe operating at the same frequency or
with several probes?
- Do two different probes operating at the same frequency have the same problem?
- Is the interference present if the system is moved to a different location in the facility?
The answers to these questions will help to determine if the problem resides with the
system or the scanning environment. After you answer the questions, contact your local
Samsung Medison customer service department.
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