User and Service Manual XLTEK EEG32U Amplifier
21
Conducted Immunity Procedures and Warnings
Conducted immunity is defined as the ability of an electronic product to tolerate the influence of electrical energy from other
electronic products or electromagnetic phenomena.
The electrical energy from other electronic devices located in nearby equipment are usually propagated through the connecting
cables. The functionality of some Semiconductor devices and high sensitivity amplifiers (EEG, EMG ECG) may be affected by
induced parasitic signals.
This effect could be described as noise and/or channel saturation on the EEG waveforms, which are coupled together with off
the scale values for auxiliary sensors.
To help identify the sources of and reduce parasitical noise:
• Verify the power supply and all portable multiple socket-outlets are off the floor and in a dry location.
• If parasitic noise is present on the EEG waveforms, try to identify possible culprits by disconnecting nearby equipment
from the common power source.
• Lay out the interconnection cables as far as possible from the cables being used by nearby equipment.
• Verify the power cord integrity. Do not use portable multiple socket outlets that are not properly grounded.
• Do not use power outlets without a protective ground
• When isolation transformers are used, ensure that the Medical System is properly grounded.
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