natus Photic Stimulator, Руководство пользователя и обслуживания

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User & Service Manual Natus Photic Stimulator
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Follow these techniques to help reduce the incidence of component damage caused by static
electricity:

Immediately before handling any product components assemblies, drain the electrostatic
charge from your body by touching a known earth ground.

Minimize body motions when handling unpackaged replacement ESDs. Motions such as
brushing clothes together or lifting your foot from a carpeted floor can generate enough
static electricity to damage the product components.

Avoid carpets in cool, dry areas. If provided, leave the product components in their anti-
static packaging until ready to be installed.

Take care when connecting or disconnecting cables. When disconnecting a cable,
always pull on the cable connector or strain-relief loop, not on the cable itself.
Electrical Fast Transient (EFT) Procedures and Warnings
Electrical Fast transients are defined as short bursts of energy that are propagated through the
power cord. The EFT source is usually located in the nearby equipment or machinery such as
motors switching equipment light switches, etc.
The functionality of Some Semiconductor devices and high sensitivity amplifiers (EEG, EMG
ECG) may be affected by EFT.
For higher levels of EFT - the effect could be described as noise on the EEG waveforms or visible
variance in the stimulating pattern.
Follow these techniques to help identify the sources and reduce the effect of the EFT:

Verify the power supply and all portable multiple socket-outlets are off the floor and in a dry
location.

Verify the Power cord integrity, do not use portable multiple socket outlets that are not
properly grounded.

Do not use the power outlets without a protective ground

When isolation transformers are used, make sure that the Medical System is properly
grounded.

If the effect of the EFT is present on EEG waveforms and visual stimulators try to identify the
nearby possible equipment by disconnecting it from the common power source