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View Full Version : Re: Noise beyond 60Hz



unknown user
04-30-2000, 11:37 PM
Consider using a flat-panel (LCD) screen.

Jeff Lewin
Seagate Technology (MN)


On Thu, 27 Apr 2000, Mike Monroe wrote:

> I am using a portable Myopack EMG system (RUN technologies) using 6 of 8
> available channels for data collection. Usually only 60hz is emitted by
> electrical devices, but I am finding out that computer monitors are
causing
> more than just 60Hz interference--they are causing the EMG system to pick
> up interference at approximately 60-62Hz, 120-123Hz and 180-184Hz during
a
> very low exertion keyboarding task....
...snip...
> Mike Monroe
> NCSU Ergonomics Lab

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