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internal noise on Picoscope 4224 ?

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internal noise on Picoscope 4224 ?

Postby libussa » Wed Aug 03, 2011 9:42 am

I'm using the Picoscope 4224 to do long term surveiillance with piezoelectric sensors. When I looked at my signals, they showed a weird and constant frequency component.
I'm having a 300 kHz noise at all times. It shows even when nothing is plugged on the scope.
I tried unplugging the power supply from my laptop, turning off every other electrical in the room, and separating the scope from the laptop (2-3 meters), but the noise is still there.

Is this a known problem ? Could it be a defective unit ?

Thanks for your responses.

Re: internal noise on Picoscope 4224 ?

Postby Martyn » Wed Aug 03, 2011 2:26 pm

There are no known issues with this unit.

Can you please contact support@picotech.com to arrange further investigation of the issue and repair if necessary.

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