Spikes in dZ/dt

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Joined: 04 Dec 2014, 13:37

Spikes in dZ/dt

Postby AMSuser » 26 Nov 2015, 17:50

Hi again

We discovered some sort of spikes in the dZ/dt channel:

Spikes.JPG
Spikes.JPG (42.77 KiB) Viewed 7260 times


We also noticed a sort of wishbone like periodic repetitive signal in the raw motility channels:

WishBone.JPG
WishBone.JPG (60.46 KiB) Viewed 7259 times


Do you have any idea what could be the problem?

Regards,
AMS user

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Posts: 35
Joined: 06 Jan 2012, 12:41

Re: Spikes in dZ/dt

Postby JarikdenHartog » 01 Dec 2015, 18:03

Hi again AMS user,

This is clearly a hardware problem! Please contact us via vu-ams@psy.vu.nl so we can arrange the necessary hardware repair.

Best,
Jarik

User avatar
Posts: 35
Joined: 06 Jan 2012, 12:41

Re: Spikes in dZ/dt

Postby JarikdenHartog » 12 Jan 2017, 15:16

Please see the temporary solution below:

The hardware problem is a connector inside the device is not gold plated and has to be replaced. If you can’t miss the device you can postpone our repair by dropping the VU-AMS device from about 20cm on a hard surface like a desk without any connectors attached (I’m not joking). This will make the connector move a little and clean the contact (for a while). This also explains why the problem might seem to disappear sometimes if you would be looking at previously recorded data.

Best,
Jarik

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