Deviation of measurement

2 posts / 0 new

Mon, 09/14/2020 - 09:03

Jack

Dear support,

I experienced a behavior of my U3 which i cant explain my self.

I am measuring 3.3Vdc/5Vdc /12Vdc at the AIN pins, the 12Vdc and 20Vdc are configured as special measuring higher voltages.

I want to know what the maximum deviation of my measurement will be?
How do I do this or how do i start with calculating this...?

Could you please explain to me.

Sincerely
Jack

Mon, 09/14/2020 - 12:23

LabJack Support

It sounds like your inputs

It sounds like your inputs could be floating, so check your connections:

Besides that, please try removing all connections from the device and run through this application note on testing the AIN:

You can find all of the U3 specifications on this page:

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