Problem with U3 and LJTick-InAmp | LabJack
 

Problem with U3 and LJTick-InAmp

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Helait
Helait's picture
Problem with U3 and LJTick-InAmp
I connected the LJTick - InAmp card to the FIO6-FIO7 input.
I connected the Red and Black wires of the Strain Gage (Figure attached) to GND and VRef of the LJTick-InAmp
I connected the White and Green wires of the Strain Gage to IN -B and IN + B of the LJTick-InAmp
The LJTick-InAmp switches are all OFF
On FIO7 I don't see voltage variations.
What am I doing wrong?
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LabJack Support
LabJack Support's picture
Hello,

Hello,

Please see this page for a basic operation test and some troubleshooting tips:

https://labjack.com/support/datasheets/accessories/ljtick-inamp/appendix-e

Also note that you will want some of the switches on, at least to get the gain setting you will need. See this page for some considerations when using a LJTick-InAmp with bridge circuits:

https://labjack.com/support/datasheets/accessories/ljtick-inamp/appendix-d

The allowable input range mentioned in the page above is referencing the table here:

https://labjack.com/support/datasheets/accessories/ljtick-inamp/appendix-a