Beginners Question - Scaling an Accelerometer

[signal1]

I'm trying to scale accelerometer input properly in DASYlab. 

If my accelerometer has a sensitivity of 0.1 V/g and use the Scaling module, my y/t chart outputs for even small inputs are questionably high.  This leads me to question my setup. 

I'm using two scaling modules, one for volt to G and a second for g to m/s^2.

In the V to g module, I'm using two defining points of x1, y1 = 0, 0.1  and x2, y2 = 0, 1.0 

The second scaling module is for unit conversion of acceleration from g to m/s^2. 

Yet even a very little tap with the soft part of the little finger gives over a volt of output - over 10 g's. 

What am I doing wrong? 

Thanks,

Bob

[Jesse_O]

Hello Bob,

Thank you for posting to the National Instruments discussion forums.  If you would like help configuring a scale for your accelerometers in DASYLab, please contact DASYLab support.  You can either post a message on one of their discussion forums (found here), or contact their support (found here).

If you believe the problem is with your hardware setup, I can help you with that.  If you would like to test your hardware, please create a DAQmx task in Measurement and Automation Explorer (MAX).  To do this right click on Data Neighborhood and select Create new.  In the window that appears select NI-DAQmx Task.  Follow the on screen prompts to complete the setup.  You should be able to specify G or m/s^2.  You can then save and test your task.  Hopefully this test will show everything working correctly.  If this is the case, DASYLab support should be able to help you out.

Regards,

Jesse O.
Applications Engineering
National Instruments