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U3-HV : drop of voltage over 3.6V


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#1 user1979

user1979
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Posted 15 January 2014 - 06:48 AM

Hello,

 

i am using a U3-HV with labview 11. In order to make AI readings over 2.4V I have set the negative channels to 32. When my input gets higher than 3.6V the readingsfalls back to 2.6V. Is there a way to avoid this drop by changing a parameter in the program? perhaps via the Control Pannel of your software? Having a reading blocked at 3.6V for any measures over 3.6V would be great.

 

Many thanks,

 

User



#2 LabJack Support

LabJack Support
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Posted 16 January 2014 - 09:02 AM

That is the way the 0-3.6V input behaves in hardware.  When you go over 3.6V the protection diodes start to clamp and that pushes the voltage reading back down.  Consider using an LJTick-Divider.




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