SETTING VOLTAGE LEVEL TO 0 - 20 VOLTS ON LABJACK U3 HV | LabJack
 

SETTING VOLTAGE LEVEL TO 0 - 20 VOLTS ON LABJACK U3 HV

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jcallen1
SETTING VOLTAGE LEVEL TO 0 - 20 VOLTS ON LABJACK U3 HV

Where can I find the "Quick Note/Special/OPC column" to enter the number 32 so that I can measure voltages up to 20 volts?

Thanks

LabJack Support
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Channel 32 is a software

Channel 32 is a software implemented negative channel for the -10/+20 V range.  It is mentioned here:

https://labjack.com/support/datasheets/u3/hardware-description/ain/chann...

In your application you set your analog input negative channel to 32. So if you wanted a reading from AIN1, set the positive channel to 1 and the negative channel to 32. If you are still running into issues, what application or UD library call are you trying to use?

LabJack Support
labjack support's picture
Quick Note column in UD

Sounds like you are referring to this:

https://labjack.com/support/ud/df-lj-app-guide/3.2

The "Quick Note ..." column is to the right in the Channels list.  You can see it in the 2nd screenshot on the following page (note that this page is about LJM not UD so does not really apply to you besides having a screenshot that shows the column you asked about):

https://labjack.com/support/software/examples/ljm/daqfactory