How to make a differential DC voltage signal measurement Block diagram using NI-USB 6009

[huydle2004@yahoo.com]

May someone help me with the following question:

I am a new labview user. I would like to create a block diagram using NI-USB 6009 to measure the DC voltage differential from the two input channels.

Thanks for your help.

Huy Le

[BrowningG]

Hello Huy,

Thanks for contacting National Instruments. 

There are many resources for getting started with LabVIEW and data acquisition programming.  The https://learn.ni.com/learn/article/labview-tutorial  is an excellent tutorial for new LabVIEW users.  

The DAQ Assistant is an express VI created for use with the DAQmx driver.  NI-DAQmx Express VI Tutorial and Using the DAQ Assistant to Automatically Generate LabVIEW Code show you how to use the power of this VI to get started with a data acquisition application. 

Once you are more comfortable with the DAQ Assistant, Getting Started with NI-DAQmx and Learn 10 Functions in NI-DAQmx and Handle 80 Percent of Your Data Acquisition Applications are useful tutorials on the DAQmx API.  Being able to use the full DAQmx API will unlock the full potential of your measurement system.   

The DAQmx driver also includes numerous shipping examples that are loaded into LabVIEW.  The NI Example Finder, located in LabVIEW under Help -> Find Examples, contains many shipping examples for DAQmx.  The path Hardware Input and Output -> DAQmx -> Analog Measurements -> Voltage contains several examples for measuring voltage.  The Information section of the NI Example Finder Window explains the purpose of each of the examples included in the example finder. 

Please post back if you have any questions.