Acquire two input signals (Analog) using DAQ USB 6363

[rajavmech]

Piezo1 connected to a0, Piezo2 connected to a1. How to get these two signals separately using (DAQassistant or piezo1 excitedpiezo2 excitedDAQmx) - DAQ USB 6363?

In the following figure, the front panel window shows two images - (piezo1 excited-it affects both graphs, piezo2 excited separately - it also affects both graphs), acquiring two piezo signals.

If piezo1 is excited, the signals are acquired in both graphs (Graph1 - piezo1, Graph2-piezo2) giving responses in both graphs.

If piezo2 is excited, the response signals are acquired in both graphs (Graph1 - piezo1, Graph2-piezo2), giving responses in both graphs.  We need to take a response separately using DAQ assistant or DAQmx.

How to solve this problem?

[santo_13]

Please share the original VI.

The issue seems electrical and not a software one, looks like the Ghosting effect expected in a Multiplexed AI, please refer to the below links for more details,

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YHy6CAG&l=en-US

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P84RSAS&l=en-US

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P9mKSAS&l=en-US

[rajavmech]

Thanks for the information, Mr. Santhosh. 

The VI image is attached for your reference. In this LabVIEW block diagram, how can able to add a dummy channel in between ai0 and ai1 to avoid the ghosting effect.

Tell me your suggestions.