How to use USB-8452 to read multiple channels on ADS8331 using stream API

[jemmylegs]

I am using the USB-8452 to evaluate ADS8331 EVM (the example VI in Labview 2010) - manual channel select mode. It seems that the board just constantly sending output for channel 0 input. When I change it to other channel, it is still sending out channel 0 output. It almost look to me like it is not configured to the correct port but I am not able to figure out how to do this. The ADS8331 specs said that I just need to change the CMR 4 bits. Is there something else I am missing here? I am still new to using this stream API.

Thanks in advance.

[Larry_H]

Hi,

In regards to your question, I have a theory on the way that the data is being transferred to your USB-8452. To test this theory, I'd like for you to make a modification to your VI. I have attached an image to this post on the change I would like for you to make. In theory, this change would allow you to sample channel 2 of the ADC. Could you please make this change, run the VI, and report your findings? I would suggest saving a copy of your original example in a different location and then modifying it there. This way you will not change your example that shipped with your driver.