We have developed a C# application which uses the USB-1808X. The USB-1808X received voltage data on analog input channels 0, 1 and 2.
If the computer application is using power that is dirty, we see background noise in the voltage data. Since the USB is providing power to the data logger, I guess the dirty power is impacting the analog inputs.
I have noticed that there are USB filters. You connect the USB filter to the computer and then connect the USB cable from the device to the USB filter. Do you have any thoughts on this strategy?
DataQ advertises an anti-aliasing filter. The filter is used before a signal sampler to restrict the bandwidth of a signal to satisfy the Nyquist–Shannon sampling theorem over the band of interest.
Question
PhilipW
We have developed a C# application which uses the USB-1808X. The USB-1808X received voltage data on analog input channels 0, 1 and 2.
If the computer application is using power that is dirty, we see background noise in the voltage data. Since the USB is providing power to the data logger, I guess the dirty power is impacting the analog inputs.
I have noticed that there are USB filters. You connect the USB filter to the computer and then connect the USB cable from the device to the USB filter. Do you have any thoughts on this strategy?
DataQ advertises an anti-aliasing filter. The filter is used before a signal sampler to restrict the bandwidth of a signal to satisfy the Nyquist–Shannon sampling theorem over the band of interest.
Regards,
Philip
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