Multifunction DAQ

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usb-X6361 500KS/s cross talk among multiple channels

Hi, 

 

I am working on usb-X6361 to receive 5 channel synchronized signals. Four of them are all single-ended analog signals (ranging from -3V to 3V, with the frequency ranging from 10KHz to 40KHz);

while the fifth signal is the DC-like signals with 4 DC levels (0V, 1.25V, 2.5V, 3.75V, duration of each dc level is 1ms and they are changing from one dc level to the other every 1ms). One channel analog signal and the DC channel signal is as attched. 

 

When I am sampling all these five signals using the DAQ (I set the labview to record the Ai0-Ai4), but all the analog channels have DC components. While I am sampling the four analog channels, the problem is solved.

 

Can I know how I can solve this problem? Any advice on that?

 

In addition, can I also ask in the manual it said 500KS/s, does it mean that it is for the one channel maximum sampling rate? If I would like to use 5 channels, then the maximum sampling rate for each channel is only 100KS/s? 

 

Thanks

Chen 

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