Reading Multiple Analog Input Channels With Multiple External Sample Clocks

[zstpierre4]

Hi,

I have a DAQ M Series NI 6251 and LabVIEW 2011.

I am trying to read voltage measurements from 16 analog input channels. Each channel has a corresponding voltage pulse which should tell the DAQ when to read the voltage of that input channel. My thought was to use a sample clock with an external source for each channel where the external source for each clock is the voltage pulse. However, I seem to only be able to use one sample clock in a vi. Am I able to accomplish the task this way or is there a better way to do it?

Thanks

[Alexander_Sobolev · Accepted solution]

6251 has only one ADC, that is switching between channels. You can not run different channels at different rates.

Boards with simulataneous sampling might help. Another option is to scan all channels and decimate/average channels differently.

[zstpierre4]

Thank you for the help I will explore the other method.