Hi!
My situation is quite simple. I'm using an X-series card (USB-6341) and I want to sample analog, digital and frequency at a sampling rate of 1000Hz. I want to use the analog sampling clock so that I get the digital and frequency channels synchronized with the analog input. What I have found is that I should use the AI Sample Clock as counter source. If I'm right the gate shall be my unknown frequency to measure and I shall use the method "Sample Clocked Buffered Frequency Measurement".
Now I read in the X series user manual that the frequency to measure must be at least twice the sample clock. But my frequency to measure ranges from 1 Hz to 10 kHz. Can it be that such a simple (and I guess common) task cannot be done with an X-series card that is supposed to be a top-of-the-line DAQ?
If it is possible, how shall I do it?
Many thanks for all input!