Hi,
I want to create the Low Pass Filter Tester with TestStand. I want to generate sine wave with frequency form 1 to 1k Hz and read amplitude before and after the filter. First of all I have to ensure synchronisation between DAQ read and DAQ write[ http://i79.photobucket.com/albums/j122/thor_tory/1_zpsab4a4c00.png~original ]. I already used a bit modified examplary sine wave generator to analog output VI and read from analog input VI. I put them as subVIs into one VI and then called it in TestStand although the read apmlitude was in many cases not even close to the generated amplitude (like the read was performed too soon). I put all subvis one by one, I also tried flat sequence structure but it was not ok because it stopped in first stage while generating sine wave.
Have you any idea how to make synchronisation between generating signal and acquiring amplitude? And what to match it to given frequency (value of frequency is increased in TestStand)?
Michał