From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
I'm having a bit of trouble with my timing. I'm measuring a digital signal and once it goes from low to high, I want to start measuring data. The trouble is, I'm getting 0s before my data starts to increase. (see attached .txt) The data I'm recording is a CMD signal from an MTS controller (for troubleshooting purposes). If I'm telling the data to collect once the sync out reaches high, why am I getting these zeros initially? I'm using a MCC 1608FS as my Daq.
I'm not quite sure what you mean by the zeros in the text file, all the values I saw were nonzero. Did you mean the empty first column before the first comma? I think that is due to the time column being empty, so if you re-enabled this you would see a value there.
Does the data also appear wrong on the waveform chart? You do have a coercion dot on the Write to Measurement File VI, so it might be worth reading that waveform into strings and see where the zeros appear.
