The timestamp on the DLM2000 Mixed Signal Oscilloscope corresponds to the end of waveform acquisition and is the time of the very last acquisition. Likewise, the timestamp in history corresponds to the last waveform acquisition.
Please download and open the attached CSV file using Notepad to view the timestamp information. Do NOT open or save the files using Excel, doing so will round the timestamp and cause data loss.
For the "DLM2000 ASCII DATA Example with trigger time of 6.53.50AM.CSV" file, the trigger time was 6:53:50 AM. The time axis was set to 2s/div for a total time of 20 seconds. The total time of acquisition runs from 6:53:40 AM to 6:54:00 AM. Therefore, since the trigger position is located at 50%, the trigger time is 6:53:50 AM.