DaqMX - Access TDMS dt and timestamp Before "Stop Task" is called

Question

When using DaqMX to store sampled data to a TDMS file, how can I access the Start Time and dt? Is there a property Node, etc I can read from? The TDMS file does not include the datestamp and dt until AFTER the "Stop Task" is called (looks like another Labview bug), and I need to view it while the task is still running. See attached
Attachments:
DaqMX_TDMS_NoDatestamp_Example V2.vi ‏31 KB

Answer 1

I suppose I should clarify... So our application generates the TDMS file during functional test; the TDMS file is to be used for troubleshooting reasons only when a failure occurs. When we get a failure during functional test, the requirement is that the software pauses on failure. When this happens, we need to be able to open the TDMS file to look at various signals to see how they behaved during functional test to help us arrive at the Root Caue. The issue is that until the "DAQmx Close Task" VI is called, Labview does not store the To and DT information in the TDMS file (not sure why this is, appears to be a bug). Since we cannot terminate the functional test due to our Pause on Failure requirement, when we look at the TDMS file for debug purposes, it shows the timestamp starting in the year 1903, and it inferrs a DT of 1 second, rather than 10ms. This is very embarrassing to show to the customer.
It's obvious that Labview knows the DT and To, but only chooses to write it to the TDMS file when we Close the task. Any insight? TDMS files are made to be viewable while Labview is writing to them, but waiting until the end to store the Timing information is a Huge drawback to using them with DAQmx...