Append Waveform, keep time stamp

[COIEngineer]

I am reading from a USB module with data acquisition at 500 Hz. In order to achieve this within the loop time, I need to acquire multiple samples per loop. Once I have those samples (output in waveform), is there a way to append the waveform that maintains the time stamps?

I am currently using the "get time array", then inserting that data into a shift register of the same. I'd like to re-insert that data into the rest of the appended waveform to make writing the information that much easier. If that doesn't work, I'll probably just stick to making a 2D string array to write the data.

Thank you!

[crossrulz]

Look for the Append Waveforms VI.  It is in the Waveform->Analog Waveform palette.  I think that does what you are looking for.

[COIEngineer]

I tried the append waveform, but when I do that all dt and timestamp data appears to be removed (dt goes from .002 to 1)

[Dennis_Knutson]

Please show your code. You are doing something wrong.

[COIEngineer]

I am using Labview 2014, and have included the .vi and picture.

[COIEngineer]

Here is the picture with timing visible.

[Dennis_Knutson]

You have an unitialized shift register. That is why you have the default dt of 1.

[COIEngineer]

Do I need a seed value for the initialization? A constant doesn't appear to solve the problem. Thank you for your help on this.

[COIEngineer]

I'm hoping to be able to be able to keep the t0 data from the first measurement.

[JÞB]

You need the correct dt and t0 in the initalizing constant Leave Y and Attributes empty.  dt and t0 of waveform B are ignored by append waveform and the dt and t0 on the SR will be preserved and propigated through the loop.