Time format in 'Write To Measurement File' express vi

[scalpas]

Hi,

I'm using the 'Write To Measurement File' express vi to save data acquired using a PCI-6221 board and the DAQmx vi s. The acquisition is continuous.

When I set the 'number of samples per channel' property of the DAQmx Read.vi to -1 (ie, read all available samples), the time is saved in relative format. When I set any other value (ie a certain quantity of samples), the time is saved in absolute format.

Do you know why the vi does this, and if there's any way of controlling the time format ?

Thanks,

ps : I use Labview 8.0 

[Sappster]

Hi Scalpas,

I look into what I believe you are doing , but I didn't see the same results. Can you explain what datatype you are transferring to the Write to Measurement file VI? Or provide a sample of code that demonstrates the issue.

I think it might have to do with the DataType conversions when writing that file.

[scalpas]

Hi,  

 The datatype is a waveform. However, I've upgraded to Laabview 8.5.1 and it seems to have solved the problem !