More precision in Timestamps

[Danigno]

Hello,

I'm acquiring 2.5MS/s with a DAQmx card. That means that my timestamps must have more than ms precision... When I have ms precision I get around (I don't know if it's exactly that) 2500 samples with the same time (for example 2500 samples at 0,023s).

So, how can I get more precision in my timestamps? I read something about getting another counter channel and use it as timestamp, but I want to know if there's any other path for that? I'm already acquiring 8 channels and 'fighting' to save them, I didn't want to add one more channel. And I need timestamps for EACH channel, and not one for all of them...

Thanks for the help,

Rafael

[TCPlomp]

Timestamps have 64 bit for 1 second so the absolute accuracy is much greater, maybe it's just the reprsentation.

Where do you read the timestamp?

Ton

[Danigno]

I'm saving the file with Write to Measurement File and I read it offline in TDMS File Viewer and also in Matlab (with the matlab converter from this link)

[TCPlomp]

The TDMS FileViewer will only set the start of the axis and continue from there on, so it doesn't really show what's in the file.

Ton

[Danigno]

But then how can it show the timestamp for each sample? (with ms precision)

[Danigno]

I'm reformulating my question:

How can I see my data with microseconds timestamps (any function, ow any 'path' for that), knowing that I can see it now in TDMS File Viewer with miliseconds timestamps?