DAQmx, TDMS logging

[A.Ramirez]

I am trying to grab the y values from DAQmx and timestamps from irig and log them on different channels (y channel, time channel) on  a tdms file so I can graph the data in Daidem. However, it gives me a 2515 error at the TDMS write. what am I doing wrong?

[crossrulz]

Instead of writing to the Group, write to the Channel.

[A.Ramirez]

the daqmx "analog 1d dbl nchan 1samp" outputs 16x1 channel sample array with each row being a channel. I tried writing to a channel instead of a group but daidem only recognizes the 16x1 array as samples from 1 channels when I write to group or channel. Labview still gives me the error mentioned above.

[crossrulz]

Ok, slight correction: supply a channel name for the timestamp channel (leave the group connected).

[A.Ramirez]

so the timestamp are now in its own channel and shows up in diadem. however daqmx "analog 1d dbl nchah nsamp" out puts multiple channels in a 16x1 array (chanxsamp) but only shows up in diadem as 1 chan. it looks like it takes the array and interprets it as 1chan nsamp and shows up in diadem as 1 chan. how can I make it interpret it as 16 channels.

[crossrulz · Accepted solution]

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@A.Ramirez wrote:

how can I make it interpret it as 16 channels.

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Supply an array of names for the channels.  There should be 16 names in that array.

[A.Ramirez]

Apologize  for the delay. Yes that fixed the problem.