I have a Discovery 2 and ADP3450. I have been using Discovery 2 with Matlab to send signals to two different systems (a trigger to an external recorder and a seismic source signal). I need those signals to be synchronized but when I checked the data I could see they were not (with a sampling rate of 1e4 it varied from 0 to 10 samples shift).
So I run a simple test when I output these signals from 2 channels in AD and input them into 2 input channels (see photos). In theory you should get the same output as you send in. And this is true for Deigilent 2 (see picture below). But the same set up shows absolute rubbish for ADP and also Matlab gives me a "lost samples" warning.
So I have two questions:
1) Do output channels run on separate clocks? If so can I record a trigger time for each channel (Matlab has only one trigger time stamp output from what I can tell)
2) Is my ADP broken or is Matlab programming for it different? Or is it designed in a different way?
Question
Val
I have a Discovery 2 and ADP3450. I have been using Discovery 2 with Matlab to send signals to two different systems (a trigger to an external recorder and a seismic source signal). I need those signals to be synchronized but when I checked the data I could see they were not (with a sampling rate of 1e4 it varied from 0 to 10 samples shift).
So I run a simple test when I output these signals from 2 channels in AD and input them into 2 input channels (see photos). In theory you should get the same output as you send in. And this is true for Deigilent 2 (see picture below). But the same set up shows absolute rubbish for ADP and also Matlab gives me a "lost samples" warning.
So I have two questions:
1) Do output channels run on separate clocks? If so can I record a trigger time for each channel (Matlab has only one trigger time stamp output from what I can tell)
2) Is my ADP broken or is Matlab programming for it different? Or is it designed in a different way?
Any suggestions are much appreciated!
Best,V
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