Dynamic Signal Acquisition

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synch dsa output and daq input

We want to synchronise the analog output in PXI 4461 with the analog input in PXI 6133.

 

We did the following code, but the problem is there is a delay of 4ms to 60ms happening depending on at what rate we are doing the acquisition.

 

Our requirement is simply to generate the signals out of 4461 and connect the same signal to the input of 6133.

 

In the program attached, we have made the analog output to start with the analog input start trigger. For proper synchronisation, we know that we have to share either the timebase or the sample clock which we are not able to do in this case as the cards are of two different types (DSA and DAQ). Since the DSA card is having a timebase for 20.48MHz we are not able to share it with the S Series card.

 

What modification in the program would help us in reducing the delay between these data?

 

Another observation is, when the rate of acquisition and generation are increased, generation is happening properly and in acquisition we are able to see increase in the delay.

 

 

Regards,

Tejeswar.J

 

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