Read only limited samples from the continuously coming samples

[Bhoomi]

Hi..

I am using the NI DAQ PCI CARD 6534 for my digital data acquisition application. I Am using the DAQmx drivers for this..

I am taking the coming samples contentiously from my circuit but I want to update my graph after every second.So my application is to read the no of samples the system can read in Sec and then update the graph..

I have tried a lot for this but as its continuous acquisition the system reads all the available counts in the buffer memory.. So can anyone help me for this so I can read only the samples which the system can read in second.

I have set the read property position to current position so it will give me the starting point for the read but how can I stop the reading the after one second..

Please some one help me its really urgent and important for my further application.

[Pradeep_Patil]

If you want to continuously update, you better use chart and restrict loop iteration to one per second using 'wait until next ms multiple'.

Pradeep.