How to get continous white noise using Simulink to produce analog output from NI USB 4431 DAQ ?

[iamrajakr]

I have to generate continuous white noise using the NI USB 4431 Analog output using SIMULINK. For that, I created an (i) white noise block and (ii) analog output block in the simulink, after this, I connected both blocks to generate the output. 

When I am running the Simulink, the white noise generating through the NI DAQ is not continuous; it is staggering. 

[ZYOng]

I don't have experience using NI-DAQmx with Simulink, but I can kind of guess the problem is on the sampling rate. What is your sampling/update rate?