PXI-4461 Onboard device memory underflow

I am using a PXI-4461 to generate an aquire a singal. When i generate the signal i get error -200621( onboard device memory underflow) onDAQmx Stop VI. I donot understand what the error means.
Signal Information
Signal Type=Sine Wave
Frequency=3K
amplitude=0.3V
Sampling Rate=48K
Number of samples sent=48000 or 1sec
I have tried reducing my sample rate to 20000 but that didnot help much. How do i get rid of this error
I have attached an picture of my vi below
Thanks. Any help whould be much appreciated.
CS
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Attachments:
Code Image.png ‏82 KB

Welcome and thank you for using the Discussion Forums! This error is most likely due to the non-regeneration property you have set. What's happening is that LabVIEW generates your two sine waves continuously, but slower than the update rate of the DAQ card, so the buffer gets empty before it can write enough samples to the buffer so that the 4461 can keep generating the voltage values on the channel.
What you could do is simply set the Regeneration mode to "Allow Regeneration". I tried the non-regeneration and regeneration property on the "Voltage - Continuous Output.vi" and it works with regeneration enabled.
Regards,
Daniel REDS
RF Systems Engineer
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Attachments:
Class Browser.png ‏25 KB

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I am using PXI 4461 card, which has 2 inputs and 2 outputs.
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Attachments:
4461.vi ‏17 KB

LV2010,
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In order to see the waveforms, I added a Waveform Graph to my front panel and then on the block diagram I wired it to the data output of the DAQmx read.
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Also, here is an article and here is an example from our community forums you may find helpful.
The attached Code is provided As Is. It has not been tested or validated as a product, for use in a deployed application or system, or for use in hazardous environments. You assume all risks for use of the Code and use of the Code is subject to the Sample Code License Terms which can be found at: http://ni.com/samplecodelicense
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Attachments:
Edited-Cont Gen Voltage Wfm-Int Clk-Non Regeneration.vi ‏38 KB
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PXI-4461 Onboard device memory underflow

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