https://ni.lithium.com/t5/LabVIEW/Digital-video-acquisition-using-HSDIO/m-p/725518#M332011 <DIV>I am streaming video from an HDMI signal through a PXI-6542 directly into IMAQ vision buffers using the "Advanced DMA" mode of the "Fetch Waveform" vi. It works well with a start trigger configured as a pattern match on the vertical sync pulse, which is&nbsp;on channel 28 from my interface.&nbsp;From the examples on streaming to disc, it is apparent that a software reference trigger must also be configured. Indeed, streaming does not work without it. I would now like to refine the streaming to remove the blanking information in the signal. This is defined on channel 24 as a digital high for active video and low otherwise. If I configure a pattern match pause trigger, it removes the blanking information and I get a perfect picture, but I can only get one frame. I am assuming that I still need a reference trigger, but I get the following error when I configure both a pause and a reference trigger:</DIV> <DIV>&nbsp;</DIV> <DIV>Error -1074118619 occurred at niHSDIO Initiate.vi</DIV> <DIV>Possible reason(s):<BR />Driver Status:&nbsp; (Hex 0xBFFA4025) Pause and reference triggers cannot both be active in this session.</DIV> <DIV>Status Code: -200628</DIV> <DIV>&nbsp;</DIV> <DIV>Is there any way around this problem? and what role does the reference trigger play? Where does the software trigger come from and is it necessary for streaming applications?</DIV> <DIV>&nbsp;</DIV> <DIV>Thanks in advance</DIV> <DIV>&nbsp;</DIV> <DIV>&nbsp;</DIV> Mon, 16 Jun 2008 15:00:58 GMT ndb 2008-06-16T15:00:58Z https://ni.lithium.com/t5/LabVIEW/Digital-video-acquisition-using-HSDIO/m-p/725518#M332011 <DIV>I am streaming video from an HDMI signal through a PXI-6542 directly into IMAQ vision buffers using the "Advanced DMA" mode of the "Fetch Waveform" vi. It works well with a start trigger configured as a pattern match on the vertical sync pulse, which is&nbsp;on channel 28 from my interface.&nbsp;From the examples on streaming to disc, it is apparent that a software reference trigger must also be configured. Indeed, streaming does not work without it. I would now like to refine the streaming to remove the blanking information in the signal. This is defined on channel 24 as a digital high for active video and low otherwise. If I configure a pattern match pause trigger, it removes the blanking information and I get a perfect picture, but I can only get one frame. I am assuming that I still need a reference trigger, but I get the following error when I configure both a pause and a reference trigger:</DIV> <DIV>&nbsp;</DIV> <DIV>Error -1074118619 occurred at niHSDIO Initiate.vi</DIV> <DIV>Possible reason(s):<BR />Driver Status:&nbsp; (Hex 0xBFFA4025) Pause and reference triggers cannot both be active in this session.</DIV> <DIV>Status Code: -200628</DIV> <DIV>&nbsp;</DIV> <DIV>Is there any way around this problem? and what role does the reference trigger play? Where does the software trigger come from and is it necessary for streaming applications?</DIV> <DIV>&nbsp;</DIV> <DIV>Thanks in advance</DIV> <DIV>&nbsp;</DIV> <DIV>&nbsp;</DIV> Mon, 16 Jun 2008 15:00:58 GMT https://ni.lithium.com/t5/LabVIEW/Digital-video-acquisition-using-HSDIO/m-p/725518#M332011 ndb 2008-06-16T15:00:58Z