LabVIEW
DAQ-PXI 6259
Hello Meenatchi,
It appears what you are trying to do is to use synchronized digital output so that one sample is output on all of your lines at the same time, for different lengths of time. If this is the case, then what Britoa suggests is probably the best way to go about it. You can programatically "decide" what you want to output and then build a digital waveform to reflect the behaivior you want to see. For example, if you wanted to output at 1kHz and you wanted channel 1 to output continuously while channel 2 only output for 1 second, then you would programatically construct a waveform where channel 2 was set low after 1000 samples. The example that I would start with would be the Cont Write Dig Port-Ext Clk-Non Regeneration.vi
As far as having different tasks running, the only way you can do that is if you use software timing (1 sample On Demand) for the different lines. You can then create a different task for each line and stop them independently as shown here:
Your lines will not be synchronized, but you could then use a case structure to decide whether to write to each line or not.
I hope this gives you a place to start, post back if you have any issues programming this.
Message Edited by Neal M on 12-26-2007 01:42 PM
It appears what you are trying to do is to use synchronized digital output so that one sample is output on all of your lines at the same time, for different lengths of time. If this is the case, then what Britoa suggests is probably the best way to go about it. You can programatically "decide" what you want to output and then build a digital waveform to reflect the behaivior you want to see. For example, if you wanted to output at 1kHz and you wanted channel 1 to output continuously while channel 2 only output for 1 second, then you would programatically construct a waveform where channel 2 was set low after 1000 samples. The example that I would start with would be the Cont Write Dig Port-Ext Clk-Non Regeneration.vi
As far as having different tasks running, the only way you can do that is if you use software timing (1 sample On Demand) for the different lines. You can then create a different task for each line and stop them independently as shown here:
Your lines will not be synchronized, but you could then use a case structure to decide whether to write to each line or not.
I hope this gives you a place to start, post back if you have any issues programming this.
Message Edited by Neal M on 12-26-2007 01:42 PM
