08-02-2010 03:37 PM
I am trying to determine if there is a way to add a delay to the triggering of the USB-6009. I would like to capture the data 1 second after the trigger even occurs. Everything I have seen with waits and delays are for the VI itself. I need to create the delay insided the DAQ Assistant.
08-02-2010 05:10 PM
If the low cost 6009 supports it, there is a Delay property of the trigger class. You would need to stop using the DAQ Assistant and use the lower level DAQmx functions.
08-03-2010 07:16 AM
Thanks for the infomation Dennis. Do you have any guidance on how to do that? I will spend sometime today trying to figure it out. Do you know if I would have to change from the DAQ assistant in every instance or just the one time that I need the 1 second delay?
08-03-2010 10:06 AM
You can right click on a DAQ Assistant and select 'Generate NI DAQmx Code'. There are numerous examples as well. Help>Example Finder>Hardware Input and Output>DAQmx.
I don't ever see a need for a single DAQ Assistant but as long as you are stopping the task in one, you should be able to create a new one with the low level functions.
08-09-2010 08:51 AM
I was not able to figure out how to use the DAQmx functions and the USB 6009 did not have the delay property that you spoke of. Instead, I populated an array with 10Hz data and through out the first 10 (not the most elegant, but it will work I guess.) I will look into the USB 6210 to see if it has the delay property that you spoke of when I purchase it. I need the low range accuracy readings that it supposedly provides.
08-09-2010 01:29 PM
The 6210 does support the delay property and is more accurate than the 6009 (88 uV accuracy on the ±200 mV range as opposed to 37.5 mV on the ±1 V range of the 6009).