Continuous buffered DAQ with a non-NI card

[jweisenb]

I have a 6 axis JR3 transducer and a JR3 PCI card with on-board decription for the transducer signal.  I have ActiveX controls downloaded from Dr. J Norberto Pires that interact with the transducer in LabView, but the only vi that obtains data is "Read F/T Data" and this only gets me one sample of the six signals. 

I need to acquire very fast and continuously so no data is lost, but using this Read F/T Data vi in a timed while loop doesn't work because some loop counts are missed.  The "continuously" part is also a problem.  Solving this is, of course, is very easy using the DAQ assistant, but because the card isn't NI, I don't believe I have this option.

I also need to sync the DAQ timing with another card, an NI card, that I currently have working perfectly in a continuous buffered DAQ read and write.

Help if you can, or point me to a page where I can read something useful.  Thank you! 

[Jason W]

Hey jweisenb,

Thank you for contacting National Instruments.  I will not be able to help you with programming with your thrid party daq device in Labview, but I can help you out with syncing the daq timing of your thrid party card to our card.  There are 2 different things you can do to sync these two cards.
1.  You can wire up an external clock and an external trigger to each device.  This will start the 2 devices together and keep them in sync throughout the process.
     There is a great example in the Labview example finder called "multi-device synch-shared ext sample clk.vi" that shows how to set this up in Labview.  It               appears under Hardware Input and Output/DAQmx/Synchronization/Multi-Device

2.  You can wire the clock output of the NI device to the PFI line on the same device.  Then wire that PFI line to a PFI line on the other daq device.  This will then         allow the two cards to share the same clock and start trigger.
     A good example of this in Labview can be found in the same place as the one above.  It is called "multi-device synch-analog input-cont acquisition.vi"

Let me know if you have anymore questions.
Thanks,
Jason W
Application Engineer
National Instruments