06-14-2013 07:22 PM
HI, I am trying to trigger my acquisition from a function generator into the PFI1 channel on the PXI-5105 in LabVIEW. I am configuring the trigger using the niScope Configure Trigger Edge.vi and choosing "External TRIG" as the channel. In my code I receive an error at the niScope Actual Num Wfms.vi. The error displays "Source terminal could not be found on the device" if I choose Digital Edge on the configure trigger vi and displays "Invalid value for parameter or property. Property: Trigger Source Invalid Value: TRIG" if I choose Analog edge on the configure trigger vi. I am able to trigger on any of the 8 RTSI channels without problem but I was hoping there was a way to trigger on the PFI1 channel.
Do I need to configure the PFI1 channel before using the configure trigger vi? If so, how do I configure the PFI1 channel?
OR
Is there a better way to configure the trigger besides using the configure trigger vi?
06-17-2013 09:57 AM
Hi,
You should be able to use the PFI line to trigger with the 5105 by specifying PFI 1 on the input to the scope trigger VI. Note that the available trigger channels does not update when you change the trigger type. For example, if you create a constant/control on the trigger terminal input and then change the trigger type to digital from analog you will need to recreate the control/constant to get the updated list of available channels.