Using PFI0 as a trigger and PFI1 as an input on PCI-5114

[Karl T.]

Hi,

I have a NI-5114, and I'm currently using PFI0 as the trigger, and reading out the two analog channels.  I'd like to add a second digital input through the other PFI so I can simply test if something is on or off (already a digital signal).  So, when PFI0 triggers, it digitizes the two inputs and reads whether or not PFI1 is on or off (no timing necessary).  Is there a trick to get this done?

Thanks,

Karl 

[nayer]

Hello Karl,

Since the PFI lines are generally used as triggers, we cannot read a PFI line unless you are specifically triggering off it. What you could do is as soon as you receive a trigger you can export a trigger of PFI1 which you could connect to one input of an external AND gate and second one is the signal you want to monitor. or can use another DIO DAQ device like USB-6501 to monitor the status of external digital signal. 

Good Luck

NI-khil