How to use PCIe 6351 to trigger PCIe 1427?

[Kyle_C]

Hi all,

   I am writing an imaging application that needs to use the PCIe 6351 (DAQmx) to trigger PCIe 1427 which is an IMAQ board. I have browsed through the DAQmx and there is a way to route a PFI line to the RTSI. And there is a RTSI port on the PCIe 1427 as well. However, I have read that PCIe 1427 supports only external trigger. My question is how can I route one of the external trigger of PCIe1427 to the RTSI port?

  A further question would be, since I am sending a specific analog waveform out of the PCIe 6351, I want to have a digital pulse from the PCIe6251 at a specific point of the waveform sent via the RTSI to trigger the PCIe 1427, should I write a separate array to the PFI line routed to the RTSI? 

  Thank you very much!

- Kyle

[tcap]

Hello Kyle,

According to http://www.ni.com/pdf/manuals/371816a.pdf#page=16, the PCIe-1427 does support triggering over RTSI. You will need to output the DAQmx Trigger signal to a RTSI port. On the vision side, I recommend looking at the Triggered Snap example. This will show how to configure the trigger to look at the RTSI line.

Regards,

[Kyle_C]

Hi Thomas,

  Thanks for the clarifications. I was confused because of the chart in this page 

http://digital.ni.com/public.nsf/allkb/49A701F932DA43818625716A001B4D1B

So according to you, I can program (in C) 1427 just like the others right?

And for the 6351, the way to route is using  DAQmxConnectTerms , right? So whatever the PFI send out will also happen at the RTSI port.

Thanks for your help!

- Kyle

[tcap]

Hello Kyle,

That article confused me for a while too.  I think this helps clears up what a CC pin does:

http://digital.ni.com/public.nsf/allkb/38E46AE6989321EA8625799F0061832B

The original article specifically indicates routing the RTSI lines to the CC pins in the CameraLink Connector is impossible.  This is more or less allowing a feed through from the RTSI lines to the camera. From what I understood, you want to trigger the 1427 from the RTSI Line.  This can be done through configuring the trigger to look at the right RTSI Line.

If you want the camera to trigger from the DAQ directly, you will need to connect the Trigger line from the output of the DAQ to the input of the 1427. (not through RTSI)

From the DAQmx side, you will want to use the Connect Terminals or Export Signal. More information on these be found:http://digital.ni.com/public.nsf/allkb/0BE7984A4C6C74D586256D350058A3C2

You will want to output the trigger signal such as a PFI Line, Reference Trigger, etc.  You can check the available routes in MAX>Devices and Interfaces>The 6351>Device Routes.

Regards,