Dalsa CA-D1/NI1422 frame rate

[Burque]

I'm reading sequences of frames from a Dalsa CA-D1-0128A with NI 1422 frame grabber.  No matter what frame rate I set, every other frame is at maximum (i.e., 838 fps) frame rate.  I've tried different CA-D1's, so it's not a problem with the particular camera.

Has anyone seen this before?  Is it some problem with the camera file?

Thanks.

[Eric_R]

Hi Burque

Are you using the camera file from our website? I see on the site that it can only run up to 736Hz. What are you using to gather information regarding the frame rate?

[Burque]

Hi, Eric.

The camera file did come from the NI site.  The User's Manual gives a maximum frame rate of 838 fps for the 128X128 sensor.  (At the moment, I'm trying to run at only 10 Hz.)

Thanks for your interest.

 Ken

[Eric_R]

Hi Ken

Are you seeing this framerate jump in Measurement and Automation Explorer, LabVIEW or other software? What are you using to acquire your images from the frame grabber?

[Burque]

Hi, Eric.

 I hope you had a pleasant holiday/long weekend. 

A LabVIEW vi (attached) collects the frames.  I certainly have not discounted the possibility that it is responsible for this problem.

Thanks again.

Ken

[Eric_R]

Hi Ken

I don't see anything in your code that leads me to believe that this would be the culprit for why you may see a frame jump in between frames. Is this issue specific to the sequence VI? Try using a basic HL Grab example under the NI Example Finder>> Hardware Input and Output >> IMAQ >> High-Level>> HL Grab.vi. This should indicate your frames per second on the front panel.