Experimental Physics and
Industrial Control System

John Dobbins <[email protected]> · Fri, 16 Jul 2010 15:12:54 -0400

All,

I am using areaDetector (1-6) on Windows with the CMU Firewire driver, a  Flea2 camera. The IOC host is a Pentium 4, 1.8 GHz, 1 GB of RAM.

I just did a simple test of the total lag by sticking my hand in front of the camera and noting when the image changes on a remotely connected display, specifically ImageJ reading image over network via Channel Access. I was surprised to learn the total lag is about two seconds. Camera frame rate is set to 3.75 Hz. I am not sure how much delay is attributable to the network.

Can anyone provide approximate lag for their set-ups?

Does areaDetector buffer frames in a way that would produce lag? For this test I had an NDStdArray connected directly to the camera driver.

Thanks,

John Dobbins

Lab for Elementary Particle Physics
Cornell University

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System