imgGrabSetup takes long time(700ms) with NI-1428 and pulnix TM-6710 CL CCD camera

[superljh]

after stop acquisition, controls CCD (shutter, gain, exposure time setting), and then imgGrabSetup takes long time(about 700ms) with NI-1428 and pulnix 6710 CL CCD camera.

but imgGrabSetup took about 50ms with NI-1422 and pulnix TM 6710 RS-422 CCD camera.

What is the problem ?

NI-IMAQ 3.1.1

OS : windows 2000 professional.

HW : pentium 4 2.0GHz, memory 512MB

[Lorne H.]

superljh,

A likely cause for the time difference is that the NI-1428 is a Camera Link frame grabber board, which means that it communicates with it's camera serially to change settings on the camera.  The "IMAQ Grab Setup" is probably communicating with the camera serially while the camera you are using with the PCI-1422 is not donig this.  This serial communication would take more time.

There might be other causes for this slow down, but since you only need to run the "IMAQ Grab Setup" subvi once,  a long delay (1sec) with this VI should not cause any problems unless you are repreatidly running the VI.

Lorne Hengst
Application Engineer
National Instruments