d)Exposure and Strobe Timing Settings (Exposure control Type set to strobe)
i.Exposure type
a.Strobes set the frame grabber to generate signals at the strobe0 and strobe1 pins. These signals can be used to program the exposure or integration time of the camera.
b.Fixed Exposure means that the camera’s exposure is not adjustable. You can still program the strobes, but the exposure time features are not available.
c.Unknown Exposure is used if the exposure is unknown or not programmable. In this case, the strobes do not control the exposure and are used for other output.
d.Variable Exposure allows you to set exposure timing within a software application. The exposure time is added to the strobe duration if only 1 strobe is enabled or to the time between strobes if 2 strobes are enabled
e)Delay and Period
i.Delay and Period are part of the strobe timing. They set the delay between strobes and the period of each strobe pulse. Strobes set the frame grabber to generate signals at the Strobe#0 and Strobe#1 pins.
Setting the Video Timing (Select the Video Timing tab)
a)Enter Pixel clock speed (from the camera specification)
i.The pixel clock speed is used to set the clock generator of the frame grabber. This setting must be correct in order for the camera to work properly.
b)Set the Frame Speed.
i.If the exposure time on your camera (which should be listed in your camera manual) is longer than the minimum frame period, use Variable
c)Set the Horizontal and Vertical Sync.
i.Number clocks before valid pixels from the horizontal sync
ii.Number of lines before valid image lines from the vertical sync
iii.You most likely will find the horizontal and vertical sync information in your camera's manual or you can derive it from the timing diagram in the camera manual. You can also experiment with the numbers and see what works best.
Advanced Video Timing (Select the tab and enter the appropriate information)
a)For cameras that use Horizontal Drive, the frame grabber generates an Hdrive pulse and the camera synchronizes to it. The camera then generates an LDV (Line Data Valid) signal and sends it back to the frame grabber. The frame grabber uses the LDV to detect the starting pixel of each line from the camera.
12