86
Sapera LT
X64-AN Quad User's Manual
CamExpert Setting
The following screen image shows the CamExpert basic timing parameter for
Vertical Active
set to
240 lines, matching the JAI CV-A11 video output. The test image grab in the display window shows
the capture of the JAI CV-A11 partial scan output from the center portion of its CCD (refer to the
camera manual for more information on all partial scan modes).
CamExpert can be configure to capture whatever number of video lines output by the camera.
Modified CamExpert settings should be saved as new camera configuration files with an appropriate
description and unique file name.
Figure 46: CamExpert: Partial Scan Live Grab
step 3: JAI CV-A11 in Edge Pre-select (trigger) Mode
The JAI CV-A11 supports a number of trigger modes. This example describes the setup for Edge Pre-
select. As described in the camera user manual, the leading edge of the trigger pulse initiates the
exposure. The trigger pulse to the camera is sent and controlled by the frame grabber to ensure correct
timing with the camera sync. In this mode, the CCD exposure time is simply controlled by the camera
setup.
The frame grabber receives an external signal connected to its external trigger input. This is typically
some asynchronous event used to signal the frame grabber to initiate and acquire 1 to n video frames
