Dalsa PC2-Comp Express OC-P2EM-COMP0, User Manual

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PC2-Comp Express Sapera LT
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51
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Configuration of line/frame trigger parameters such as source (internal via the frame grabber
/external via some outside event), electrical format (TTL, LVDS, OPTO-isolated), and signal
active edge or level characterization.
Camera Interfacing Check List
Before undertaking the task of interfacing a camera from scratch using CamExpert:
•
Confirm that DALSA has not already published an application note with camera files
[
http://www.imaging.com/camsearch ].
•
Confirm that Sapera does not already have a .cca file for your camera installed on your hard
disk. If there is a .cca file supplied with Sapera, then use CamExpert to automatically generate
the .ccf file with default parameter values matching the frame grabber capabilities.
•
Check if the Sapera installation has a similar type of camera file. A similar .cca file can be
loaded into CamExpert where it is modified to match timing and operating parameters for
your camera and then save them as Camera Configuration files (.ccf), or as a new .cca & .cvi
camera file pair for applications built with Sapera 4.2 or earlier.
•
Finally, if your camera type has never been interfaced, run CamExpert after installing Sapera
and the acquisition device driver, select the board acquisition server, and enter the camera
parameters.
A Note about Cameras
Many cameras have jumpers or a serial port to control their internal configuration. Make certain that
they match your camera configuration file.
A Note on Analog Camera Timing Relationships
For analog cameras, the following formulas show the relationship between the PCLK parameter and
the Horizontal and Vertical total. These values must be accurate if the acquisition board drives the
synchronization signals to the camera (board is in Master Mode).
•
The HS and VS signal frequencies are:
total
freq freq
H *
PCLK
1
HS
1
=
total
freq freq
V *
HS
1
VS
1
=