7 Customer Service
7.5 Camera Activity Logging
The camera support libraries (camera DLLs) used by DaVis have a
built-in logging function which might be useful for camera activity
monitoring and debugging. If you experience problems with camera
behavior and contact LaVision support, you may be asked to generate
a log file during camera operation and send it by email.
You can use the camera activity logging by choosing the appropriate item
in the DaVis Help menus. Open the following modal dialog window
which serves for starting and stopping the logging function, specifying
logging options and viewing the resulting log output. If you create a
lsf-service file after camera logging (see 7.2), the camera log data will be
included.
In the top line of the dialog the Current logging status is displayed. If
this is not the ’OFF’ status, a number is displayed. Using the following
radio buttons you can choose if you want to Log each CL function call +
programmed output, i.e. the complete communication between
DaVis and the camera DLL, or to Log only programmed output
(PrintLog).
Programmed output lines are the result of calls to the ’PrintLog’ function
inside the DLL or, from DaVis, results of a CL function call like
DevSetStrPar(DEV_CAMERA_1, CAMPAR_DEBUG, ’output string’). If you
choose Log each DLL function call, each Get() and Set() function call
from DaVis to the DLL is logged together with the value of the
parameter passed respectively the result returned by the DLL.
Using the four checkboxes you can specify the output format and writing
mode:
Show execution times (differences): If this option is checked, each
output line is preceded by the time passed since the preceding
output line (microseconds).
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