SVS-Vistek HR Series, Manual

Page: 99 / 102

SVS-VISTEK
FAQ 99
10 FAQ
Problem Solution
Camera does not respond to light. Check if camera is set to “Mode 0“. I.e. free running with programmed
exposure ctrl. When done, check with the program “Convenient Cam“ if you
can read back any data from the camera, such as “Mode“, “type“ of CCD,
exposure time settings, etc..
If “Mode 0“ works properly, check the signals of the camera in the desired
operation mode like “Mode 1“ or “Mode 2“. In these modes, check if the
ExSync signal is present. Please note that a TTL signal must be fed to the
trigger connector if it is not provided by the frame grabber (LVDS type). The
typical signal swing must be around 5 V. Lower levels will not be detected by
the camera... If you use a TTL level signal fed to the “TB 5 connector“ check
the quality and swing. If these signals are not present or don’t have the
proper quality, the camera cannot read out any frame (Mode 1 and 2).
Beware of spikes on the signal.
Image is present but distorted. Check the camera configuration file of your frame grabber. Check number
of “front- and back porch“ pixel. Wrong numbers in configuration file can
cause sync problems. Check if your frame grabber can work with the data
rate of the camera.
Image of a color version camera looks
strange or false colors appear. If the raw image looks OK, check the camera file to see if the pixels need to
be shifted by either one pixel or one line. The image depends on the
algorithm used. If the algorithm is starting with the wrong pixel such effects
appear.
Colors rendition of a color versions not
as expected – especially when using
halogen light.
Halogen light contains strong portions of IR radiation. Use cut-off filters at
around 730 nm like “Schott KG 3“ to prevent IR radiation reaching the
CCD.
No serial communication is possible
between the camera and the PC. Use “load camera DLL” and try again.