Trouble-Shooting
PHYTEC Messtechnik GmbH 2008 L-720e_0
145
The lower edge of the image is missing/no image is digitized
The vertical image size was chosen too large.
It was not recognized, that starting from a line number higher
than 288 lines 288 (PAL) or 262 (NTSC), a whole frame must
be used.
The colors are not presented properly.
The values
hpos
and
hsize
must be even, in order that the color
decoding works properly.
In the user program: You mixed up Cr/Cb .
Did you select the correct color format?
The chroma gain registers were changed.
Please pay attention, that for a correct Hue setting the U- and
V-component must be identical in respect to their
percentage
value. But the values of the
registers
are different!
After a standby of the system the pciGrabber-4x4 lost the
functional capability.
The pciGrabber-4x4 does not support the standby except for the
use of a mainboard which does not power down the 3.3 Volt
supply on the PCI Express-bus during a standby. You must
reboot the system if the 3.3 Volt power down during the standby.
During continuous grabbing the image jumps one line up/down.
The parity of the field is neglected. Pay attention in order to
demand always the same field. The memory region for the even
and odd image should not be the same!
Note:
The mismatch is actually a half line, therefore the mismatch can
not be compensated by displacing one line.
The video source delivers no proper signal.
Switching channels between two cameras occurs too quickly
