IDEA Auto-SYNC with RGB/VGA/DVI Analog Video
TIMS MVP
™
Setup and Configuration Guide 147
Changing Pixel Adjustments Settings
The
Pixel Adjustments
setting tab is used for aligning / adjusting the frame grabbers sync
circuitry to the incoming video signal.
Figure
52: Pixel
Adjustment video settings
Important:
When running Auto-SYNC, it is recommended that you use a video image that
’s
representative of the image being captured.
Option
Value
Description
Horizontal Total
1688 pixels
Total number of pixels in one video scan-line.
Horizontal
Frequency
63981 Hz
Number of scan lines transmitted per second in
the video signal.
Phase Delay
9.5 nSec
Phase of the sampling clock.
Fine Adjust
2
Sets fine phase adjustment value for
AccuStream boards.
HTotal:
Sets the maximum permitted overall
image width.
Increasing the HTotal widens the image,
increasing the aspect ratio. Decreasing
the Htotal value shrinks the overall image
width thus decreasing the aspect ratio.
Horizontal
Frequency:
The number of scan lines transmitted per
second in the video signal.
Not usually user adjustable unless
deliberately sub sampling the incoming
video.
Phase
delay:
Specifies the phase of the sampling clock,
which is a delay relative to horizontal
sync. This allows the sampling operation
to be optimally placed relative to the
pixel wave form.
Use to eliminate shadows or blurriness in
text or vertical lines in the image.
Auto..:
The "Auto..." button attempts to
automatically recalculate the optimal
phase delay setting. If the board supports
fine phase adjustment, the phase
algorithm will be ignored and the fine
phase adjustment value will be set
instead.
Auto-SYNC will prompt the user to select
a phase determination algorithm then
begin to scan.
