User guide

Signal Capture
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Lecture Recorder x2 User Guide
The table below discusses all options found on the Frame Grabber Adjustment page.
Table 4 Frame Grabber Adjustment Options
Use signal from
Specify the the native colour space of the signal source, either
RGB or YUV. The following values are available:
- VGA/DVI signal (RGB) – default setting
- Component signal (YCrCb)
Interval between
VGA signal
autoadjustments,
sec
Change the interval between automatic adjustments if you
want them to occur more or less often. To suspend automatic
adjustments, enter 0.
Vertical shift
Configure the vertical shift to offset the captured image’s
position. For example, a captured image that is shifted slightly
downward or vertically can be corrected with minor
adjustments to the vertical shift settings.
Increasing or decreasing the value entered in the Vertical Shift
field shifts the image up or down.
Horizontal shift
Configure the horizontal shift to offset the captured image’s
position. For example, a captured image that is shifted slightly
to the right or horizontally can be corrected with minor
adjustments to the horizontal shift settings.
Increasing or decreasing the value entered in the Horizontal
Shift field shifts the image to the right or left.
Phase
This setting adjusts the vertical synchronization properties of
the image. You may need to change it when there is a
repetitive distortion or blurriness on the horizontal axis of the
image. Adjust the setting in small steps until a sharper image
is displayed.
PLL adjustment
This setting is used to squeeze or stretch the image
horizontally.
Offset
Use the offset and gain controls together to optimize image
quality. Increasing the offset reduces background noise but
also reduces the overall signal.
Balance offset and gain values to achieve the best quality
image. Adjust these settings by the smallest values possible to