Epiphan VGADVI Recorder - Manual (Page 53)

VGADVI Recorder User Guide 2-2 Configure a video source
Value Description
PLL adjustment Changing the value adjusts the horizontal resolution of the image. Adjust the
value using small increments until the image is sharper. The value ranges from 0-
999 to 999.
Offset The Offset and Gain parameters function as contrast control for an image. The
Offset controls the darker parts of the image and the gain controls the bright
parts of the image. Adjust both values to optimize image quality. Adjust the
values using small increments until the image is sharper. If you set Offset to a
high value, set a high value for the gain to balance the two.
Gain The Gain and Offset parameters function as contrast control for an image. The
Gain controls the bright parts of the image and Offset controls the darker parts
of the image. Adjust both values to optimize image quality. Adjust the values
using small increments until the image is sharper. If you set Offset to a high
value, set a high value for the Gain to balance the two.
Aspect Ratio Sets the aspect ratio of the captured image. The default is 4:3. Set the value to
Wide mode when capturing images that have a wide aspect ratio. Using the
incorrect setting causes the image to be distorted or stretched.
HSync threshold Adjust horizontal sync detection.
VSync threshold Adjust vertical sync detection.
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