Belden Grass Valley XVP-3901-DPI, Руководство по установке и эксплуатации, Страница: 32 / 87

GUIDE TO INSTALLATION AND OPERATION
26 | XVP-3901-DPI
Input: Tilt
Once a smaller window has been established by cropping the input signal, it can be moved vertically ( Tilt , expressed
in lines) within the original image to place the desired portion of the image in view. By default, a Center check box
beneath the Tilt scroll box forces the cropping window to be centered on the input window. When it is checked, the
necessary Tilt value will be calculated and displayed in the Tilt data window. You cannot tilt if the cropping value is
zero.
Input: Pan
Once this smaller window is established, it can be moved horizontally ( Pan , expressed in pixels) within the original
image to place the desired portion of the image in view. A Center check box beneath the Pan scroll box forces the
cropping window to be centered on the input window. When checked, the necessary Pan value will be calculated and
displayed in the data window. You cannot Pan if the cropping value is zero.
5.4.1.2 Output sub-section
Output: Side Panels
This scrollable data entry box is used to shrink the width of the image so that the output image has blanked areas on
each side of the displayed picture, which occupy the indicated percentage of the screen width. These areas are
symmetric about the center, so a setting of 25% side panels would show a bar 12.5% of the screen width on each
side of the image. 25% is the maximum value; entering a smaller value reduces the width of the side panels, but crops
the image top and bottom. This control is disabled when the input is 16:9.
Output: Anamorphism
This control box allows the output image to be resized asymmetrically. Anamorphism is expressed in percent, where
positive values indicate an increase in width with respect to height, and negative values a decrease in width with
respect to height.
Output: Position
This pulldown allows the positioning of the output picture when side panels are in use. The picture can be moved
totally to the left, centered or totally to the right. This control is not available in Auto AFD mode or Forced AFD mode.
The picture will be centered by default when an ARC Preset is selected.
Locking
controls
Represented by padlock icons, these buttons allow the V Crop , H Crop, Side Panels and Anamorphism controls to be
“locked”. When a control is locked, user access to that control is disabled. Changes to unlocked controls will not affect
the data values of locked controls. There is some interactivity within the locking function, as follows:
•
If either V Crop or H Crop is locked, Anamorphism is unlocked.
•
If either Side Panels or Anamorphism is locked, the other is unlocked, along with V Crop and H Crop .
5.4.1.3 Presets sub-section
Note that limited presets are available as input video format is limited to HD/3D in the XVP-3901-DPI which the same
aspect ratio than the video output. You can selected between
Bypass or Custom .
5.4.1.4 Masks sub-section
Mask: Horizontal and Vertical
Sometimes with aspect ratio conversion, some of the edges of the original image are exposed in the output signal.
Often, there will be artifacts in the source along these edges, extending for several lines vertically or several pixels
horizontally after conversions. Masks are adjustable “curtains” which can be used to frame the output image, covering
up the edge artifacts and leaving a clean transition from image to mask.