GRASS VALLEY 8995DNC -, Instruction Manual

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8995UPC/DNC/UDX — Instruction Manual 73
Configuration
Aspect Ratio Web Page
Use
this
link
Use the Aspect Ratio web page to set the desired aspect ratio mode for the
output video signal. Controls are also provided for alignment, cropping,
and matte color. AFD (Active Format Description) processing control and
reporting status are also provided for the SDI input and SDI output.
Note It is important to understand the difference in aspect ratio control behavior
between an input signal without AFD or with AFD disabled and a signal with
AFD information present. Refer to
Aspect Ratio Controls on page 30 for an
overview.
The web page example in Figure 45 on page 75 shows an input signal
without AFD information.
Auto
mode is included on this web page but is
only applicable for signals reporting AFD. Refer to Figure 46 on page 76 for
an example of an input signal with AFD present and disabled (note
Auto
mode will be removed).
When AFD coded information is present on the input, the aspect ratio con-
trols will operate based on a different set of programmed software tables to
produce an output coded frame that meets the SMPTE AFD standards.
Refer to the Appendix,
Active Format Description on page 117 , for a detailed
overview of AFD and how to use the aspect ratio controls for signals with
AFD present.
Aspect Ratio Controls
This section provides the following controls to change the aspect ratio of
the video output signal:
•
Mode
– set the desired aspect ratio for the output video. Refer to the
Aspect Ratio Controls on page 30 for an overview.
•
Alignment
– align the output video image depending on the mode
selected using one of the radio buttons.
•
Top Crop
– crop the top of the image if desired when applicable
depending on the mode selected.
•
Matte Color
– select the color of the matte blanking margins when present
in the video image. Matte colors are at 75% of color bar colors. Gray
Mattes are Gray 1– darkest to Gray 6 – lightest.
• Click the
Apply Aspect Ratio Selections
button to apply the settings or use
the
Cancel
button to return to the previous selections.
AFD Control
The AFD processing on the input signal can be disabled using the
Disable
radio button in the AFD Control section. When disabled, the AFD
Input/Output reporting on the web page will be bypassed. The Aspect
Ratio mode selection,
Auto
, will also be removed and revert to
Full Width
mode as shown in Figure 46 on page 76 .