Tvone C3-440, Руководство пользователя

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172 Resolution Editor Guide
3. When you have modified the Back Porch as desired, click the Update button at the
bottom of the window to commit changes and return to the Resolution Editor.
Default
0
Notes
The valid range of values is 1 to 100.
For a valid Custom Resolution, you must configure this property to a value within the valid
range. To calculate the
Vertical Front Porch , Vertical Sync Pulse and Vertical Back
Porch for an interlaced resolution, double the value of the even field. Interlacing standards
are designed this way in order to present the values in a similar format to Progressive
values.
Interlaced Custom Resolutions require that the Vertical Back Porch is twice the even field.
For example, a Vertical Back Porch of 69 gives:
Odd field: 34
Even field: 34.5
In the CORIOdiscover Resolution Editor, the Pixel Clock is not affected by any changes to
the Vertical Back Porch . However, the Vertical Frequency read-only field varies based on
Vertical Back Porch changes.