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7700 MultiFrame Manual
7710ARC Series - SD Aspect Ratio Converter
5.
CARD EDGE CONTROLS
The ARC Series modules are equipped with a toggle switch and a push button to allow the user to select
various functions and navigate through the menu system (refer to Figure 5-1).
Toggle
Switch
6.
OPERATION OVERVIEW
This section provides some concepts and understanding to take advantage of the ARC Series modules.
6.1.
QUICK CONFIGURATION
The 7710ARC has been designed so that the most common aspect ratio conversions are available as
aspect ratio presets. To make use of these presets, set the Scaler Mode menu item on the ARC Control
menu to aspect ratio and select the appropriate preset from the AR menu (refer to section 7.4.1.1).
Choosing one of the quick select presets will adjust the remaining menus to the correct settings in order to
accomplish the desired conversion.
6.2.
DETAILED CONFIGURATION OVERVIEW
For additional control of the conversion process there are two methods of control provided (set using the
Scaler mode menu item on the ARC Control menu). The first method, called Aspect Ratio mode, controls
the conversion process by selecting the input and output aspect ratios. See section 6.2.1 for a general
discussion of Aspect Ratio mode concepts and section 7.4.1 for information on how to use the specific
controls. The second method, called Manual mode, controls the conversion process by specifying the
pixels and lines of the input and output images. See section 6.2.4 for a general discussion of Manual
mode concepts and section 7.4.2 for information on how to use the specific controls.
6.2.1. Aspect Ratio Mode – General Concepts
For many applications you can avoid the manual calculations necessary to prevent the image from
distorting during the conversion process by configuring the aspect ratio converter in Aspect Ratio mode.
When the aspect ratio converter is in this mode, the pixel aspect ratio, and image aspect ratio are taken
into account while calculating where the input and output images are located.
There are a few terms that need to be understood in order to properly control the aspect ratio converter
while it is in Aspect Ratio mode. These terms are Source frame Aspect Ratio, Image Aspect Ratio,
Cropping, Stretching and Filling.
7710ARC-10
Push
Button
Figure 5-1: Card Edge Controls
Revision 1.1
7710ARC
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