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30 TV
Secondary Audio Program (SAP)
The Secondary Audio Program can be used to broadcast, for example, language translations, reading services for the visually impaired, weather forecasts, or information about a show.
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•Only available for NTSC video; for PAL or SECAM, it is called Language B.
•Not all television stations broadcast SAP.
To hear the Secondary Audio Program
Zooming and panning
You can zoom in on the video in the Display panel to enlarge a selected portion of the screen, and return your display to normal. You can also pan (move the image horizontally and vertically) in the zoomed area.
To zoom
Click within the display panel, then hold down the mouse button and draw a rectangle around the area you want to zoom.
Or
To pan in the zoomed area
Move your mouse within the zoomed area to pan horizontally or vertically.
To unzoom
, then click Unzoom.
Or click the 1:1 button in the control panel.