Thread: Pal - Ntsc
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Old 30 June 2012, 08:52   #4
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Join Date: May 2010
Location: Helsinki, Finland
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Ordinarily the Amiga output is RGB (separate red, green and blue signals unlike composite or s-video) at about a 15kHz scan rate, which is a traditional video/tv signal. VGA is also RGB, but the scan rate is higher, about double, and therefore many/most modern monitors only accept 31kHz or higher. A scandoubler, in the most basic sense, doubles the scan rate so that these monitors can be used.

The top of the line Amiga-specific scandoubler available at the moment is the Indivision series, which is really more than just a scandoubler, it offers selectable output frequencies and has many other features. It also takes care of the PAL-NTSC issue, since all screen modes can be converted to VGA (or DVI) legal. Plenty of threads about the devices here on the forum if you search.
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