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			<title>Macintosh Display Cards: RGB-to-NTSC Converters</title><body class="ac-gn-current-support">
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<h1 id="main-title">Macintosh Display Cards: RGB-to-NTSC Converters</h1>
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<div id="intro-container"><div class="truncate"><div class="attr SYMPTOMS"><div class="attr TOPIC"><FONT SIZE=4> </FONT><BR>
<FONT SIZE=4> <BR>
Do you know of a device that can convert the color RGB signal (interlaced) from<BR>
the new video cards to NTSC?  Does it have the correct grounding for the sense<BR>
pins to put the Display Card 8/24 into interlace mode and let the convolution<BR>
(in 8-bit color) work?<BR>
 <BR>
</FONT></div></div> <!--  attr Symptom  --></div> <!--  truncate --></div> <!--  intro-container --><div class="clear"> </div>
 </div>   <!-- abstract end -->
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  <div class="attr SUMMARY">
RasterOps has announced an RGB-to-NTSC converter device. It is mentioned in the<BR>
RasterOps ad in the June 1990 Macworld (pages 114-115).  We have also received<BR>
a marketing flyer on this converter.  The name of the product is the RasterOps<BR>
Video Expander.<BR>
 <BR>
The sense pin issue is normally handled in the cable configuration.  This<BR>
eliminates any concern over the converter having to deal with the card<BR>
configuration.  Engineering has tested an early version of the converter with<BR>
the new cards.  It appears that the shipping converter will work with the<BR>
Macintosh Display Cards.  We have not yet had one to test.  However, the<BR>
Display Card marketing group assures us that everything will be fine.<BR>
 <BR>
Another RGB-to-NTSC converter is from Computer Video.  Their product, Video<BR>
NTSC Encoder, provides another solution for converting the High-Resolution<BR>
8-Bit Macintosh Video Cards to an NTSC output signal.  We believe this<BR>
converter box will work with the new cards.  It uses the configuration of the<BR>
cable to tell the new Macintosh Display Cards which mode to use.<BR>
 <BR>
For more details, search the Technical Info library under &quot;Computer Video&quot; and<BR>
&quot;RasterOps.&quot;<BR>
 <BR>
<BR></div>
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<div class="mod-date">Published Date: Feb 18, 2012</div>
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