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			<title>Macintosh: Line Dropout Immunity (7/94)</title><body class="ac-gn-current-support">
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<h1 id="main-title">Macintosh: Line Dropout Immunity (7/94)</h1>
<div id="abstract">
 
<div id="intro-container"><div class="truncate"><div class="attr SYMPTOMS"><div class="attr TOPIC"><FONT SIZE=4><BR>
How long can a Macintosh system be without power? Our Macintosh IIfx is<BR>
going to be used on a ship in rough conditions.  We plan to use a battery,<BR>
which sometimes switches power.<BR>
<BR>
</FONT></div></div> <!--  attr Symptom  --></div> <!--  truncate --></div> <!--  intro-container --><div class="clear"> </div>
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  <div class="attr SUMMARY">
Generally, the line dropout immunity for most Macintosh computers is 20<BR>
ms, including the AC adaptor for the Macintosh PowerBooks.  The Macintosh<BR>
Plus has a dropout immunity of 16 ms.<BR>
<BR>
This information is available in the &quot;Guide to Macintosh Family Hardware&quot;,<BR>
ISBN 0-201-52405-8.<BR>
<BR>
Note: We do not have the line dropout immunity for the Macintosh Quadra<BR>
computers at this time.<BR>
<BR>
Article Change History: <BR>
18 Jul 1994 - Reviewed for technical accuracy. <BR>
31 Mar 1994 - Updated formatting.<BR>
09 Jul 1992 - Reviewed for technical accuracy<BR></div>
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<div class="mod-date">Published Date: Feb 20, 2012</div>
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