76 lines
1.9 KiB
HTML
76 lines
1.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
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<html>
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<head>
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<title>Forum Graphic GPS Dating station</title>
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</head>
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<body>
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<h3>Forum Graphic GPS Dating station</h3>
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<hr>
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<h4>Synopsis</h4>
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<p>Address: 127.127.37.<i>u</i><br>
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Reference ID: <tt>GPS</tt><br>
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Driver ID: <tt>GPS</tt><br>
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Parallel Port: <tt>/dev/fgclock<i>u</i></tt>
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</p>
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<h4>Description</h4>
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<p>This driver supports the Forum Graphic GPS Dating station sold by <a
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href="http://www.emr.fr/gpsclock.htm">EMR company</a>.
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<p>Unfortunately sometime FG GPS start continues reporting of the same
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date. The only way to fix this problem is GPS power cycling and ntpd
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restart after GPS power-up.
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</P>
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After Jan,10 2000 my FG GPS unit start send a wrong answer after 10:00am
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till 11:00am. It repeat hour value in result string twice. I wroite a small
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code to avoid such problem. Unfortunately I have no second FG GPS unit
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to evaluate this problem. Please let me know if your GPS has no problems
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after Y2K.
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<p>
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<h4>Monitor Data</h4>
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<p>Each timecode is written to the <tt>clockstats</tt> file in the format
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<tt>YYYY YD HH MI SS</tt>.</p>
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<h4>Fudge Factors</h4>
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<dl>
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<dt><tt>time1 <i>time</i></tt></dt>
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<dd>Specifies the time offset calibration factor, in seconds and fraction,
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with default 0.0.</dd>
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<dt><tt>time2 <i>time</i></tt></dt>
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<dd>Not used by this driver.</dd>
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<dt><tt>stratum <i>number</i></tt></dt>
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<dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0.
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</dd>
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<dt><tt>refid <i>string</i></tt></dt>
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<dd>Specifies the driver reference identifier, an ASCII string from one to
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four characters, with default <tt>FG</tt>.</dd>
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<dt><tt>flag1 0 | 1</tt></dt>
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<dd>Not used by this driver.</dd>
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<dt><tt>flag2 0 | 1</tt></dt>
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<dd>Not used by this driver.</dd>
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<dt><tt>flag3 0 | 1</tt></dt>
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<dd>Not used by this driver.</dd>
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<dt><tt>flag4 0 | 1</tt></dt>
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<dd>Not used by this driver.</dd>
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</dl>
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<hr>
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<address>Dmitry Smirnov (das@amt.ru)</address>
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</body>
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</html>
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