55 lines
2.3 KiB
HTML
55 lines
2.3 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
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<title>Forum Graphic GPS Dating station</title>
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<link href="scripts/style.css" type="text/css" rel="stylesheet">
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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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<p>Last update:
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<!-- #BeginDate format:En2m -->21-Oct-2010 23:44<!-- #EndDate -->
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UTC</p>
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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></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 href="http://www.emr.fr/gpsclock.html">EMR company</a>.</p>
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<p>Unfortunately sometime FG GPS start continues reporting of the same date. The only way to fix this problem is GPS power cycling and ntpd restart after GPS power-up.</p>
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<p>After Jan,10 2000 my FG GPS unit start send a wrong answer after 10:00am till 11:00am. It repeat hour value in result string twice. I wroite a small code to avoid such problem. Unfortunately I have no second FG GPS unit to evaluate this problem. Please let me know if your GPS has no problems after Y2K.</p>
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<p></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 <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>
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<dd>Specifies the time offset calibration factor, in seconds and fraction, with default 0.0.
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<dt><tt>time2 <i>time</i></tt>
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<dd>Not used by this driver.
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<dt><tt>stratum <i>number</i></tt>
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<dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0.
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<dt><tt>refid <i>string</i></tt>
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<dd>Specifies the driver reference identifier, an ASCII string from one to four characters, with default <tt>FG</tt>.
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<dt><tt>flag1 0 | 1</tt>
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<dd>Not used by this driver.
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<dt><tt>flag2 0 | 1</tt>
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<dd>Not used by this driver.
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<dt><tt>flag3 0 | 1</tt>
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<dd>Not used by this driver.
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<dt><tt>flag4 0 | 1</tt>
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<dd>Not used by this driver.
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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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<hr>
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<script type="text/javascript" language="javascript" src="scripts/footer.txt"></script>
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</body>
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</html>
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