embedaddon/ntp/html/drivers/driver37.html - view

File: [ELWIX - Embedded LightWeight unIX -] / embedaddon / ntp / html / drivers / driver37.html
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs - revision graph
Tue May 29 12:08:38 2012 UTC (12 years, 7 months ago) by misho
Branches: ntp, MAIN
CVS tags: v4_2_6p5p0, v4_2_6p5, HEAD

ntp 4.2.6p5

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="content-type" content="text/html;charset=iso-8859-1"> <title>Forum Graphic GPS Dating station</title> <link href="scripts/style.css" type="text/css" rel="stylesheet"> </head> <body> <h3>Forum Graphic GPS Dating station</h3> <hr> <h4>Synopsis</h4> <p>Address: 127.127.37.<i>u</i><br> Reference ID: <tt>GPS</tt><br> Driver ID: <tt>GPS</tt><br> Parallel Port: <tt>/dev/fgclock<i>u</i></tt></p> <h4>Description</h4> <p>This driver supports the Forum Graphic GPS Dating station sold by <a href="http://www.emr.fr/gpsclock.html">EMR company</a>.</p> <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> <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> <p></p> <h4>Monitor Data</h4> <p>Each timecode is written to the <tt>clockstats</tt> file in the format <tt>YYYY YD HH MI SS</tt>.</p> <h4>Fudge Factors</h4> <dl> <dt><tt>time1 <i>time</i></tt> <dd>Specifies the time offset calibration factor, in seconds and fraction, with default 0.0. <dt><tt>time2 <i>time</i></tt> <dd>Not used by this driver. <dt><tt>stratum <i>number</i></tt> <dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0. <dt><tt>refid <i>string</i></tt> <dd>Specifies the driver reference identifier, an ASCII string from one to four characters, with default <tt>FG</tt>. <dt><tt>flag1 0 | 1</tt> <dd>Not used by this driver. <dt><tt>flag2 0 | 1</tt> <dd>Not used by this driver. <dt><tt>flag3 0 | 1</tt> <dd>Not used by this driver. <dt><tt>flag4 0 | 1</tt> <dd>Not used by this driver. </dl> <hr> <address>Dmitry Smirnov (das@amt.ru)</address> <hr> <script type="text/javascript" language="javascript" src="scripts/footer.txt"></script> </body> </html>