/contrib/ntp/html/drivers/driver37.html

https://bitbucket.org/freebsd/freebsd-head/ · HTML · 51 lines · 47 code · 4 blank · 0 comment · 0 complexity · bc1b3cc10e36ed7295287042e671c69d MD5 · raw file

  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
  2. <html>
  3. <head>
  4. <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
  5. <title>Forum Graphic GPS Dating station</title>
  6. <link href="scripts/style.css" type="text/css" rel="stylesheet">
  7. </head>
  8. <body>
  9. <h3>Forum Graphic GPS Dating station</h3>
  10. <hr>
  11. <h4>Synopsis</h4>
  12. <p>Address: 127.127.37.<i>u</i><br>
  13. Reference ID: <tt>GPS</tt><br>
  14. Driver ID: <tt>GPS</tt><br>
  15. Parallel Port: <tt>/dev/fgclock<i>u</i></tt></p>
  16. <h4>Description</h4>
  17. <p>This driver supports the Forum Graphic GPS Dating station sold by <a href="http://www.emr.fr/gpsclock.html">EMR company</a>.</p>
  18. <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>
  19. <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>
  20. <p></p>
  21. <h4>Monitor Data</h4>
  22. <p>Each timecode is written to the <tt>clockstats</tt> file in the format <tt>YYYY YD HH MI SS</tt>.</p>
  23. <h4>Fudge Factors</h4>
  24. <dl>
  25. <dt><tt>time1 <i>time</i></tt>
  26. <dd>Specifies the time offset calibration factor, in seconds and fraction, with default 0.0.
  27. <dt><tt>time2 <i>time</i></tt>
  28. <dd>Not used by this driver.
  29. <dt><tt>stratum <i>number</i></tt>
  30. <dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0.
  31. <dt><tt>refid <i>string</i></tt>
  32. <dd>Specifies the driver reference identifier, an ASCII string from one to four characters, with default <tt>FG</tt>.
  33. <dt><tt>flag1 0 | 1</tt>
  34. <dd>Not used by this driver.
  35. <dt><tt>flag2 0 | 1</tt>
  36. <dd>Not used by this driver.
  37. <dt><tt>flag3 0 | 1</tt>
  38. <dd>Not used by this driver.
  39. <dt><tt>flag4 0 | 1</tt>
  40. <dd>Not used by this driver.
  41. </dl>
  42. <hr>
  43. <address>Dmitry Smirnov (das@amt.ru)</address>
  44. <hr>
  45. <script type="text/javascript" language="javascript" src="scripts/footer.txt"></script>
  46. </body>
  47. </html>