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diff --git a/contrib/ntp/html/drivers/driver34.html b/contrib/ntp/html/drivers/driver34.html new file mode 100644 index 0000000..dc37f3b --- /dev/null +++ b/contrib/ntp/html/drivers/driver34.html @@ -0,0 +1,88 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> + +<html> + + <head> + <meta http-equiv="Content-Type" content="text/html; charset=iso8859-1"> + <title>Ultralink Clock</title> + <link href="../scripts/style.css" type="text/css" rel="stylesheet"> + </head> + + <body> + <h3>Ultralink Clock</h3> + <hr> + <h4>Synopsis</h4> + Address: 127.127.34.<i>u</i><br> + Reference ID: <tt>WWVB</tt><br> + Driver ID: <tt>ULINK</tt><br> + Serial Port: <tt>/dev/wwvb<i>u</i></tt>; 9600 bps, 8-bits, no parity<br> + <br> + Features: <tt>(none)</tt> + <h4>Description</h4> + <p>This driver supports the Ultralink Model 320 RS-232 powered WWVB receiver. PDF specs available on <a href="http://www.ulio.com">www.ulio.com</a>. This driver also supports the Model 330,331,332 decoders in both polled or continous time code mode. Leap second and quality are supported.</p> + <p>Most of this code is originally from refclock_wwvb.c with thanks. Any mistakes are mine. Any improvements are welcome.</p> + <hr> + <pre> + The Model 320 timecode format is: + + <cr><lf>SQRYYYYDDD+HH:MM:SS.mmLT<cr> + + where: + + S = 'S' -- sync'd in last hour, '0'-'9' - hours x 10 since last update, else '?' + Q = Number of correlating time-frames, from 0 to 5 + R = 'R' -- reception in progress, 'N' -- Noisy reception, ' ' -- standby mode + YYYY = year from 1990 to 2089 + DDD = current day from 1 to 366 + + = '+' if current year is a leap year, else ' ' + HH = UTC hour 0 to 23 + MM = Minutes of current hour from 0 to 59 + SS = Seconds of current minute from 0 to 59 + mm = 10's milliseconds of the current second from 00 to 99 + L = Leap second pending at end of month -- 'I' = inset, 'D'=delete + T = DST <-> STD transition indicators + </pre> + <p>Note that this driver does not do anything with the T flag.</p> + <p>The M320 also has a 'U' command which returns UT1 correction information. It is not used in this driver.</p> + <hr> + <pre> + The Model 33x timecode format is: + + S9+D 00 YYYY+DDDUTCS HH:MM:SSl+5 + + Where: + + S = sync indicator S insync N not in sync + the sync flag is WWVB decoder sync + nothing to do with time being correct + 9+ = signal level 0 thru 9+ If over 9 indicated as 9+ + D = data bit ( fun to watch but useless ;-) + space + 00 = hours since last GOOD WWVB frame sync + space + YYYY = current year + + = leap year indicator + DDD = day of year + UTC = timezone (always UTC) + S = daylight savings indicator + space + HH = hours + : = This is the REAL in sync indicator (: = insync) + MM = minutes + : = : = in sync ? = NOT in sync + SS = seconds + L = leap second flag + +5 = UT1 correction (sign + digit )) + </pre> + <p>This driver ignores UT1 correction,DST indicator,Leap year and signal level.</p> + <hr> + <h4>Fudge factors</h4> + <p>flag1 polling enable (1=poll 0=no poll)</p> + <hr> + <address><a href="mailto:dstrout@linuxfoundary.com">mail</a></address> + <!-- hhmts start -->Last modified: Tue Sep 14 05:53:08 EDT 1999 <!-- hhmts end --> + <hr> + <script type="text/javascript" language="javascript" src="../scripts/footer.txt"></script> + </body> + +</html>
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