19c2daa00SOllivier Robert<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 29c2daa00SOllivier Robert 39c2daa00SOllivier Robert<html> 49c2daa00SOllivier Robert 59c2daa00SOllivier Robert <head> 69c2daa00SOllivier Robert <meta http-equiv="Content-Type" content="text/html; charset=iso8859-1"> 79c2daa00SOllivier Robert <title>Ultralink Clock</title> 89c2daa00SOllivier Robert <link href="../scripts/style.css" type="text/css" rel="stylesheet"> 99c2daa00SOllivier Robert </head> 109c2daa00SOllivier Robert 119c2daa00SOllivier Robert <body> 129c2daa00SOllivier Robert <h3>Ultralink Clock</h3> 139c2daa00SOllivier Robert <hr> 149c2daa00SOllivier Robert <h4>Synopsis</h4> 159c2daa00SOllivier Robert Address: 127.127.34.<i>u</i><br> 169c2daa00SOllivier Robert Reference ID: <tt>WWVB</tt><br> 179c2daa00SOllivier Robert Driver ID: <tt>ULINK</tt><br> 189c2daa00SOllivier Robert Serial Port: <tt>/dev/wwvb<i>u</i></tt>; 9600 bps, 8-bits, no parity<br> 199c2daa00SOllivier Robert <br> 209c2daa00SOllivier Robert Features: <tt>(none)</tt> 219c2daa00SOllivier Robert <h4>Description</h4> 229c2daa00SOllivier Robert <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> 239c2daa00SOllivier Robert <p>Most of this code is originally from refclock_wwvb.c with thanks. Any mistakes are mine. Any improvements are welcome.</p> 249c2daa00SOllivier Robert <hr> 259c2daa00SOllivier Robert <pre> 269c2daa00SOllivier Robert The Model 320 timecode format is: 279c2daa00SOllivier Robert 289c2daa00SOllivier Robert <cr><lf>SQRYYYYDDD+HH:MM:SS.mmLT<cr> 299c2daa00SOllivier Robert 309c2daa00SOllivier Robert where: 319c2daa00SOllivier Robert 329c2daa00SOllivier Robert S = 'S' -- sync'd in last hour, '0'-'9' - hours x 10 since last update, else '?' 339c2daa00SOllivier Robert Q = Number of correlating time-frames, from 0 to 5 349c2daa00SOllivier Robert R = 'R' -- reception in progress, 'N' -- Noisy reception, ' ' -- standby mode 359c2daa00SOllivier Robert YYYY = year from 1990 to 2089 369c2daa00SOllivier Robert DDD = current day from 1 to 366 379c2daa00SOllivier Robert + = '+' if current year is a leap year, else ' ' 389c2daa00SOllivier Robert HH = UTC hour 0 to 23 399c2daa00SOllivier Robert MM = Minutes of current hour from 0 to 59 409c2daa00SOllivier Robert SS = Seconds of current minute from 0 to 59 419c2daa00SOllivier Robert mm = 10's milliseconds of the current second from 00 to 99 429c2daa00SOllivier Robert L = Leap second pending at end of month -- 'I' = inset, 'D'=delete 439c2daa00SOllivier Robert T = DST <-> STD transition indicators 449c2daa00SOllivier Robert </pre> 459c2daa00SOllivier Robert <p>Note that this driver does not do anything with the T flag.</p> 469c2daa00SOllivier Robert <p>The M320 also has a 'U' command which returns UT1 correction information. It is not used in this driver.</p> 479c2daa00SOllivier Robert <hr> 489c2daa00SOllivier Robert <pre> 499c2daa00SOllivier Robert The Model 33x timecode format is: 509c2daa00SOllivier Robert 519c2daa00SOllivier Robert S9+D 00 YYYY+DDDUTCS HH:MM:SSl+5 529c2daa00SOllivier Robert 539c2daa00SOllivier Robert Where: 549c2daa00SOllivier Robert 559c2daa00SOllivier Robert S = sync indicator S insync N not in sync 569c2daa00SOllivier Robert the sync flag is WWVB decoder sync 579c2daa00SOllivier Robert nothing to do with time being correct 589c2daa00SOllivier Robert 9+ = signal level 0 thru 9+ If over 9 indicated as 9+ 599c2daa00SOllivier Robert D = data bit ( fun to watch but useless ;-) 609c2daa00SOllivier Robert space 619c2daa00SOllivier Robert 00 = hours since last GOOD WWVB frame sync 629c2daa00SOllivier Robert space 639c2daa00SOllivier Robert YYYY = current year 649c2daa00SOllivier Robert + = leap year indicator 659c2daa00SOllivier Robert DDD = day of year 669c2daa00SOllivier Robert UTC = timezone (always UTC) 679c2daa00SOllivier Robert S = daylight savings indicator 689c2daa00SOllivier Robert space 699c2daa00SOllivier Robert HH = hours 709c2daa00SOllivier Robert : = This is the REAL in sync indicator (: = insync) 719c2daa00SOllivier Robert MM = minutes 729c2daa00SOllivier Robert : = : = in sync ? = NOT in sync 739c2daa00SOllivier Robert SS = seconds 749c2daa00SOllivier Robert L = leap second flag 759c2daa00SOllivier Robert +5 = UT1 correction (sign + digit )) 769c2daa00SOllivier Robert </pre> 779c2daa00SOllivier Robert <p>This driver ignores UT1 correction,DST indicator,Leap year and signal level.</p> 789c2daa00SOllivier Robert <hr> 799c2daa00SOllivier Robert <h4>Fudge factors</h4> 809c2daa00SOllivier Robert <p>flag1 polling enable (1=poll 0=no poll)</p> 819c2daa00SOllivier Robert <hr> 829c2daa00SOllivier Robert <address><a href="mailto:dstrout@linuxfoundary.com">mail</a></address> 839c2daa00SOllivier Robert <!-- hhmts start -->Last modified: Tue Sep 14 05:53:08 EDT 1999 <!-- hhmts end --> 849c2daa00SOllivier Robert <hr> 859c2daa00SOllivier Robert <script type="text/javascript" language="javascript" src="../scripts/footer.txt"></script> 869c2daa00SOllivier Robert </body> 879c2daa00SOllivier Robert 889c2daa00SOllivier Robert</html>