1*2b15cb3dSCy Schubert<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 29c2daa00SOllivier Robert 39c2daa00SOllivier Robert<html> 49c2daa00SOllivier Robert 59c2daa00SOllivier Robert <head> 6*2b15cb3dSCy Schubert <meta http-equiv="content-type" content="text/html;charset=iso-8859-1"> 79c2daa00SOllivier Robert <title>Ultralink Clock</title> 8*2b15cb3dSCy Schubert <link href="scripts/style.css" type="text/css" rel="stylesheet"> 9*2b15cb3dSCy Schubert </head> 10*2b15cb3dSCy Schubert 11*2b15cb3dSCy Schubert <body> 12*2b15cb3dSCy Schubert <h3>Ultralink Clock</h3> 13*2b15cb3dSCy Schubert<p>Last update: 14*2b15cb3dSCy Schubert <!-- #BeginDate format:En2m -->31-Dec-2007 19:43<!-- #EndDate --> 15*2b15cb3dSCy Schubert UTC</p> 169c2daa00SOllivier Robert <hr> 179c2daa00SOllivier Robert <h4>Synopsis</h4> 18*2b15cb3dSCy Schubert <p>Address: 127.127.34.<i>u</i><br> 199c2daa00SOllivier Robert Reference ID: <tt>WWVB</tt><br> 209c2daa00SOllivier Robert Driver ID: <tt>ULINK</tt><br> 219c2daa00SOllivier Robert Serial Port: <tt>/dev/wwvb<i>u</i></tt>; 9600 bps, 8-bits, no parity<br> 22*2b15cb3dSCy Schubert Features: <tt>(none)</tt></p> 239c2daa00SOllivier Robert <h4>Description</h4> 24*2b15cb3dSCy Schubert <p>This driver supports the Ultralink Model 325 (replacement for Model 320) RS-232 powered WWVB receiver. PDF specs available on <a href="http://www.ulio.com/">http://www.ulio.com/</a>. This driver also supports the Model 320, 330,331,332 decoders in both polled or continous time code mode.Leap second and quality are supported. Most of this code is originally from refclock_wwvb.c with thanks. Any mistakes are mine. Any improvements are welcome.</p> 25*2b15cb3dSCy Schubert <h4>Model 325 timecode format</h4> 26*2b15cb3dSCy Schubert <p><tt><cr><lf>RQ_1C00LYYYY+DDDUTCS_HH:MM:SSL+5</tt></p> 27*2b15cb3dSCy Schubert <p>R = Signal readability indicator, ranging from R1 to R5 Q R1 is unreadable, R5 is best reception<br> 28*2b15cb3dSCy Schubert _ = Space<br> 29ea906c41SOllivier Robert 1 = prev. received data bit, values: 0, 1 ,M or ? unknown 30*2b15cb3dSCy Schubert C = Signal reception from (C)olorado or (H)awaii 0 = Hours since last WWVB time and flag code update, values 0 00 to 99 (hopefully always 00)<br> 31*2b15cb3dSCy Schubert L = HEX A5 if receiver is locked to WWVB, Space if not<br> 32*2b15cb3dSCy Schubert YYYY = Year from 2000 to 2099<br> 33*2b15cb3dSCy Schubert + = '+' if current year is a leap year, else ' '<br> 34*2b15cb3dSCy Schubert DDD = current day in the year from 1 to 365/366<br> 35*2b15cb3dSCy Schubert UTC = timezone (always UTC)<br> 36*2b15cb3dSCy Schubert S = Daylight savings indicator, (S)TD, (D)ST, (O) transition into DST, (I) transition out of DST<br> 37*2b15cb3dSCy Schubert _ = Space<br> 38*2b15cb3dSCy Schubert HH = UTC hour 0 to 23<br> 39*2b15cb3dSCy Schubert : = Time delimiter, ':' if synced, Space if not<br> 40*2b15cb3dSCy Schubert MM = Minutes of current hour from 0 to 59<br> 41*2b15cb3dSCy Schubert : = Time delimiter, ':' if synced, Space if not<br> 42*2b15cb3dSCy Schubert SS = Seconds of current minute from 0 to 59<br> 43*2b15cb3dSCy Schubert mm = 10's milliseconds of the current second from 00 to 99<br> 44*2b15cb3dSCy Schubert L = Leap second pending at end of month, (I)nsert, (D)elete or Space<br> 45*2b15cb3dSCy Schubert +5 = UT1 correction, +/- .1 sec increments</p> 46ea906c41SOllivier Robert <p>Note that Model 325 reports a very similar output like Model 33X series. The driver for this clock is similar to Model 33X behavior. On a unmodified new ULM325 clock, the polling flag (flag1 =1) needs to be set.</p> 47*2b15cb3dSCy Schubert <h4>Model 320 timecode format</h4> 48*2b15cb3dSCy Schubert <p><tt><cr><lf>SQRYYYYDDD+HH:MM:SS.mmLT<cr></tt></p> 49*2b15cb3dSCy Schubert <p>S = 'S' -- sync'd in last hour, '0'-'9' - hours x 10 since last update, else '?'<br> 50*2b15cb3dSCy Schubert Q = Number of correlating time-frames, from 0 to 5<br> 51*2b15cb3dSCy Schubert R = 'R' -- reception in progress,'N' -- Noisy reception, ' ' -- standby mode<br> 52*2b15cb3dSCy Schubert YYYY = year from 1990 to 2089<br> 53*2b15cb3dSCy Schubert DDD = current day from 1 to 366 + = '+' if current year is a leap year, else ' '<br> 54*2b15cb3dSCy Schubert HH = UTC hour 0 to 23<br> 55*2b15cb3dSCy Schubert MM = Minutes of current hour from 0 to 59<br> 56*2b15cb3dSCy Schubert SS = Seconds of current minute from 0 to 59<br> 57*2b15cb3dSCy Schubert mm = 10's milliseconds of the current second from 00 to 99<br> 58*2b15cb3dSCy Schubert L = Leap second pending at end of month -- 'I' = insert, 'D'=delete<br> 59*2b15cb3dSCy Schubert T = DST <-> STD transition indicators</p> 60*2b15cb3dSCy Schubert <p>Note that this driver does not do anything with the T flag. The M320 also has a 'U' command which returns UT1 correction information. It is not used in this driver.</p> 61*2b15cb3dSCy Schubert <h4>Model 33x timecode format</h4> 62*2b15cb3dSCy Schubert <p><tt>S9+D 00 YYYY+DDDUTCS HH:MM:SSl+5</tt></p> 63*2b15cb3dSCy Schubert <p>S = sync indicator S insync N not in sync the sync flag is WWVB decoder sync nothing to do with time being correct </p> 64*2b15cb3dSCy Schubert <p>9+ = signal level 0 thru 9+ If over 9 indicated as 9<br> 65*2b15cb3dSCy Schubert D = data bit (fun to watch but useless ;-) space<br> 66*2b15cb3dSCy Schubert 00 = hours since last GOOD WWVB frame sync space<br> 67*2b15cb3dSCy Schubert YYYY = current year + = leap year indicator<br> 68*2b15cb3dSCy Schubert DDD = day of year<br> 69*2b15cb3dSCy Schubert UTC = timezone (always UTC)<br> 70*2b15cb3dSCy Schubert S = daylight savings indicator space<br> 71*2b15cb3dSCy Schubert HH = hours : = This is the REAL in sync indicator (: = insync)<br> 72*2b15cb3dSCy Schubert MM = minutes : = : = in sync ? = NOT in sync<br> 73*2b15cb3dSCy Schubert SS = seconds<br> 74*2b15cb3dSCy Schubert L = leap second flag<br> 75*2b15cb3dSCy Schubert +5 = UT1 correction (sign + digit ))</p> 769c2daa00SOllivier Robert <p>This driver ignores UT1 correction, DST indicator,Leap year and signal level.</p> 779c2daa00SOllivier Robert <h4>Fudge factors</h4> 789c2daa00SOllivier Robert <p>flag1 polling enable (1=poll 0=no poll)</p> 799c2daa00SOllivier Robert <hr> 80*2b15cb3dSCy Schubert <script type="text/javascript" language="javascript" src="scripts/footer.txt"></script> 81*2b15cb3dSCy Schubert </body> 829c2daa00SOllivier Robert</html> 83