1290001Sglebius<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2132451Sroberto 3132451Sroberto<html> 4132451Sroberto 5182007Sroberto <head> 6290001Sglebius <meta http-equiv="content-type" content="text/html;charset=iso-8859-1"> 7182007Sroberto <title>Ultralink Clock</title> 8290001Sglebius <link href="scripts/style.css" type="text/css" rel="stylesheet"> 9290001Sglebius </head> 10290001Sglebius 11290001Sglebius <body> 12290001Sglebius <h3>Ultralink Clock</h3> 13290001Sglebius<p>Last update: 14290001Sglebius <!-- #BeginDate format:En2m -->31-Dec-2007 19:43<!-- #EndDate --> 15290001Sglebius UTC</p> 16182007Sroberto <hr> 17182007Sroberto <h4>Synopsis</h4> 18290001Sglebius <p>Address: 127.127.34.<i>u</i><br> 19290001Sglebius Reference ID: <tt>WWVB</tt><br> 20290001Sglebius Driver ID: <tt>ULINK</tt><br> 21290001Sglebius Serial Port: <tt>/dev/wwvb<i>u</i></tt>; 9600 bps, 8-bits, no parity<br> 22290001Sglebius Features: <tt>(none)</tt></p> 23182007Sroberto <h4>Description</h4> 24290001Sglebius <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> 25290001Sglebius <h4>Model 325 timecode format</h4> 26290001Sglebius <p><tt><cr><lf>RQ_1C00LYYYY+DDDUTCS_HH:MM:SSL+5</tt></p> 27290001Sglebius <p>R = Signal readability indicator, ranging from R1 to R5 Q R1 is unreadable, R5 is best reception<br> 28290001Sglebius _ = Space<br> 29290001Sglebius 1 = prev. received data bit, values: 0, 1 ,M or ? unknown 30290001Sglebius 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> 31290001Sglebius L = HEX A5 if receiver is locked to WWVB, Space if not<br> 32290001Sglebius YYYY = Year from 2000 to 2099<br> 33290001Sglebius + = '+' if current year is a leap year, else ' '<br> 34290001Sglebius DDD = current day in the year from 1 to 365/366<br> 35290001Sglebius UTC = timezone (always UTC)<br> 36290001Sglebius S = Daylight savings indicator, (S)TD, (D)ST, (O) transition into DST, (I) transition out of DST<br> 37290001Sglebius _ = Space<br> 38290001Sglebius HH = UTC hour 0 to 23<br> 39290001Sglebius : = Time delimiter, ':' if synced, Space if not<br> 40290001Sglebius MM = Minutes of current hour from 0 to 59<br> 41290001Sglebius : = Time delimiter, ':' if synced, Space if not<br> 42290001Sglebius SS = Seconds of current minute from 0 to 59<br> 43290001Sglebius mm = 10's milliseconds of the current second from 00 to 99<br> 44290001Sglebius L = Leap second pending at end of month, (I)nsert, (D)elete or Space<br> 45290001Sglebius +5 = UT1 correction, +/- .1 sec increments</p> 46182007Sroberto <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> 47290001Sglebius <h4>Model 320 timecode format</h4> 48290001Sglebius <p><tt><cr><lf>SQRYYYYDDD+HH:MM:SS.mmLT<cr></tt></p> 49290001Sglebius <p>S = 'S' -- sync'd in last hour, '0'-'9' - hours x 10 since last update, else '?'<br> 50290001Sglebius Q = Number of correlating time-frames, from 0 to 5<br> 51290001Sglebius R = 'R' -- reception in progress,'N' -- Noisy reception, ' ' -- standby mode<br> 52290001Sglebius YYYY = year from 1990 to 2089<br> 53290001Sglebius DDD = current day from 1 to 366 + = '+' if current year is a leap year, else ' '<br> 54290001Sglebius HH = UTC hour 0 to 23<br> 55290001Sglebius MM = Minutes of current hour from 0 to 59<br> 56290001Sglebius SS = Seconds of current minute from 0 to 59<br> 57290001Sglebius mm = 10's milliseconds of the current second from 00 to 99<br> 58290001Sglebius L = Leap second pending at end of month -- 'I' = insert, 'D'=delete<br> 59290001Sglebius T = DST <-> STD transition indicators</p> 60290001Sglebius <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> 61290001Sglebius <h4>Model 33x timecode format</h4> 62290001Sglebius <p><tt>S9+D 00 YYYY+DDDUTCS HH:MM:SSl+5</tt></p> 63290001Sglebius <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> 64290001Sglebius <p>9+ = signal level 0 thru 9+ If over 9 indicated as 9<br> 65290001Sglebius D = data bit (fun to watch but useless ;-) space<br> 66290001Sglebius 00 = hours since last GOOD WWVB frame sync space<br> 67290001Sglebius YYYY = current year + = leap year indicator<br> 68290001Sglebius DDD = day of year<br> 69290001Sglebius UTC = timezone (always UTC)<br> 70290001Sglebius S = daylight savings indicator space<br> 71290001Sglebius HH = hours : = This is the REAL in sync indicator (: = insync)<br> 72290001Sglebius MM = minutes : = : = in sync ? = NOT in sync<br> 73290001Sglebius SS = seconds<br> 74290001Sglebius L = leap second flag<br> 75290001Sglebius +5 = UT1 correction (sign + digit ))</p> 76290001Sglebius <p>This driver ignores UT1 correction, DST indicator,Leap year and signal level.</p> 77182007Sroberto <h4>Fudge factors</h4> 78182007Sroberto <p>flag1 polling enable (1=poll 0=no poll)</p> 79182007Sroberto <hr> 80290001Sglebius <script type="text/javascript" language="javascript" src="scripts/footer.txt"></script> 81290001Sglebius </body> 82290001Sglebius</html> 83