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diff --git a/contrib/ntp/html/driver34.htm b/contrib/ntp/html/driver34.htm new file mode 100644 index 0000000..e9dcdbc --- /dev/null +++ b/contrib/ntp/html/driver34.htm @@ -0,0 +1,54 @@ +<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> +<html> <head> +<meta http-equiv="Content-Type" content="text/html; charset=iso8859-1"> +<title>Dumb Clock</title> +</head> + +<body> +<h3>Ultralink Clock</h3> + +<hr> +<h4>Synopsis</h4> +Address: 127.127.34.<i>u</i><br> +Reference ID: <TT>ULINK</TT><br> +Driver ID: <tt>ULINK</tt><br> +Serial Port: <tt>/dev/ulink<i>u</i></tt>; 9600 bps, 8-bits, +no parity<br> +<br>Features: <tt>(none)</tt> +<h4>Description</h4> +This driver supports the Ultralink Model 320 RS-232 powered WWVB receiver. PDF specs available on <a href="http://www.linuxfoundary.com">www.linuxfoundary.com</a>. While the unit may support them, this driver does nothing with leap seconds, quality codes, etc. (though it probably should). + +<P>Most of this code is originally from refclock_wwvb.c with thanks. Any mistakes are mine. Any improvements are welcome. + +<pre> + The 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 + + Note that this driver does not do anything with the L or T flags. + + The M320 also has a 'U' command which returns UT1 correction information. It + is not used in this driver. + +</pre> +<hr> + <address><a href="mailto:dstrout@linuxfoundary.com">root</a></address> +<!-- hhmts start --> +Last modified: Tue Sep 14 05:53:08 EDT 1999 +<!-- hhmts end --> +</body> </html> |