diff options
Diffstat (limited to 'contrib/ntp/html/driver34.htm')
| -rw-r--r-- | contrib/ntp/html/driver34.htm | 62 |
1 files changed, 52 insertions, 10 deletions
diff --git a/contrib/ntp/html/driver34.htm b/contrib/ntp/html/driver34.htm index e9dcdbc..c114c72 100644 --- a/contrib/ntp/html/driver34.htm +++ b/contrib/ntp/html/driver34.htm @@ -1,7 +1,7 @@ <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso8859-1"> -<title>Dumb Clock</title> +<title>Ultralink Clock</title> </head> <body> @@ -10,18 +10,19 @@ <hr> <h4>Synopsis</h4> Address: 127.127.34.<i>u</i><br> -Reference ID: <TT>ULINK</TT><br> +Reference ID: <TT>WWVB</TT><br> Driver ID: <tt>ULINK</tt><br> -Serial Port: <tt>/dev/ulink<i>u</i></tt>; 9600 bps, 8-bits, +Serial Port: <tt>/dev/wwvb<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). +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>Most of this code is originally from refclock_wwvb.c with thanks. Any mistakes are mine. Any improvements are welcome. - +<hr> <pre> - The timecode format is: + The Model 320 timecode format is: <cr><lf>SQRYYYYDDD+HH:MM:SS.mmLT<cr> @@ -40,14 +41,55 @@ This driver supports the Ultralink Model 320 RS-232 powered WWVB receiver. PDF 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. + 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. + The M320 also has a 'U' command which returns UT1 correction information. + It is not used in this driver. +</pre> +<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 )) + + This driver ignores UT1 correction,DST indicator,Leap year + and signal level. + +</pre> +<hr> +<pre> + +Fudge factors + flag1 polling enable (1=poll 0=no poll) + </pre> <hr> - <address><a href="mailto:dstrout@linuxfoundary.com">root</a></address> + <address><a href="mailto:dstrout@linuxfoundary.com">mail</a></address> <!-- hhmts start --> Last modified: Tue Sep 14 05:53:08 EDT 1999 <!-- hhmts end --> |
