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Editing: tf582_4.html

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>
		<meta name="GENERATOR" content="Adobe PageMill 3.0 per Windows">
		<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
		<title>PTB Modem Time Service</title>
		<link href="scripts/style.css" type="text/css" rel="stylesheet">
	</head>

<body>
		<h3>European Automated Computer Time Services</h3>
Last update:
 21-Oct-2010 23:44
 UTC
		<hr>
		Several European countries use the following message data format:
		Data format 
				0000000000111111111122222222223333333333444444444455555555556666666666777777777 7 
				0123456789012345678901234567890123456789012345678901234567890123456789012345678 9 
				1995-01-23 20:58:51 MEZ 10402303260219950123195849740+40000500 * 
				A B C D EF G H IJ K L M N O P Q R S T U V W XY Z&lt;CR&gt;&lt;LF&gt; 
				A year 
				B month 
				C day 
				D hour 
				E : normally 
				A for DST to ST switch first hour 
				B for DST to ST switch second hour if not marked in H 
				F minute 
				G second 
				H timezone 
				I day of week 
				J week of year 
				K day of year 
				L month for next ST/DST changes 
				M day 
				N hour 
				O UTC year 
				P UTC month 
				Q UTC day 
				R UTC hour 
				S UTC minute 
				T modified julian day (MJD) 
				U DUT1 
				V direction and month if leap second 
				W signal delay (assumed/measured) 
				X sequence number for additional text line in Y 
				Y additional text 
				Z on time marker (* - assumed delay / # measured delay) 
				&lt;CR&gt;!&lt;LF&gt; ! is second change ! 
			
		This format is an ITU-R Recommendation (ITU-R TF583.4) and is now available from the primary timing centres of the following countries: Austria, Belgium, Germany, Italy, The Netherlands, Poland, Portugal, Romania, Spain, Sweden, Switzerland, Turkey and United Kingdom. Some examples are:
		<ul>
			<li>In Germany by Physikalisch-Technische Bundesanstalt (PTB)'s timecode service. Phone number: +49 5 31 51 20 38.
				For more detail, see <a href="http://www.ptb.de/english/org/4/43/433/disse.html">http://www.ptb.de/english/org/4/43/433/disse.htm</a>
			<li>In the UK by National Physical Laboratory (NPL)'s TRUETIME service. Phone number: 0891 516 333
				For more detail, see <a href="http://www.npl.co.uk/npl/ctm/truetime.html">http://www.npl.co.uk/npl/ctm/truetime.html</a>
			<li>In Italy by Istituto Elettrotecnico Nazionale &quot;Galileo Ferrais&quot; (IEN)'s CTD service. Phone number: 166 11 46 15
				For more detail, see <a href="http://www.ien.it/tf/time/Pagina42.html">http://www.ien.it/tf/time/Pagina42.html</a>
			<li>In Switzerland by Swiss Federal Office of Metrology's timecode service. Phone number: 031 323 32 25
				For more detail, see <a href="http://www.metas.ch/en/labors/official-time/modem/index.html">http://www.ofmet.admin.ch/de/labors/4/Zeitvert.html </a>
			<li>In Sweden by SP Swedish National Testing and Research Institute 's timecode service. Phone number: +46 33 415783.
				For more detail, see <a href="http://www.sp.se/metrology/timefreq/eng/tandf.htm">http://www.sp.se/metrology/timefreq/eng/tandf.htm</a>
		</ul>
		<dl></dl>
		<h4>Additional Information</h4>
		<a href="../refclock.html">Reference Clock Drivers</a>
		<hr>
		<script type="text/javascript" language="javascript" src="scripts/footer.txt"></script>
	</body>

</html>

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