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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
+<html>
+<head>
+<title>Conrad parallel port radio clock</title>
+</head>
+<body>
+
+<h3>Conrad parallel port radio clock</h3>
+<hr>
+
+<h4>Synopsis</h4>
+
+<p>Address: 127.127.35.<i>u</i><br>
+Reference ID: <tt>PCF</tt><br>
+Driver ID: <tt>PCF</tt><br>
+Parallel Port: <tt>/dev/pcfclock<i>u</i></tt>
+</p>
+
+<h4>Description</h4>
+
+<p>This driver supports the parallel port radio clocks sold by <a
+href="http://www.conrad-electronic.com/">Conrad Electronic</a> under
+order numbers 967602 and 642002.  The battery-powered radio clock is
+put between a parallel port and your printer.  It receives the legal
+German time, which is either CET or CEST, from the DCF77 transmitter
+and uses it to set internal quartz clock.  The DCF77 transmitter is
+located near to Frankfurt/Main and covers a radius of more than 1500
+kilometers.
+
+<p>The driver requires that the pcfclock device driver be installed.
+A device driver for Linux&nbsp;2.2 is available at
+<a href="http://home.pages.de/~voegele/pcf.html">the pcfclock driver
+page</a>.
+</p>
+
+<p>The driver uses C library functions to convert the received
+timecode to UTC and therefore requires that the local timezone be
+CET/CEST.  If your server is not located in Central Europe, you have
+to set the environment variable TZ to CET before <tt>ntpd</tt> is
+started.</p>
+
+<h4>Monitor Data</h4>
+
+<p>Each timecode is written to the <tt>clockstats</tt> file in the format
+<tt>YYYY MM DD HH MI SS</tt>.</p>
+
+<h4>Fudge Factors</h4>
+
+<dl>
+<dt><tt>time1 <i>time</i></tt></dt>
+<dd>Specifies the time offset calibration factor, in seconds and fraction,
+with default 0.0.</dd>
+
+<dt><tt>time2 <i>time</i></tt></dt>
+<dd>Not used by this driver.</dd>
+
+<dt><tt>stratum <i>number</i></tt></dt>
+<dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0.
+</dd>
+
+<dt><tt>refid <i>string</i></tt></dt>
+<dd>Specifies the driver reference identifier, an ASCII string from one to
+four characters, with default <tt>PCF</tt>.</dd>
+
+<dt><tt>flag1 0 | 1</tt></dt>
+<dd>Not used by this driver.</dd>
+
+<dt><tt>flag2 0 | 1</tt></dt>
+<dd>Not used by this driver.</dd>
+
+<dt><tt>flag3 0 | 1</tt></dt>
+<dd>Not used by this driver.</dd>
+
+<dt><tt>flag4 0 | 1</tt></dt>
+<dd>Not used by this driver.</dd>
+</dl>
+
+<hr>
+<address>Andreas Voegele (andreas.voegele@gmx.de)</address>
+
+</body>
+</html>