freebsd-dev/contrib/ntp/html/drivers/driver32.html

38 lines
1.7 KiB
HTML
Raw Normal View History

2004-07-20 15:01:56 +00:00
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso8859-1">
<title>Chrono-log K-series WWVB receiver</title>
<link href="../scripts/style.css" type="text/css" rel="stylesheet">
</head>
<body>
<h3>Chrono-log K-series WWVB receiver</h3>
<hr>
<h4>Synopsis</h4>
<p>Address: 127.127.32.<i>u</i><br>
Reference ID: <tt>CHRONOLOG</tt><br>
Driver ID: <tt>CHRONOLOG</tt><br>
Serial Port: <tt>/dev/chronolog<i>u</i></tt>; 2400 bps, 8-bits, no parity<br>
<br>
Features: <tt>(none)</tt></p>
<h4>Description</h4>
<p>This driver supports the Chrono-log K-series WWVB receiver. This is a very old receiver without provisions for leap seconds, quality codes, etc. It assumes output in the local time zone, and that the C library mktime()/localtime() routines will correctly convert back and forth between local and UTC. There is a hack in the driver for permitting UTC, but it has not been tested.</p>
<p>Most of this code is originally from refclock_wwvb.c with thanks. It has been so mangled that wwvb is not a recognizable ancestor.</p>
<pre>
Timecode format: Y yy/mm/ddCLZhh:mm:ssCL
Y - year/month/date line indicator
yy/mm/dd -- two-digit year/month/day
C - \r (carriage return)
L - \n (newline)
Z - timestamp indicator
hh:mm:ss - local time
</pre>
<!-- hhmts start -->Last modified: Sun Feb 14 11:57:27 EST 1999 <!-- hhmts end -->
<hr>
<script type="text/javascript" language="javascript" src="../scripts/footer.txt"></script>
</body>
</html>