freebsd-dev/contrib/ntp/html/drivers/driver24.html

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<head>
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<title>USNO Modem Time Service</title>
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<body>
<h3>USNO Modem Time Service</h3>
<hr>
<h4>Synopsis</h4>
<p>Address: 127.127.24.<i>u</i><br>
Reference ID: <tt>USNO</tt><br>
Driver ID: <tt>ACTS_USNO</tt><br>
Serial Port: <tt>/dev/cua<i>u</i></tt>; 1200 baud, 8-bits, no parity<br>
Requires: <tt>/usr/include/sys/termios.h</tt> header file with modem control</p>
<h4>Description</h4>
<p>No information available.</p>
<h4>Fudge Factors</h4>
<dl>
<dt><tt>time1 <i>time</i></tt>
<dd>Specifies the time offset calibration factor, in seconds and fraction, with default 0.0.
<dt><tt>time2 <i>time</i></tt>
<dd>Not used by this driver.
<dt><tt>stratum <i>number</i></tt>
<dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0.
<dt><tt>refid <i>string</i></tt>
<dd>Specifies the driver reference identifier, an ASCII string from one to four characters, with default <tt>USNO</tt>.
<dt><tt>flag1 0 | 1</tt>
<dd>Not used by this driver.
<dt><tt>flag2 0 | 1</tt>
<dd>Not used by this driver.
<dt><tt>flag3 0 | 1</tt>
<dd>Not used by this driver.
<dt><tt>flag4 0 | 1</tt>
<dd>Enable <tt>clockstats</tt> recording if set.
</dl>
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