mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-29 08:52:46 +00:00
192 lines
4.9 KiB
HTML
192 lines
4.9 KiB
HTML
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
|
||
<html>
|
||
<head>
|
||
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
|
||
<title>hopf clock drivers by ATLSoft</title>
|
||
</head>
|
||
<body text="#000000" bgcolor="#FFFFFF" link="#0000FF" vlink="#800080" alink="#FF0000">
|
||
|
||
<h1>
|
||
<font face="Arial"><i><blink><font size="5">hopf</font></blink></i><font size="+2">
|
||
</font><font size="3">Serial Line Receivers (6021 and kompatible)</font></font></h1>
|
||
<hr>
|
||
|
||
<h2>
|
||
<font size=+1>Synopsis</font></h2>
|
||
|
||
<table border="0" cellpadding cellspacing width="100%">
|
||
<tr>
|
||
<td>
|
||
|
||
<table border="0" cellpadding="3" bgcolor="#C0C0C0">
|
||
<tr>
|
||
<td height="21">
|
||
<div align=right><tt>Address: </tt></div>
|
||
</td>
|
||
|
||
<td><b>127.127.38.<i>X</i></b></td>
|
||
</tr>
|
||
|
||
<tr>
|
||
<td height="1">
|
||
<div align=right><tt>Reference ID: </tt></div>
|
||
</td>
|
||
|
||
<td height="1"><a NAME="REFID"></a><b>.hopf. </b>(default)<b>, GPS, DCF</b></td>
|
||
</tr>
|
||
|
||
<tr>
|
||
<td height="21">
|
||
<div align=right><tt>Driver ID: </tt></div>
|
||
</td>
|
||
|
||
<td height="21"><b>HOPF_S</b></td>
|
||
</tr>
|
||
|
||
<tr>
|
||
<td height="16">
|
||
<div align=right><tt>Serial Port: </tt></div>
|
||
</td>
|
||
|
||
<td height="16"><b>/dev/hopfclock<i>X</i></b></td>
|
||
</tr>
|
||
|
||
<tr>
|
||
<td height="23">
|
||
<div align=right><tt><font size=+1>Serial I/O</font>: </tt></div>
|
||
</td>
|
||
|
||
<td height="23"><b>9600 baud, 8-bits, 1-stop, no parity</b></td>
|
||
</tr>
|
||
</table>
|
||
|
||
</td>
|
||
<td align="center"><img border="0" src="pic/fg6021.gif" width="238" height="207"></td>
|
||
</tr>
|
||
</table>
|
||
|
||
<hr>
|
||
|
||
<h2>
|
||
<font size=+1>Description</font></h2>
|
||
The <b>refclock_hopf_serial</b> driver supports <a href="http://www.hopf.com">hopf
|
||
electronic receivers</a> with serial Interface kompatibel 6021.
|
||
<br>Additional software and information about the software drivers is available
|
||
from: <a href="http://www.ATLSoft.de/ntp">http://www.ATLSoft.de/ntp</a>.
|
||
<br>Latest NTP driver source, executables and documentation is maintained
|
||
at: <a href="http://www.ATLSoft.de/ntp">http://www.ATLSoft.de/ntp</a>
|
||
<hr>
|
||
<h2>
|
||
<font size=+1>Operating System Compatibility</font></h2>
|
||
<p align="left">
|
||
The hopf clock driver has been tested on the following software and hardware
|
||
platforms:
|
||
<br> <table bgcolor="#C0C0C0">
|
||
<tr>
|
||
<td VALIGN=CENTER WIDTH="23%" nowrap>
|
||
<p align="left"><b>Platform</b></p>
|
||
</td>
|
||
|
||
<td VALIGN=CENTER nowrap>
|
||
<p align="left"><b>Operating System</b></p>
|
||
</td>
|
||
|
||
</tr>
|
||
|
||
<tr>
|
||
<td VALIGN=CENTER WIDTH="23%" nowrap>
|
||
<p align="left">i386 (PC) </p>
|
||
</td>
|
||
|
||
<td VALIGN=CENTER nowrap>
|
||
<p align="left">Linux</p>
|
||
</td>
|
||
|
||
</tr>
|
||
|
||
<tr>
|
||
<td nowrap>
|
||
<p align="left">i386 (PC) </p>
|
||
</td>
|
||
|
||
<td nowrap>
|
||
<p align="left">Windows NT</p>
|
||
</td>
|
||
|
||
</tr>
|
||
|
||
<tr>
|
||
<td nowrap>
|
||
<p align="left">i386 (PC) </p>
|
||
</td>
|
||
|
||
<center>
|
||
|
||
<td nowrap>Windows 2000</td>
|
||
|
||
</tr>
|
||
|
||
</table></center>
|
||
|
||
<hr>
|
||
|
||
<h2>
|
||
<font size=+1>O/S Serial Port Configuration</font></h2>
|
||
The driver attempts to open the device <b><tt><a href="#REFID">/dev/hopfclock<i>X</i></a></tt></b>
|
||
where <i><b>X</b></i> is the NTP refclock unit number as defined by the
|
||
LSB of the refclock address. Valid refclock unit numbers are 0 -
|
||
3.
|
||
<p>The user is expected to provide a symbolic link to an available serial
|
||
port device. This is typically performed by a command such as:
|
||
<blockquote><tt>ln -s /dev/ttyS0 /dev/hopfclock0</tt></blockquote>
|
||
Windows NT does not support symbolic links to device files. <br>
|
||
<b> COMx</b>:
|
||
is used by the driver, based on the refclock unit number, where <b> unit 1</b>
|
||
corresponds to <b> COM1</b>: and <b> unit 3</b> corresponds to <b>COM3</b>:
|
||
<br>
|
||
<hr>
|
||
|
||
<h2>
|
||
<font size=+1>Fudge Factors</font></h2>
|
||
|
||
<dl>
|
||
<dt>
|
||
<b>
|
||
<a NAME="time1"></a><tt><font size=+1><a href="#Configuration">time1 <i>time</i></a></font></tt></b></dt>
|
||
|
||
<dd>
|
||
Specifies the time offset calibration factor, in seconds and fraction,
|
||
with default 0.0. Should be set to
|
||
20 milliseconds to correct serial line and operating system delays incurred
|
||
in capturing time stamps from the synchronous packets.</dd>
|
||
|
||
<dt>
|
||
<tt><font size=+1><a href="#REFID"><b>refid <i>string</i></b></a></font></tt></dt>
|
||
|
||
<dd>
|
||
Specifies the driver reference identifier, <b>GPS </b><i>or</i> <b> DCF</b>.</dd>
|
||
|
||
<dt>
|
||
<tt><font size=+1><b>flag1 0
|
||
| 1</b></font></tt></dt>
|
||
|
||
<dd>
|
||
When set to 1, driver sync's even if only crystal driven.</dd>
|
||
</dl>
|
||
|
||
<hr>
|
||
|
||
<h2>
|
||
<a NAME="DataFormat"></a><font size=+1>Data Format</font></h2>
|
||
<p>as specified in clock manual under pt. <u>[ <span lang="EN-GB" style="font-size:10.0pt;font-family:
|
||
Arial;mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
|
||
mso-ansi-language:EN-GB;mso-fareast-language:DE;mso-bidi-language:AR-SA"><b>Data
|
||
String for NTP</b> ( <b><i>Network Time Protocol </i></b>) </span>]</u></p>
|
||
<hr>
|
||
<h3>Questions or Comments:</h3>
|
||
<p><a href="mailto:altmeier@atlsoft.de">Bernd Altmeier</a><a href="http://www.ATLSoft.de"><br>
|
||
Ing.-B<>ro f<>r Software www.ATLSoft.de</a><p>(last updated 02/28/2001)
|
||
<br>
|
||
</body>
|
||
</html>
|