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132 lines
4.6 KiB
HTML
132 lines
4.6 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>NeoClock4X</title>
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<meta http-equiv="content-type"
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content="text/html; charset=ISO-8859-15">
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</head>
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<body>
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<h1>NeoClock4X - DCF77 / TDF serial line receiver<br>
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</h1>
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<hr width="100%" size="2">
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<h2>Synopsis</h2>
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<table cellpadding="0" cellspacing="0" border="0" width="100%">
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<tbody>
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<tr>
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<td valign="top">
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<table cellpadding="2" cellspacing="0" border="0" width="100%">
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<tbody>
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<tr>
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<td valign="top">Adress<br>
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</td>
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<td valign="top">127.127.44.u<br>
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</td>
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</tr>
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<tr>
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<td valign="top">Reference ID<br>
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</td>
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<td valign="top">neol<br>
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</td>
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</tr>
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<tr>
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<td valign="top">Driver ID<br>
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</td>
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<td valign="top">NEOCLK4X<br>
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</td>
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</tr>
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<tr>
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<td valign="top">Serial Port<br>
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</td>
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<td valign="top">/dev/neoclock4x-u<br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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</td>
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<td valign="top" align="right"><a href="http://www.linum.com"><img
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src="pic/neoclock4x.gif" alt="NeoClock4X - DCF77 receiver" width="150"
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height="195">
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</a><br>
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</td>
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</tr>
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</tbody>
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</table>
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<hr width="100%" size="2">
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<h2>Description</h2>
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The refclock_neoclock4x driver supports the NeoClock4X receiver available
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from <a href="http://www.linum.com">Linum Software GmbH</a>. The receiver
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is available as a <a href="http://www.dcf77.de">DCF77</a> or TDF receiver.
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Both receivers have the same output string. For more information about the
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NeoClock4X receiver please visit <a
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href="http://www.linum.com/redir/jump/id=neoclock4x&action=redir">http://www.linum.com/redir/jump/id=neoclock4x&action=redir</a>.
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<20>
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<hr width="100%" size="2">
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<h2>Fudge Factors</h2>
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<dl>
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<dt> <b><a href="clockopt.htm">time1 time</a></b></dt>
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<dd> Specifies the time offset calibration factor with the default value
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off 0.16958333 seconds. This offset is used<65> to correct serial line and
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operating system delays incurred in capturing time stamps. If you want to
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fudge the time1 offset <b>ALWAYS</b> add a value off 0.16958333. This is
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neccessary to compensate to delay that is caused by transmit the timestamp
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at 2400 Baud. If you want to compensate the delay that the DCF77 or TDF radio
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signal takes to travel to your site simply add the needed millisecond delay
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to the given value. Note that the time here is given in seconds.</dd>
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<dd>Default setting is 0.16958333 seconds.<br>
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</dd>
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</dl>
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<dl>
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<dt> <b><a href="file:///E:/ntp-4.1.1a/html/clockopt.htm">time2 time</a></b></dt>
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<dd> Not used by this driver.</dd>
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</dl>
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<dl>
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<dt> <a href="clockopt.htm"><b>flag1 0 | 1</b></a></dt>
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<dd>When set to 1 the driver will feed ntp with timestampe even if the
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radio signal is lost. In this case an internal backup clock generates the
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timestamps. This is ok as long as the receiver is synced once since the receiver
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is able to keep time for a long period.</dd>
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<dd>Default setting is 0 = don't synchronize to CMOS clock.<br>
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</dd>
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<dd><br>
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</dd>
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<dt> <a href="clockopt.htm"><b>flag2 0 | 1</b></a></dt>
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<dd>You can allow the NeoClock4X driver to use the quartz clock even if
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it is never synchronized to a radio clock. This is usally not a good idea
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if you want preceise timestamps since the CMOS clock is maybe not adjusted
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to a dst status change. So <b>PLEASE</b> switch this only on if you now
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what you're doing.</dd>
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<dd>Default setting is 0 = don't synchronize to unsynchronized CMOS clock.<br>
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</dd>
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<dt><br>
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</dt>
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<dt><a href="clockopt.htm"><b>flag3 0 | 1</b></a></dt>
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<dd> Not used by this driver.<tt><tt><tt><tt><tt><tt> </tt></tt></tt></tt></tt></tt></dd>
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<dd><br>
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</dd>
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<dt> <a href="clockopt.htm"><b>flag4 0 | 1</b></a></dt>
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<dd>It is recommended to allow extensive logging while you setup the NeoClock4X
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receiver. If you activate flag4 every received data is logged. You should
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turn off flag4 as soon as the clock works as expected to reduce logfile
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cluttering.</dd>
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<dd>Default setting is 0 = don't log received data and converted utc time.<br>
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</dd>
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</dl>
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<hr width="100%" size="2">Please send any comments or question to <a
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href="mailto:neoclock4@linum.com">neoclock4x@linum.com</a>.<br>
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<br>
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<br>
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</body>
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</html>
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