Annotation of embedaddon/ntp/html/drivers/driver9.html, revision 1.1.1.1

1.1       misho       1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
                      2: 
                      3: <html>
                      4: 
                      5:        <head>
                      6:                <meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
                      7:                <meta name="GENERATOR" content="Mozilla/4.01 [en] (Win95; I) [Netscape]">
                      8:                <title>Magnavox MX4200 GPS Receiver</title>
                      9:                <link href="scripts/style.css" type="text/css" rel="stylesheet">
                     10:        </head>
                     11: 
                     12:        <body>
                     13:                <h3>Magnavox MX4200 GPS Receiver</h3>
                     14:                <hr>
                     15:                <h4>Synopsis</h4>
                     16:                Address: 127.127.9.<i>u</i><br>
                     17:                Reference ID: <tt>GPS</tt><br>
                     18:                Driver ID: <tt>GPS_MX4200</tt><br>
                     19:                Serial Port: <tt>/dev/gps<i>u</i></tt>; 4800 baud, 8-bits, no parity<br>
                     20:                Features: <tt>ppsclock</tt> (required)
                     21:                <h4>Description</h4>
                     22:                <p>This driver supports the Magnavox MX4200 Navigation Receiver adapted to precision timing applications. This driver supports all compatible receivers such as the 6-channel MX4200, MX4200D, and the 12-channel MX9212, MX9012R, MX9112.</p>
                     23:                <p><a href="http://www.leica-gps.com/"><img src="../pic/9400n.jpg" alt="Leica MX9400N Navigator" height="143" width="180" align="left"></a> <a href="http://www.leica-gps.com/">Leica Geosystems</a> acquired the Magnavox commercial GPS technology business in February of 1994. They now market and support former Magnavox GPS products such as the MX4200 and its successors.</p>
                     24:                <br clear="LEFT">
                     25:                <p>Leica MX9400N Navigator.</p>
                     26:                <h4>Operating Modes</h4>
                     27:                <p>This driver supports two modes of operation, static and mobile, controlled by clock flag 2.</p>
                     28:                <p>In static mode (the default) the driver assumes that the GPS antenna is in a fixed location. The receiver is initially placed in a &quot;Static, 3D Nav&quot; mode, where latitude, longitude, elevation and time are calculated for a fixed station. An average position is calculated from this data. After 24 hours, the receiver is placed into a &quot;Known Position&quot; mode, initialized with the calculated position, and then solves only for time.</p>
                     29:                <p>In mobile mode, the driver assumes the GPS antenna is mounted on a moving platform such as a car, ship, or aircraft. The receiver is placed in &quot;Dynamic, 3D Nav&quot; mode and solves for position, altitude and time while moving. No position averaging is performed.</p>
                     30:                <h4>Monitor Data</h4>
                     31:                <p>The driver writes each timecode as received to the <tt>clockstats</tt> file. Documentation for the <cite>NMEA-0183</cite> proprietary sentences produced by the MX4200 can be found in <a href="mx4200data.html">MX4200 Receiver Data Format</a>.</p>
                     32:                <h4>Fudge Factors</h4>
                     33:                <dl>
                     34:                        <dt><tt>time1 <i>time</i></tt>
                     35:                        <dd>Specifies the time offset calibration factor, in seconds and fraction, with default 0.0.
                     36:                        <dt><tt>time2 <i>time</i></tt>
                     37:                        <dd>Not used by this driver.
                     38:                        <dt><tt>stratum <i>number</i></tt>
                     39:                        <dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0.
                     40:                        <dt><tt>refid <i>string</i></tt>
                     41:                        <dd>Specifies the driver reference identifier, an ASCII string from one to four characters, with default <tt>GPS</tt>.
                     42:                        <dt><tt>flag1 0 | 1</tt>
                     43:                        <dd>Not used by this driver.
                     44:                        <dt><tt>flag2 0 | 1</tt>
                     45:                        <dd>Assume GPS receiver is on a mobile platform if set.
                     46:                        <dt><tt>flag3 0 | 1</tt>
                     47:                        <dd>Not used by this driver.
                     48:                        <dt><tt>flag4 0 | 1</tt>
                     49:                        <dd>Not used by this driver.
                     50:                </dl>
                     51:                <h4>Additional Information</h4>
                     52:                <p><a href="../refclock.html">Reference Clock Drivers</a>&nbsp;</p>
                     53:                <hr>
                     54:                <script type="text/javascript" language="javascript" src="scripts/footer.txt"></script>
                     55:        </body>
                     56: 
                     57: </html>

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>