19c2daa00SOllivier Robert<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 29c2daa00SOllivier Robert 39c2daa00SOllivier Robert<html> 49c2daa00SOllivier Robert 59c2daa00SOllivier Robert <head> 69c2daa00SOllivier Robert <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> 79c2daa00SOllivier Robert <meta name="GENERATOR" content="Mozilla/4.01 [en] (Win95; I) [Netscape]"> 89c2daa00SOllivier Robert <title>Magnavox MX4200 GPS Receiver</title> 99c2daa00SOllivier Robert <link href="../scripts/style.css" type="text/css" rel="stylesheet"> 109c2daa00SOllivier Robert </head> 119c2daa00SOllivier Robert 129c2daa00SOllivier Robert <body> 139c2daa00SOllivier Robert <h3>Magnavox MX4200 GPS Receiver</h3> 149c2daa00SOllivier Robert <hr> 159c2daa00SOllivier Robert <h4>Synopsis</h4> 169c2daa00SOllivier Robert Address: 127.127.9.<i>u</i><br> 179c2daa00SOllivier Robert Reference ID: <tt>GPS</tt><br> 189c2daa00SOllivier Robert Driver ID: <tt>GPS_MX4200</tt><br> 199c2daa00SOllivier Robert Serial Port: <tt>/dev/gps<i>u</i></tt>; 4800 baud, 8-bits, no parity<br> 209c2daa00SOllivier Robert Features: <tt>ppsclock</tt> (required) 219c2daa00SOllivier Robert <h4>Description</h4> 229c2daa00SOllivier Robert <p>This driver supports the Magnavox MX4200 Navigation Receiver adapted to precision timing applications. It requires the <tt>ppsclock</tt> line discipline or streams module described in the <a href="../ldisc.html">Line Disciplines and Streams Modules</a> page. It also requires a level converter such as described in the <a href="../pps.html">Pulse-per-second (PPS) Signal Interfacing</a> page.</p> 239c2daa00SOllivier Robert <p>This driver supports all compatible receivers such as the 6-channel MX4200, MX4200D, and the 12-channel MX9212, MX9012R, MX9112.</p> 249c2daa00SOllivier Robert <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> 259c2daa00SOllivier Robert <br clear="LEFT"> 269c2daa00SOllivier Robert <p>Leica MX9400N Navigator.</p> 279c2daa00SOllivier Robert <h4>Operating Modes</h4> 289c2daa00SOllivier Robert <p>This driver supports two modes of operation, static and mobile, controlled by clock flag 2.</p> 299c2daa00SOllivier Robert <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 "Static, 3D Nav" 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 "Known Position" mode, initialized with the calculated position, and then solves only for time.</p> 309c2daa00SOllivier Robert <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 "Dynamic, 3D Nav" mode and solves for position, altitude and time while moving. No position averaging is performed.</p> 319c2daa00SOllivier Robert <h4>Monitor Data</h4> 329c2daa00SOllivier Robert <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> 339c2daa00SOllivier Robert <h4>Fudge Factors</h4> 349c2daa00SOllivier Robert <dl> 359c2daa00SOllivier Robert <dt><tt>time1 <i>time</i></tt> 369c2daa00SOllivier Robert <dd>Specifies the time offset calibration factor, in seconds and fraction, with default 0.0. 379c2daa00SOllivier Robert <dt><tt>time2 <i>time</i></tt> 389c2daa00SOllivier Robert <dd>Not used by this driver. 399c2daa00SOllivier Robert <dt><tt>stratum <i>number</i></tt> 409c2daa00SOllivier Robert <dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0. 419c2daa00SOllivier Robert <dt><tt>refid <i>string</i></tt> 429c2daa00SOllivier Robert <dd>Specifies the driver reference identifier, an ASCII string from one to four characters, with default <tt>GPS</tt>. 439c2daa00SOllivier Robert <dt><tt>flag1 0 | 1</tt> 449c2daa00SOllivier Robert <dd>Not used by this driver. 459c2daa00SOllivier Robert <dt><tt>flag2 0 | 1</tt> 469c2daa00SOllivier Robert <dd>Assume GPS receiver is on a mobile platform if set. 479c2daa00SOllivier Robert <dt><tt>flag3 0 | 1</tt> 489c2daa00SOllivier Robert <dd>Not used by this driver. 499c2daa00SOllivier Robert <dt><tt>flag4 0 | 1</tt> 509c2daa00SOllivier Robert <dd>Not used by this driver. 519c2daa00SOllivier Robert </dl> 529c2daa00SOllivier Robert <h4>Additional Information</h4> 539c2daa00SOllivier Robert <p><a href="../refclock.html">Reference Clock Drivers</a> </p> 549c2daa00SOllivier Robert <hr> 559c2daa00SOllivier Robert <script type="text/javascript" language="javascript" src="../scripts/footer.txt"></script> 569c2daa00SOllivier Robert </body> 579c2daa00SOllivier Robert 589c2daa00SOllivier Robert</html>
