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diff --git a/html/driver9.htm b/html/driver9.htm new file mode 100644 index 0000000..def05f8 --- /dev/null +++ b/html/driver9.htm @@ -0,0 +1,129 @@ +<HTML> +<HEAD> + <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> + <META NAME="GENERATOR" CONTENT="Mozilla/4.01 [en] (Win95; I) [Netscape]"> + <TITLE>Magnavox MX4200 GPS Receiver</TITLE> +</HEAD> +<BODY> + +<H3>Magnavox MX4200 GPS Receiver</H3> + +<HR> +<H4>Synopsis</H4> +Address: 127.127.9.<I>u</I> +<BR>Reference ID: <TT>GPS</TT> +<BR>Driver ID: <TT>GPS_MX4200</TT> +<BR>Serial Port: <TT>/dev/gps<I>u</I></TT>; 4800 baud, 8-bits, no parity +<BR>Features: <TT>ppsclock</TT> (required) + +<H4>Description</H4> +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.htm">Line +Disciplines and Streams Modules</A> page. It also requires a <A +HREF="gadget.htm">gadget box</A> and 1-PPS level converter, such as +described in the <A HREF="pps.htm">Pulse-per-second (PPS) Signal +Interfacing</A> page. + +<P>This driver supports all compatible receivers such as the 6-channel +MX4200, MX4200D, and the 12-channel MX9212, MX9012R, MX9112. + +<P> +<A HREF="http://www.leica-gps.com/"><IMG align=left HEIGHT=143 WIDTH=180 +SRC="pic/9400n.jpg" ALT="Leica MX9400N Navigator"></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> + +<BR CLEAR=LEFT> +Leica MX9400N Navigator. + +<P> + +<H4>Operating Modes</H4> +This driver supports two modes of operation, static and mobile, controlled +by clock flag 2. + +<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>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. + +<H4>Monitor Data</H4> +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.htm">MX4200 Receiver Data Format</A>. + +<H4>Fudge Factors</H4> + +<DL> +<DT> +<TT>time1 <I>time</I></TT></DT> + +<DD> +Specifies the time offset calibration factor, in seconds and fraction, +with default 0.0.</DD> + +<DT> +<TT>time2 <I>time</I></TT></DT> + +<DD> +Not used by this driver.</DD> + +<DT> +<TT>stratum <I>number</I></TT></DT> + +<DD> +Specifies the driver stratum, in decimal from 0 to 15, with default 0.</DD> + +<DT> +<TT>refid <I>string</I></TT></DT> + +<DD> +Specifies the driver reference identifier, an ASCII string from one to +four characters, with default <TT>GPS</TT>.</DD> + +<DT> +<TT>flag1 0 | 1</TT></DT> + +<DD> +Not used by this driver.</DD> + +<DT> +<TT>flag2 0 | 1</TT></DT> + +<DD> +Assume GPS receiver is on a mobile platform if set.</DD> + +<DT> +<TT>flag3 0 | 1</TT></DT> + +<DD> +Not used by this driver.</DD> + +<DT> +<TT>flag4 0 | 1</TT></DT> + +<DD> +Not used by this driver.</DD> +</DL> +Additional Information + +<P><A HREF="refclock.htm">Reference Clock Drivers</A> +<HR> +<ADDRESS> +David L. Mills (mills@udel.edu)</ADDRESS> + +</BODY> +</HTML> |