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diff --git a/contrib/ntp/html/driver10.htm b/contrib/ntp/html/driver10.htm new file mode 100644 index 000000000000..bdf314ae46e2 --- /dev/null +++ b/contrib/ntp/html/driver10.htm @@ -0,0 +1,114 @@ +<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>Austron 2200A/2201A GPS Receivers +</TITLE> +</HEAD> +<BODY> + +<H3> +Austron 2200A/2201A GPS Receivers</H3> + +<HR> +<H4> +Synopsis</H4> +Address: 127.127.10.<I>u</I> +<BR>Reference ID: <TT>GPS</TT> +<BR>Driver ID: <TT>GPS_AS2201</TT> +<BR>Serial Port: <TT>/dev/gps<I>u</I></TT>; 9600 baud, 8-bits, no parity +<BR>Features: <TT>tty_clk</TT> +<H4> +Description</H4> +This driver supports the Austron 2200A/2201A GPS/LORAN Synchronized Clock +and Timing Receiver connected via a serial port. It supports several special +features of the clock, including the Input Buffer Module, Output Buffer +Module, IRIG-B Interface Module and LORAN Assist Module. It requires the +RS232 Buffered Serial Interface module for communication with the driver. +For operation with multiple computers, it requires the <TT>ppsclock</TT> +streams module described in the <A HREF="ldisc.htm">Line Disciplines and +Streams Modules</A> page. The streams module requires a gadget box and +1-PPS level converter, such as described in the <A HREF="pps.htm">Pulse-per-second +(PPS) Signal Interfacing</A> page. + +<P>For use with a single computer, the receiver can be connected directly +to the receiver. For use with multiple computers, one of them is connected +directly to the receiver and generates the polling messages. The other +computers just listen to the receiver output directly or through a buffer +amplifier. For computers that just listen, <TT>fudge flag2</TT> must be +set and the <TT>ppsclock </TT>streams module configured on each of them. + +<P>This receiver is capable of a comprehensive and large volume of statistics +and operational data. The specific data collection commands and attributes +are embedded in the driver source code; however, the collection process +can be enabled or disabled using the flag4 flag. If set, collection is +enabled; if not, which is the default, it is disabled. A comprehensive +suite of data reduction and summary scripts is in the ./scripts/stats directory +of the ntp3 distribution. +<H4> +Monitor Data</H4> +When enabled by the <TT>flag4</TT> fudge flag, every received timecode +is written as-is to the <TT>clockstats</TT> file. +<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> +Set for computers that listen-only.</DD> + +<DT> +<TT>flag3 0 | 1</TT></DT> + +<DD> +Not used by this driver.</DD> + +<DT> +<TT>flag4 0 | 1</TT></DT> + +<DD> +Enable verbose <TT>clockstats</TT> recording if set.</DD> +</DL> +Additional Information + +<P><A HREF="refclock.htm">Reference Clock Drivers</A> +<HR> +<ADDRESS> +David L. Mills (mills@udel.edu)</ADDRESS> + +</BODY> +</HTML> |