aboutsummaryrefslogtreecommitdiff
path: root/contrib/ntp/html/driver10.htm
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/ntp/html/driver10.htm')
-rw-r--r--contrib/ntp/html/driver10.htm114
1 files changed, 114 insertions, 0 deletions
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>&nbsp;
+<HR>
+<ADDRESS>
+David L. Mills (mills@udel.edu)</ADDRESS>
+
+</BODY>
+</HTML>