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+<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>PSTI/Traconex 1020 WWV/WWVH Receiver
+</TITLE>
+</HEAD>
+<BODY>
+
+<H3>
+PSTI/Traconex 1020 WWV/WWVH Receiver</H3>
+
+<HR>
+<H4>
+Synopsis</H4>
+Address: 127.127.3.<I>u</I>
+<BR>Reference ID: <TT>WWV</TT>
+<BR>Driver ID: <TT>WWV_PST</TT>
+<BR>Serial Port: <TT>/dev/wwv<I>u</I></TT>; 9600 baud, 8-bits, no parity
+<BR>Features: <TT>tty_clk</TT>
+<H4>
+Description</H4>
+This driver supports the PSTI 1010 and Traconex 1020 WWV/WWVH Receivers.
+No specific claim of accuracy is made for these receiver, but actual experience
+suggests that 10 ms would be a conservative assumption.
+
+<P>The DIP-switches should be set for 9600 bps line speed, 24-hour day-of-year
+format and UTC time zone. Automatic correction for DST should be disabled.
+It is very important that the year be set correctly in the DIP-switches;
+otherwise, the day of year will be incorrect after 28 April of a normal
+or leap year. The propagation delay DIP-switches should be set according
+to the distance from the transmitter for both WWV and WWVH, as described
+in the instructions. While the delay can be set only to within 11 ms, the
+fudge time1 parameter can be used for vernier corrections.
+
+<P>Using the poll sequence <TT>QTQDQM</TT>, the response timecode is in
+three sections totalling 50 ASCII printing characters, as concatenated
+by the driver, in the following format:
+<PRE>ahh:mm:ss.fffs&lt;cr> yy/dd/mm/ddd&lt;cr>
+frdzycchhSSFTttttuuxx&lt;cr>
+
+on-time = first &lt;cr>
+hh:mm:ss.fff = hours, minutes, seconds, milliseconds
+a = AM/PM indicator (' ' for 24-hour mode)
+yy = year (from DIPswitches)
+dd/mm/ddd = day of month, month, day of year
+s = daylight-saving indicator (' ' for 24-hour mode)
+f = frequency enable (O = all frequencies enabled)
+r = baud rate (3 = 1200, 6 = 9600)
+d = features indicator (@ = month/day display enabled)
+z = time zone (0 = UTC)
+y = year (5 = 91)
+cc = WWV propagation delay (52 = 22 ms)
+hh = WWVH propagation delay (81 = 33 ms)
+SS = status (80 or 82 = operating correctly)
+F = current receive frequency (4 = 15 MHz)
+T = transmitter (C = WWV, H = WWVH)
+tttt = time since last update (0000 = minutes)
+uu = flush character (03 = ^c)
+xx = 94 (unknown)</PRE>
+The alarm condition is indicated by other than <TT>8</TT> at <TT>a</TT>,
+which occurs during initial synchronization and when received signal is
+lost for an extended period; unlock condition is indicated by other than
+<TT>0000</TT> in the <TT>tttt</TT> subfield.
+<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>WWV</TT>.</DD>
+
+<DT>
+<TT>flag1 0 | 1</TT></DT>
+
+<DD>
+Not used by this driver.</DD>
+
+<DT>
+<TT>flag2 0 | 1</TT></DT>
+
+<DD>
+Not used by this driver.</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>&nbsp;
+<HR>
+<ADDRESS>
+David L. Mills (mills@udel.edu)</ADDRESS>
+
+</BODY>
+</HTML>