132 lines
3.6 KiB
HTML
132 lines
3.6 KiB
HTML
<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<cr> yy/dd/mm/ddd<cr>
|
|
frdzycchhSSFTttttuuxx<cr>
|
|
|
|
on-time = first <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>
|
|
<HR>
|
|
<ADDRESS>
|
|
David L. Mills (mills@udel.edu)</ADDRESS>
|
|
|
|
</BODY>
|
|
</HTML>
|