1
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
4
<title>Forum Graphic GPS Dating station</title>
8
<h3>Forum Graphic GPS Dating station</h3>
13
<p>Address: 127.127.37.<i>u</i><br>
14
Reference ID: <tt>GPS</tt><br>
15
Driver ID: <tt>GPS</tt><br>
16
Parallel Port: <tt>/dev/fgclock<i>u</i></tt>
21
<p>This driver supports the Forum Graphic GPS Dating station sold by <a
22
href="http://www.emr.fr/gpsclock.htm">EMR company</a>.
24
<p>Unfortunately sometime FG GPS start continues reporting of the same
25
date. The only way to fix this problem is GPS power cycling and ntpd
26
restart after GPS power-up.
28
After Jan,10 2000 my FG GPS unit start send a wrong answer after 10:00am
29
till 11:00am. It repeat hour value in result string twice. I wroite a small
30
code to avoid such problem. Unfortunately I have no second FG GPS unit
31
to evaluate this problem. Please let me know if your GPS has no problems
37
<p>Each timecode is written to the <tt>clockstats</tt> file in the format
38
<tt>YYYY YD HH MI SS</tt>.</p>
40
<h4>Fudge Factors</h4>
43
<dt><tt>time1 <i>time</i></tt></dt>
44
<dd>Specifies the time offset calibration factor, in seconds and fraction,
45
with default 0.0.</dd>
47
<dt><tt>time2 <i>time</i></tt></dt>
48
<dd>Not used by this driver.</dd>
50
<dt><tt>stratum <i>number</i></tt></dt>
51
<dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0.
54
<dt><tt>refid <i>string</i></tt></dt>
55
<dd>Specifies the driver reference identifier, an ASCII string from one to
56
four characters, with default <tt>FG</tt>.</dd>
58
<dt><tt>flag1 0 | 1</tt></dt>
59
<dd>Not used by this driver.</dd>
61
<dt><tt>flag2 0 | 1</tt></dt>
62
<dd>Not used by this driver.</dd>
64
<dt><tt>flag3 0 | 1</tt></dt>
65
<dd>Not used by this driver.</dd>
67
<dt><tt>flag4 0 | 1</tt></dt>
68
<dd>Not used by this driver.</dd>
72
<address>Dmitry Smirnov (das@amt.ru)</address>
added
removed
html/driver37.htm
