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>