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Diffstat (limited to 'contrib/ntp/html/drivers/driver23.html')
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diff --git a/contrib/ntp/html/drivers/driver23.html b/contrib/ntp/html/drivers/driver23.html deleted file mode 100644 index c8b37be..0000000 --- a/contrib/ntp/html/drivers/driver23.html +++ /dev/null @@ -1,104 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> - -<html> - - <head> - <meta name="GENERATOR" content="Adobe PageMill 3.0 per Windows"> - <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> - <title>PTB Modem Time Service</title> - <link href="../scripts/style.css" type="text/css" rel="stylesheet"> - </head> - - <body> - <h3>PTB Modem Time Service and other European Laboratories Time Services</h3> - <hr> - <h4>Synopsis</h4> - <p>Address: 127.127.23.<i>u</i><br> - Reference ID: <tt>PTB</tt><br> - Driver ID: <tt>ACTS_PTB</tt><br> - Serial Port: <tt>/dev/ptb<i>u</i></tt>; 1200 baud, 8-bits, no parity<br> - Requires: <tt>/usr/include/sys/termios.h</tt> header file with modem control</p> - <h4>Description</h4> - <p>This driver supports the PTB Automated Computer Time Service (ACTS) and it is a modified version of the NIST ACTS driver so see it for more informations..</p> - <p>It periodically dials a prespecified telephone number, receives the PTB timecode data and calculates the local clock correction. It designed primarily for use when neither a radio clock nor connectivity to Internet time servers is available. For the best accuracy, the individual telephone line/modem delay needs to be calibrated using outside sources.</p> - <p>The only change between this driver and the NIST one is the data format. Infact PTB data format is the following:</p> - <p><font size="-1" face="Courier New">Data format<br> - 0000000000111111111122222222223333333333444444444455555555556666666666777777777 7<br> - 0123456789012345678901234567890123456789012345678901234567890123456789012345678 9<br> - 1995-01-23 20:58:51 MEZ 10402303260219950123195849740+40000500 *<br> - A B C D EF G H IJ K L M N O P Q R S T U V W XY Z<CR><LF><br> - A year<br> - B month<br> - C day<br> - D hour<br> - E : normally<br> - A for DST to ST switch first hour<br> - B for DST to ST switch second hour if not marked in H<br> - F minute<br> - G second<br> - H timezone<br> - I day of week<br> - J week of year<br> - K day of year<br> - L month for next ST/DST changes<br> - M day<br> - N hour<br> - O UTC year<br> - P UTC month<br> - Q UTC day<br> - R UTC hour<br> - S UTC minute<br> - T modified julian day (MJD)<br> - U DUT1<br> - V direction and month if leap second<br> - W signal delay (assumed/measured)<br> - X sequence number for additional text line in Y<br> - Y additional text<br> - Z on time marker (* - assumed delay / # measured delay)<br> - <CR>!<LF> ! is second change !<br> - </font></p> - <p>This format is an ITU-R Recommendation (ITU-R TF583.4) and is now available from the primary timing centres of the following countries: Austria, Belgium, Germany, Italy, The Netherlands, Poland, Portugal, Romania, Spain, Sweden, Switzerland, Turkey, United Kingdom. Some examples are:</p> - <ul> - <li>In Germany by Physikalisch-Technische Bundesanstalt (PTB)'s timecode service. Phone number: +49 5 31 51 20 38. - <p>For more detail, see <a href="http://www.ptb.de/english/org/4/43/433/disse.html">http://www.ptb.de/english/org/4/43/433/disse.htm</a></p> - <li>In the UK by National Physical Laboratory (NPL)'s TRUETIME service. Phone number: 0891 516 333 - <p>For more detail, see <a href="http://www.npl.co.uk/npl/ctm/truetime.html">http://www.npl.co.uk/npl/ctm/truetime.html</a></p> - <li>In Italy by Istituto Elettrotecnico Nazionale "Galileo Ferrais" (IEN)'s CTD service. Phone number: 166 11 46 15 - <p>For more detail, see <a href="http://www.ien.it/tf/time/Pagina42.html">http://www.ien.it/tf/time/Pagina42.html</a></p> - <li>In Switzerland by Swiss Federal Office of Metrology 's timecode service. Phone number: 031 323 32 25 - <p>For more detail, see <a href="http://www.ofmet.admin.ch/de/labors/4/Zeitvert.html%20">http://www.ofmet.admin.ch/de/labors/4/Zeitvert.html </a></p> - <li>In Sweden by SP Swedish National Testing and Research Institute 's timecode service. Phone number: +46 33 415783. - <p>For more detail, see <a href="http://www.sp.se/metrology/timefreq/eng/tandf.htm">http://www.sp.se/metrology/timefreq/eng/tandf.htm</a><br> - </p> - </ul> - <h4>Fudge Factors</h4> - <dl> - <dt><tt>time1 <i>time</i></tt> - <dd>Specifies the time offset calibration factor, in seconds and fraction, with default 0.0. - <dt><tt>time2 <i>time</i></tt> - <dd>Not used by this driver. - <dt><tt>stratum <i>number</i></tt> - <dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0. - <dt><tt>refid <i>string</i></tt> - <dd>Specifies the driver reference identifier, an ASCII string from one to four characters, with default PTB. - <dt><tt>flag1 0 | 1</tt> - <dd>Not used by this driver. - <dt><tt>flag2 0 | 1</tt> - <dd>Not used by this driver. - <dt><tt>flag3 0 | 1</tt> - <dd>Not used by this driver. - <dt><tt>flag4 0 | 1</tt> - <dd>Not used by this driver. - </dl> - <h4>Additional Information</h4> - <p>A keyword in the ntp.conf file permits a direct connection to a serial port of source of time like IEN CTD signal. It is sufficient to use the string DIRECT in place of the phone number.</p> - <p>Example:</p> - <p><font face="Courier New">server 127.127.23.1</font></p> - <p><font face="Courier New">phone DIRECT</font></p> - <h4>Additional Information</h4> - <p><a href="../refclock.html">Reference Clock Drivers</a></p> - <hr> - <script type="text/javascript" language="javascript" src="../scripts/footer.txt"></script> - </body> - -</html>
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