1 <?xml version="1.0" encoding="ISO-8859-1"?>
2 <?xml-stylesheet type="text/xsl" href="helma.xsl"?>
3 <xmlroot xmlns:hop="http://www.helma.org/docs/guide/features/database">
4 <hopobject id="1105" name="BeagleTick" prototype="Page" created="1275104634127" lastModified="1275104634127">
5 <hop:parent idref="20" prototyperef="Page"/>
6 <edit_skin>edit_project</edit_skin>
7 <updatetime type="date">28.05.2010 22:43:54 CDT</updatetime>
9 <time type="date">28.05.2010 22:43:54 CDT</time>
10 <pseudoparent idref="20" prototyperef="Page"/>
11 <registrant>voidxar.myopenid.com</registrant>
12 <pname>BeagleTick</pname>
13 <user>voidxar.myopenid.com</user>
14 <body>A accurate clock is very important for many tasks, NTP servers are used to allow computers on the network to set the correct time.
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16 WWVB time signals are broadcast from Fort Collins CO, the frequency used is 60khz, there are other VLF time signals around the world such as DCF in Germany.
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18 The BeagleTick will control a LF receiver the frequency is adjustable from 40khz to 80khz, which covers the major Time signal broadcast from around the world.
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22 DCF - 77.5 KHZ - Germany
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23 RBU- 66.66khz Russia
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26 Once the signal is received the device will demodulate the signal the corrected time is sent to the NTP or SNTP software that is running on the BeagleBoad.
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28 All user settings are controlled from a web interface. Signal strength other variables such as TCXO temp are also stored on a flash card for later analysis.
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30 The remote display is a full color graphic lch which shows the current time, TCXO state, system temp, uptime, current ip address.
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32 If the radio clock fails for any reason the unit will try and sync to a public NTP server. This unit also has 1pps output for syncing other devices which is locked to the TCXO.</body>
35 <render_skin>project</render_skin>
36 <shortdesc>The BeagleTick is a stand alone NTP time server that demodulates radio time signals that are broadcast from many locations.</shortdesc>