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NMEA Refclock Users (Hey, if you think more/different columns are needed, please edit accordingly!) NTP Version Operating System Computer Vendor and ...
SHM Refclock Users (If you think more/different columns are needed, please edit accordingly!) NTP Version Operating System Computer Talks to Status ...
Garmin Refclock Users (Hey, if you think more/different columns are needed, please edit accordingly!) NTP Version Operating System Computer Garmin Model ...
Configuring NMEA Refclocks Generic NMEA refclocks use the 127.127.20.x driver. The configuration directives required depends on the receiver and its internal configuration ...
Configuring HP !Z3801A Refclocks The HP !Z3801A is popular with hams. They also make great reference clocks for NTP. A large number of them were available surplus ...
Z3801A GPS receiver modifications Description The !Z3801A is a GPS timing receiver designed for CDMA base stations. Many of these devices are available on the surplus ...
ntpd access restrictions Restrictions are used to control access to your ntpd and are, unfortunately, one of the most misunderstood parts of ntpd configuration ...
Refclock Users ATOM Refclock Users Bancomm Refclock Users Users of the Dumb Refclock Endrun Praecis Refclock Users Garmin Refclock Users ...
NTP Support Table of Contents WebHome ProxiesTunnelsAndVPNs QuickStartIndex QuickStartPage GettingStarted NTPFourWindowsNTHints ...
Configuring Refclocks By Name By Refclock Driver Number Adjusting Radioclocks #ByName By Name Configuring ATOM (PPS) Refclocks Configuring ...
Known Operating System Issues Lost Interrupts There are several mechanisms for systems to miss timer interrupts. All cause troubles for time keeping. Scheduler ...
WWVB Refclock Users (Hey, if you think more/different columns are needed, please edit accordingly!) NTP Version Operating System Computer WWVB Receiver ...
Windows Time Service Beginning with Windows 2000, Microsoft includes the Windows Time Service with all versions of Windows. Initially, the pupose of Windows Time Service ...
Cisco NTP Almost all Cisco networking devices (routers, switches, firewalls, etc.) include an NTP implementation. Some routing protocols require synchronized time ...
OpenNTPD OpenNTPD is an independent partial re implementation of NTP. It aims to be a simple, reliable, and highly secure implementation. Related Topics: OpenNTPD ...
Java SNTP Client This is a Java implementation of an NTP client, and is released under the GPL license. It handles NTP parameters as native Java types, making it ...
Chrony Chrony is an NTP implementation for UNIX like operating systems that is designed to work well on systems with intermittent network connectivity. Related Topics ...
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Other Implementations Of NTP An index of third party implementations of NTP.
Clock Links General interest, non commercial, time related links. Tube Clocks and the Nixie Wristwatch Jeff Thomas / Resonant Instruments LLC LeapSecond ...
Configuring Parse Refclocks Configuring a Meinberg !GPS167BGT Harlan uses the serial connector scheme. The COMx and TxD ports get Yost DCE adapters on them. ...
Configuring Garmin Refclocks General Notes The Garmin GPS18 LVC works well with NTP. Beware: The other models of the GPS18 don't have PPS support. You should be ...
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NTP Support Web This is a web based collaboration area for Community Supported Documentation for the reference implementaion of NTP from www.ntp.org. Please see the ...
Troubleshooting NTP First things first. Please be sure you have your NTP network properly designed. Also make sure you have NTP properly configured. If your ntp ...
Starting NTP 4 Start ntpd as Early as Possible As early as possible in the boot sequence, run: ntpd g N (note that in versions 4.0 thru 4.1.2, you must ...
Known Hardware Issues APIC and ACPI These can cause problems for maintaining clock accuracy. See APIC support in Linux 2.6.x Kernels and ACPI for more information ...
Getting Started With NTP Note: If you are really impatient, the NTP Quick Start Page (or http://www.eecis.udel.edu/~mills/ntp/html/quick.html) is an even shorter ...
Help Wanted View complete list Support Updates: View complete list Current Versions ...
Configuring Autokey This topic provides a step by step guide for setting up NTP Autokey Authentication. See the Authentication specification and the Briefing Slides ...
Kernel configuration for NTP Some installations support additional features or functionality. Here are some descriptions. FreeBSD FreeBSD6 and PPS Linux
Help Wanted NTP synchronization offset value is high 172.28.24.6:root@/usr/local/bin$ 172.28.24.6:root@/usr/local/bin$ /usr/local/bin/ntpq p remote ...
Choosing Reference Clocks There are many choices for reference clocks. In increasing levels of precision they are: modem refclocks radio refclocks ...
Selecting Offsite NTP Servers Upstream Time Server Selection Criteria When looking for off site NTP servers to be used, keep some things in mind: Rules of Engagement ...
Garmin GPS 18LVC Performance The information presented here is collected by the contributing authors, or others, and is made available on an as is basis. The ...
Inexpensive OEM GPS Receivers With PPS Garmin GPS 18LVC Refclock Driver: Type 20 PPS: 1us Cost: ~$70 $80 (2007 11 10) Specifications: http ...
Users of the "Dumb" Refclock NTP Version Operating System Computer Connected to Status Who Related Topics: ConfiguringDumbRefclocks, ...
Refclock Maintainers Wanted The following refclock drivers are in need of a maintainer: Chronolog Datum Dumbclock Forum Graphic Hopf PCI ...
NTP not using PPS I am using Kernel :2.6.23rc2 PPS patch: ntp pps 2.6.23rc2.diff NTP version: ntp 4.2.4P4 I have enabled PPS support as a module.Under this I have ...
Monitoring and Controlling NTP See TroubleshootingNTP for checking the behavior of a particular machine. Monitoring NTP For ongoing monitoring of an NTP network there ...
Configuring SHM Refclocks Under LINUX there is the gpsd service which provides SHM services. In ntp.conf include lines: # ... and use gpsd daemon for time sync server ...
Configuring PST Traconex Refclocks (Insert useful information here) Related Topics: PSTTraconexRefclockUsers
Configuring PCI SyncClock32 Refclocks From ntp 4.2.0 to ntp 4.2.2, more precisely with changeset 1.1152.9.9, the refclock gpsvme.c changed from a reference clock driver ...
Default Refclocks Poll Step One The current build default for the Reference Implementation is All non Parse Refclocks. Please slect from the choices listed below ...
Trimble Palisade Acutime Refclock Users (Hey, if you think more/different columns are needed, please edit accordingly!) NTP Version Operating System Computer ...
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