Windows Time Server


NTP4 Plug-In Drivers
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Besides synchronizing to other NTP servers via a local area or wide area network, the NTP4 plug-in also allows you to synchronize your computer to a number of hardware clocks, including GPS satellite receivers and radio clocks. A number of physics laboratories in various countries operate low frequency radio transmitters with ranges spanning continents.


WWV / WWVB, National Institute of Standards and Technology, Ft. Collins, Colorado, USA. The signal transmitted from Ft. Collins can be received throughout most of the continental United States as well as throughout most of Canada.
DCF77, National Institute of Natural and Engineering Sciences, Germany. The DCF77 signal can be received throughout most of western Europe, the British Isles, and is reported to be received at night as far as India, Israel and Yemen.
JJY, Communication Research Laboratory (CRL), Japan. CRL broadcasts Japan Standard Time via long wave radio.

Support for drivers in this section is contained in the NTP4 plug-in which accompanies PresenTense Time Server. The PresenTense NTP4 plug-in contains drivers for these and more. A comprehensive list of drivers supported by the NTP4 plug-in is shown in the table below. In order to enable support for the clocks shown in this section, you need to select the GPS tab. This will display the [Reference Clock] view where you can select the correct driver for your hardware.

 
Driver
Type
Coverage
Undisciplined local clock
Local BIOS
n.a.
Generic NMEA GPS receiver
GPS
global
Arbiter
GPS
global
Ultralink
WWVB
US / Canada
Spectracom
WWVB / GPS
US / Canada / global
Hopf 6870 & Compatibles
DCF77 / GPS
Germany / global
Hopf DCF77/GPS PCI-Bus Receiver
DCF77 / GPS
Germany / global
Bytefusion InSync Master Clock
GPS
global
Symmetricom
GPS
global
 


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