[ntp:questions] Using a "composite clock" time source?

ntp at tla.org ntp at tla.org
Tue Nov 6 21:23:10 UTC 2007


Kevin Oberman wrote:
>> From: "scott.baker at gmail.com" <scott.baker at gmail.com>
> ...
> Make sure that they are providing time code, not just a clock signal. IF
> they are, it is most likely IRIG-B timecode and there are several ntpd
> supported reference clocks that support IRIG-B.

Spectracom makes a PCI board that reads a variety of timecodes, and they 
even have support for Linux:

http://www.spectracomcorp.com/Home/Products/BuslevelTimingBoards/TPROPCIUPCITimecodeReaderGen/tabid/776/Default.aspx

Plus, of course, their 9200 and 9300 series "Network Time Servers" have 
an option to take IRIG input.

All these inputs are normally fed on coax cable with BNC connectors.

Hope this helps,

/ji



More information about the questions mailing list