[time-nuts] Generate 1 PPS signal on serial port

Eugen eugen at lavabit.com
Tue Aug 6 08:31:42 EDT 2013


> Marki the "smart" search engine came back with:
> 
> Prof David Mills: http://www.eecis.udel.edu/~mills/ntp/html/pps.html
> Pulse-Per-Second (PPS) Signal Interfacing Hardware:
> http://www.vk2hmc.net/blog/?p=583
> 
> If using Linux you need kernel version > 2.6.39.4 or version 3 kernel
> as the PPS interface is now included in the kernel. Unless of course,
> low latency and jitter is not an issue for you ;) You can use either
> parallel or serial PPS.
> 
> For windows see http://www.davehart.net/ for binaries.
> David Taylor pretty much covers it here:
> http://www.satsignal.eu/ntp/NTP-on-Windows-Vista.html

Thanks, but I need it the other way: the PC itself should generate the
1 PPS signal without an external reference, except the network
connection to NTP servers. It's more of a software problem.



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