[time-nuts] 4501 Netclock
hmurray at megapathdsl.net
Thu Apr 22 07:03:09 UTC 2010
> Has anyone successfully used a Thunderbolt GPS with a 4501 Netclock based
> on the design that John Ackermann describes on his web page.
I assume you are talking about:
Calling it a Netclock confuses google searching.
> What I am concerned about is whether or not the Thunderbolt RS-232 port
> supplies the time information in the correct format.
If you are using ntpd, the Palisade driver (29) has an option to support
TBolts. It works fine for me, but I'm running on a vanilla PC rather than a
I think that driver is included in the normal build. If not, you will have
to rebuild ntpd.
> If NanoBSD is the best way to go, that is the OS that I will use. I am
> trying to avoid loading a PC with another OS just to build the Netclock.
> Not that I am lazy, it is a matter of available free time. something that
> is in short supply these days.
You need an OS that takes advantage of the fancy timing registers on that
particular CPU chip. FreeBSD and friends are the only ones that I know of
that do that.
You may be able to scrounge a compiled kernel from somebody else.
These are my opinions, not necessarily my employer's. I hate spam.
More information about the time-nuts