What's your budget? I've done this with 1U sized NTP servers from Symmetricom (S300 and S350 systems) for mobile military use. These are a few thousand bucks a pop. They're rugged, and held up just fine in places the military goes.Compared to the rest of the system I was working on, this was quite small in comparison and we used more than one at each location. My personal one died recently so I'm working on developing a cape for the BeagleBone Black. The prototype is working just fine so far so I'm moving forward with a board layout and eventual sale to the list members if there is any interest (I'm not asking for interest yet).
-Bob On Tue, May 12, 2015 at 11:11 AM, Mark Spencer <m...@alignedsolutions.com> wrote: > Hi sorry for a possibly OT post. > Has anyone had practical experience with small commercially available time > servers / ntp servers suitable for mobile use in a vehicle. > > The use case is I am in need of an accurate (ie. within 100 ms) time > source for several pc's in moving vehicle. Being able to run directly > off a 13.8 or 28 VDC source would be a major plus but AC power is also > available. > > Hold over if there are gaps in GPS coverage is also a major plus. > > We already have a GPS with a 1 pps output, but an integrated box with it's > own GPS would be best. > > Yes I am aware I could feed a 1 pps signal into a laptop and use that as a > time server and I may end up going that route. > > There is a small Ethernet LAN in the vehicle. The pc's currently get > their time via a wireless connection to various NTP servers. I need to be > able to ensure accurate time on the PC's if there is no wireless coverage. > > > This is for a one off project so piecing together various parts is an > option but a single box COTS solution would be nice. I've found a few > candidates via web searches but would welcome any feed back. > > Thanks in advance > > Mark Spencer > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.