On Thu, Dec 11, 2014 at 1:22 PM, Bob Bownes <bow...@gmail.com> wrote:
> > If there is always a system running, why go with the bbb? I use the file > server in the basement fed with 1pps to the non USB serial port from a > TBolt in my office. > > You do have a file server in the basement don't you? :) > Yes, I do. Two in fact. They are two of the machines running 7x24 on the network. Unfortunately I have found that NTP on them does not perform well. So being able to throw a $55 board at the problem of optimizing NTP performance and decoupling it from the up/down status of anything else on the network makes sense to me. I consider routing, DNS, and NTP to be services of the network infrastructure and should be independent of anything else. > I suppose it would be an interesting experiment to feed an NTP server with > several PPS signals (either simultaneous or offset) to see how it handles > it. Or to set up an NTP chorus fed from multiple PPS sources or even a > single PPS source to see how they average out. Maybe over the holidays. I > really should finish up running the coax for a shared GPS antenna to the > basement. > That does make sense to me. > > Bob > > PS: As to the buy a second BBB/RPi question, I've taken to buying what I > think will be key spare parts for projects and stocking them. Each project > gets a shoebox sized storage bin on the shelves in the basement. One part > of the shelves is completed projects, the other is in process. It has the > added side benefit of telling me when I have too many unfinished projects. > :) > That makes sense to me too. As for the 1U time and frequency server, there is a LOT of extra space in the 1U box for an extra BBB and, potentially, for another LTE-lite. Of course, the NTP function will work with just a generic GPS module with 1pps out. Said: are you going to be doing another run of LTE-lite eval boards? I think I would like to get one as a spare. -- Brian Lloyd Lloyd Aviation 706 Flightline Drive Spring Branch, TX 78070 br...@lloyd.aero +1.210.802-8FLY (1.210.802-8359) _______________________________________________ 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.