[email protected] (Diego Ramos) writes: >IT WORKED!!!
>I brought from home my old USRobotics 33600 external modem, made the >symlinks and it's working fine. Now I'll try to find in the market a modem >that works with my machine. Why not sell your old USR modem to you work. Or donate it. >Although my problem is solved, I still have a few questions: >1 - I read somewhere that is better to use a GPS, because a modem does not >give the necessary precision, is it correct? What is teh necessary precision you need? If it is a few msec a modem is fine. If it is micro seconds then use GPS. >2 - I work in a BroadCast company, and there are places that I don't think a >GPS will get signal and I will have to use some kind of antenna. Is there >any GPS in the market with that feature? All of them have an antenna. Just buy the Garmin GPS18LVC wire it up to an extention line ( eg a Cat 5 network cable) of the length you need. If that length is longer than about 100m you need to terminate it properly and probably put an impedance matching amplifier on the computer end of it. >3 - What models of GPS do you guys recommend. The standard is the Garmin GPS 18 LVC . NOT the USB or the PC version -- they are completely useless for time. Only thge LVC is useful for time. (or the LVCX now I believe) It is about $100. Note that you really only need one and can use the computer it is attached to as a server which can -- depeding on your switches on your internal ethernet, give you 20microsec resolution for the time on other system conencted to it. >Thanks a lot for the time. >Diego >On Thu, Jan 8, 2009 at 12:38 PM, Uwe Klein <[email protected] >> wrote: >> Diego Ramos wrote: >> > I tried to symlink acts1 to /dev/ttS4 and later I tried to /dev/modem. >> > >> > Where I can configure the baudrate? >> > >> > I'll try to use minicom, I was using KPP to dial to NIST and test my >> line. >> > >> > Thet fact that I'm in Brazil is important? >> >> If I think (and read) about it : >> http://tf.nist.gov/service/acts.htm >> >> YES >> >> but I am really not qualified to give further advide on this. >> >> uwe >> >> _______________________________________________ >> questions mailing list >> [email protected] >> https://lists.ntp.org/mailman/listinfo/questions >> _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
