The old Tardis program for Windows (Tardis2000 now) handles it correctly by altering the rate and only jamming the time if it is outside of a specified window but I do not think its GPS mode supports the 1 PPS signal.
I am not sure if Tardis works with Windows 7 and above though; I forget to test it on my Windows 7 test system when I had it. It is a pretty old (but free) program. On Tue, 2 Aug 2016 23:28:06 -0700, you wrote: >The WRONG way to adjust a PC clock is to set the TIME periodically from >some standard. When you do this then the time on the PC is not running at >a constant rate. The correct way to do this is to adjust the PC's clocks >RATE. You make it runs slightly faster if you notice it is getting behind >and slightly slower if it is running fast. > >Think about what you would do to a real physical clock. You would not set >it every few minutes, you'd adjust the rate and wait a little while to see >if the adjustment needs refinement or not. > >... > >Most operating systems in use today run NTP to keep their clocks in order. >Well most OSes except for Windows. Microsoft uses a vey much simplified >version of this that does the wrong thing and periodically sets the PC's >clock. You could enable this and likely, maybe reach your +/- 100ms goal. > Not the "real" NTP is a free program and not hard to set up so you can >have 1ms level accuracy without much effort and better with some work. > >On Tue, Aug 2, 2016 at 8:13 PM, Ron Ott <[email protected]> wrote: > >> This has probably been covered in the past, but is there a way correct or >> control a PC (Windows 7) clock with the HP 58503A GPS receiver? I just >> bought one (on the way now) and have a copy of satstats50 on hand. I've >> been using Dimension 4 and I'm surprised at the size of correction every >> couple minutes to my PC clock. I'd be happy if my PC clock were accurate >> to plus/minus 100ms. >> Ron _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
