[time-nuts] NTP linked PC clock is slightly ahead of Lady Heather GPS time

2017-10-11 Thread Mark Sims
Lady Heather's screen clock ticks when the time message comes in (which can be offset from the actual time in the message). Heather applies a receiver type dependent adjustment to the time in the message and then displays the time. If you enable the digital millisecond clock you will see that

Re: [time-nuts] Fast Rise/Fall Time Pulser

2017-10-11 Thread Robert LaJeunesse
>From https://www.maximintegrated.com/en/design/packaging/topmark/ the MAX3949 >is marked "AJK". I suspect BAA is some sort of date code. > Sent: Wednesday, October 11, 2017 at 2:28 PM > From: "Larry McDavid" > To: teksco...@yahoogroups.com, "Time-Nuts Mail List"

Re: [time-nuts] Fast Rise/Fall Time Pulser

2017-10-11 Thread Larry McDavid
The Leo Bodnar pulser output level is adjustable but at outputs higher than some 1 v P-P the rise/fall times increase. I reported the ~0.95 v P-P as what was reported on the datasheet for *my* pulser. Ok, per Leo's August 7, 2017 post, the output device is a Maxim MAX3949. Mine is marked,

Re: [time-nuts] NTP linked PC clock is slightly ahead of Lady Heather GPS time

2017-10-11 Thread Martin Burnicki
Hi Rob, Rob Kimberley wrote:> I'm using the Meinberg NTP Distribution here with their NTP Monitor prog on Win10-64, and two GPS NTP servers.> > Config settings: -> >server 192.168.1.120 iburst minpoll 4 maxpoll 5> server 192.168.1.121 iburst minpoll 4 maxpoll 5> > Consistent sub millisecond

Re: [time-nuts] NTP linked PC clock is slightly ahead of Lady Heather GPS time

2017-10-11 Thread Chris Wilson
Hello, According to that clock LH is lagging about 0.5 seconds behind... PC time matches it exactly, as close as the eye can tell. Thanks for the replies. on 11/10/2017 17:11 you wrote: > For those who are in Europe there is the PTB (Physikalisch-Technische > Bundesanstalt, the German

Re: [time-nuts] NTP linked PC clock is slightly ahead of Lady Heather GPS time

2017-10-11 Thread Azelio Boriani
For those who are in Europe there is the PTB (Physikalisch-Technische Bundesanstalt, the German Federal institute of Physics and Technology) service to check the PC's time: On Wed, Oct 11, 2017 at 5:25 PM, Mike Cook wrote: > I have Win7-64 and my LH and

Re: [time-nuts] NTP linked PC clock is slightly ahead of Lady Heather GPS time

2017-10-11 Thread Rob Kimberley
I'm using the Meinberg NTP Distribution here with their NTP Monitor prog on Win10-64, and two GPS NTP servers. Config settings: - server 192.168.1.120 iburst minpoll 4 maxpoll 5 server 192.168.1.121 iburst minpoll 4 maxpoll 5 Consistent sub millisecond results. I've also found that Win10

Re: [time-nuts] NTP linked PC clock is slightly ahead of Lady Heather GPS time

2017-10-11 Thread Mike Cook
I have Win7-64 and my LH and system time are the same (with a very short delta of < 0.2s probably due to their respective window update time). I use the Meinberg disturb of NTP. My client’s offset from the paris observatory is less than a millisec. Maybe you should check your NTP status and see

[time-nuts] NTP linked PC clock is slightly ahead of Lady Heather GPS time

2017-10-11 Thread Chris Wilson
11/10/2017 12:24 Probably a simple answer, but I am curious as to why my PC clock which is set by NTP on Windows 7 64 bit OS is ahead of Lady Heather's time, locked to a Trimble Thunderbolt by about half a second (guesstimate..) I caught a screen shot of the discrepancy