Re: Issues with w32tm on AD network

Danny Mayer wrote:
Jason Rabel wrote:
Are there any GPS systems I could hook up to the Windows domain
controller, and configure W32tm to use this?

Yes. Trimble, Palisade, NMEA, Jupiter, and HOPF (DCF77) Serial and PCI
are built for Windows. I cannot tell you much about them but the code
is built for them.
Do these work with W32tm or NTPD for Windows?

I didn't think (the Meinberg build of) NTPD for windows supported any of
the refclocks? Or maybe they support the refclocks but no PPSAPI?

I don't think that Meinberg touches the config.h file when creating
their builds. The refclocks that are to be supported are defined there.

Right. The config.h file is left untouched, so whatever is included by the
source code distribution is included by the binaries.

However, I don't know how the PPS API should be supported under Windows,
except that the Windows port would come with an own kernel driver which
evaluated a PPS input signal.

The remaining question is whether it would make much sense at all to write a
such a driver since the resolution of the Windows clock is limited to ~16
milliseconds (1 ms under Vista, AFAIK).

We have sometimes requests from customers who think they can just install a
GPS PCI card in their Windows machine so their applications will get the
Windows system time wit better than 1 microsecond accuracy.

However, though some of the Windows API calls provide a resolution of 100
nanoseconds those API calls return exactly the same time stamps betwween 2
timer ticks, and then the returned time steps by the amount of the timer
tick interval.

Martin
--
Martin Burnicki

Meinberg Funkuhren
Bad Pyrmont
Germany
.

Relevant Pages

  • Re: Problem with slower startup of XP windows SP3
    ... Help and Support for details. ... The Panda Anti-virus Service has started successfully. ... The Windows Security Center Service has started. ... The local computer may not have the necessary registry information or message ...
    (microsoft.public.windowsxp.general)
  • Re: Problem with slower startup of XP windows SP3
    ... Event Viewer reports renders interpretation infinitely more difficult. ... see Help and Support Center at ... "Event Viewer in windows: ... Log on as an user with administrative rights and open Internet Explorer ...
    (microsoft.public.windowsxp.general)
  • Re: SP3 potential problem
    ... Where did you download the ATI drivers from? ... Select Start, Help and Support, Keep your Windows up- to-date with Windows Update, Review your Update History you can see the update. ... I have not been able to download Net Framework ...
    (microsoft.public.windowsxp.basics)
  • Re: older games dont work
    ... the support of my work have it and will burn a CD to me. ... and any other tips to make this game works will be great. ... Windows 95 including but not limited to: ... to map a pedal as a control ...
    (microsoft.public.windowsxp.games)
  • Re: SP3 potential problem
    ... Windows Explorer and I get a message to send the info to MS. ... Remove all SP2 and later Microsoft Net Framework items and then ... Start, Help and Support, Keep your Windows up- to-date with Windows ... Event Source: Application Error ...
    (microsoft.public.windowsxp.basics)