[time-nuts] Checking Time difference between PCs

Christopher Quarksnow cquarksnow at gmail.com
Thu May 23 22:06:17 EDT 2013

This might do, even though I doubt the routines are using rdtsc to
interpolate nondeterministic offset of the PIC architecture.

w32tm /stripchart /computer:<target> [/period:<refresh>] [/dataonly]

The current time is 3/8/2009 21:05:30 (local time).21:05:30
d:+00.0000000s o:+00.3047845s



On Thu, May 23, 2013 at 5:26 PM, Rex Moncur <rmoncur at bigpond.net.au> wrote:

> I wonder if anyone has suggestions as to how to check the timing variations
> between two PCs that are running windows.
> The background to this request is that I am running two instances of the
> Weak Signal Program WSJT on the same computer and get variations of +/-0.2
> seconds.  It has been suggested that the variations might be caused by the
> windows operating system.  As a check on this I am proposing to run two PCs
> locked by GPS-18 USB and set by NMEATime which should show the difference
> on
> WSJT.  But is there some program that will show the difference due to the
> PC
> clocks alone? Or perhaps a program that outputs the PC time as a pulse on a
> sound card so I can compare these on a CRO.
> Regards Rex VK7MO
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