In a message dated 03/05/03, stuff@................. writes:

> I set TAC32 to read the GPS but not set the PC time, ever.  Then I set
> Tardis to get the time via NTP and set the PC time every second. Then
> I set TAC32 to show the difference between GPS time and the PC time.
> 
> I get a consistent difference of .825 seconds. I have calculated the
> cable losses from the antenna and they don't seem to be able to
> account for all of that.
> 
> Anyone have any ideas?

Hi Angel,

       How about tuning your radio in to WWV time signals from Bolder and 
listening to find out which is roughly correct? 2.5, 5, 10, 15 & 20 MHz. The 
29th and 59th pulses are omitted. The minute pulse is 0.8 sec a 1 KHz and the 
rest are 5 mS. 
       The offset applied to Tardis could be incorrect. How do the radio 
signals compare with the display on your PC? I was wondering if you have a 
timekeeping problem or a time setting / reading problem, since the PC is 
driven using interrupts. 

       Regards,

       Chris Chapman
In a message dated 03/05/=
03, stuff@................. writes:



I set TAC32 to read the GPS=
 but not set the PC time, ever.  Then I set

Tardis to get the time via NTP and set the PC time every second. Then

I set TAC32 to show the difference between GPS time and the PC time.



I get a consistent difference of .825 seconds. I have calculated the

cable losses from the antenna and they don't seem to be able to

account for all of that.



Anyone have any ideas?




Hi Angel,



       How about tuning your radio in to W=
WV time signals from Bolder and listening to find out which is roughly corre=
ct? 2.5, 5, 10, 15 & 20 MHz. The 29th and 59th pulses are omitted. The m=
inute pulse is 0.8 sec a 1 KHz and the rest are 5 mS.=20

       The offset applied to Tardis could=20=
be incorrect. How do the radio signals compare with the display on your PC?=20=
I was wondering if you have a timekeeping problem or a time setting / readin=
g problem, since the PC is driven using interrupts.=20



       Regards,



       Chris Chapman