From: "Larry Cochrane" <cochrane@..............> Subject: Re: WinSDR Time Add/Drop Mode Date: Wed, 9 Oct 2002 22:31:15 -0700
Gary,
The Add/Drop Interval is used to compensate for the oscillator on the A/D
board being off frequency a little, not the PC's clock. If you use the Local
Time reference mode you should have your computer synced to a time reference
using a program like NTP. For everything to work correctly, the PC's time
must be correct to within a few milliseconds and not jumping around too
much. If the PC's time is correct and stable the A/D board can use the time
to correctly calculate the correct Add / Drop interval time and direction
(add or drop time). Once you add GPS you should not have any problems with
time keeping.
-Larry
----- Original Message -----
From: "Gary Thurmond" <w6str@.......>
To: <winsdr@..............>
Sent: Wednesday, October 09, 2002 9:34 PM
Subject: WinSDR Time Add/Drop Mode
> My WinSDR & PC timing in local mode is running fast about 1 second in
> 1300.
> Setting the 1 mSec Add/Drop Interval to 00:00:01.300 and Mode= Drop has
> had no effect.
> Thinking this may require a restart of WinSDR, I did that and still no
> change of the WinSDR time running fast about the same rate.
> PC time stays the same as the WinSDR time.
> The PC mother board clock is a Dallas Semi module that has normally run
> about 5 seconds slow/month before running WinSDR.
> I'll be adding GPS to the system in a few weeks, but until then I would
> like to use the time correction feature.
>
> Is there something else in the configuration that has to be set?
>
> Gary
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