PSN-L Email List Message

Subject: Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN WINSDR
From: "JAMES ALLEN" jcallen1@...........
Date: Tue, 12 Aug 2008 11:52:05 -0700


Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN WINSDRGary
The log file has a string of entries such as:
1.  Adjust computer time by 393.961 seconds
2.  GPS time not set: lck 00:03 diff:0adj:0 sats:2/14 5:1E:0
3.  min buffer to old tome error: diff=3D189
4.  ADC:Id:saas readSts:4/13 5:1E:0
After the data drops out then it resumes logging data until it attempts =
to correct time again.  It does not seem to matter whether the computer =
clock is set to check the time through the internet or such checking is =
disabled.
I really appreciate your trying to help me.
James Allen
  ----- Original Message -----=20
  From: Gary Lindgren=20
  To: psn-l@.................
  Sent: Monday, August 11, 2008 9:35 PM
  Subject: RE: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN WINSDR


  James,

  Any messages in the log file after the time update.

  Gary

  =20

  From: psn-l-request@.............. =
[mailto:psn-l-request@............... On Behalf Of JAMES ALLEN
  Sent: Monday, August 11, 2008 8:58 PM
  To: psn-l@..............
  Subject: Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN WINSDR

  =20

  Thanks Dave.   I disabled the computer automatically correcting the =
time in the time and date window of Windows Xp, but alas, no luck.  I =
guess I will just have to live with not using the GPS to set the =
computer clock. =20

  James Allen

    ----- Original Message -----=20

    From: Dave Nelson=20

    To: psn-l@.................

    Sent: Monday, August 11, 2008 7:24 PM

    Subject: Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN WINSDR

    =20

    Hi James,

    =20

    I had a similar problem with Vista. I had "set computer time " set =
to enable . After a period of time  (hour to days ) Winsdr  would start =
to produce errors   and then crash. There is some kind of conflict =
between the GPS derived time and the Windows operating system. My fix =
was to disable the "set computer time" function and let the Winsdr time =
be independent of the computer time and use the internet time on the =
computer. The data is tagged with the GPS time so there is no error in =
the seismic data.=20

    =20

    I have been told  by Angel that Vista does not allow  the time to be =
set by any source other than manual or internet time services .

    =20

    I admit I don't fully understand the interaction but Vista has this =
and many other frustrating idiosyncrasies.  I did  not have this problem =
with the XP home edition .

    =20

    Dave=20

    =20

      ----- Original Message -----=20

      From: JAMES ALLEN=20

      To: psn-l@.................

      Sent: Tuesday, August 12, 2008 01:12

      Subject: Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN WINSDR

      =20

      I will try turning off Windows time service and see if that solves =
the problem.  Thanks

      James

        ----- Original Message -----=20

        From: Angel=20

        To: JAMES ALLEN=20

        Sent: Monday, August 11, 2008 5:51 PM

        Subject: Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN WINSDR

        =20

        Tuesday, August 12, 2008, 12:23:34 AM, you wrote:

        =20

              >=20
             I am using Larry's A/D and amplifier (previous version) =
with an Motorola Oncore GPS connected through Larry's GPS interface =
board.  Does anyone know why or have a solution for a drop out in data =
when the GPS corrects the computer time.  I am running Windows XP =
professional on the computer.  Everything else works fine with WinSDR.

              Thanks

              James Allen
            =20

        =20

        Hi James,

        =20

        Windows has a service called "Windows Time Service" that tries =
to keep your computer time.  Maybe it is doing just that and you end up =
with packets with weird timestamps.  Just a thought.

        =20

        You can turn off this service.

        =20

        regards,

        =20

        Angel

        =20

Re: DROP =
OUT OF DATA WHEN GPS CORRECTS TIME IN WINSDR







Gary
The log file has a string of entries = such=20 as:
1.  Adjust computer time by = 393.961=20 seconds
2.  GPS time not set: lck 00:03 = diff:0adj:0=20 sats:2/14 5:1E:0
3.  min buffer to old tome error:=20 diff=3D189
4.  ADC:Id:saas readSts:4/13=20 5:1E:0
After the data drops out then it = resumes logging=20 data until it attempts to correct time again.  It does not seem to = matter=20 whether the computer clock is set to check the time through the internet = or such=20 checking is disabled.
I really appreciate your trying to help = me.
James Allen
----- Original Message -----
From:=20 Gary=20 Lindgren
To: psn-l@..............
Sent: Monday, August 11, 2008 = 9:35=20 PM
Subject: RE: DROP OUT OF DATA = WHEN GPS=20 CORRECTS TIME IN WINSDR

James,

Any=20 messages in the log file after the time update.

Gary

 

From: psn-l-request@............... =20 [mailto:psn-l-request@............... On Behalf Of JAMES=20 ALLEN
Sent: Monday, August 11, 2008 8:58 PM
To: psn-l@..............
Subje= ct:=20 Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN=20 WINSDR

 

Thanks=20 Dave.   I disabled the computer automatically correcting the = time in=20 the time and date window of Windows Xp, but alas, no luck.  I = guess I=20 will just have to live with not using the GPS to set the computer = clock. =20

James=20 Allen

-----=20 Original Message -----

From: Dave = Nelson=20

To: psn-l@..............=20

Sent:=20 Monday, August 11, 2008 7:24 PM

Subject:=20 Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN=20 WINSDR

 

Hi=20 James,

 

I=20 had a similar problem with Vista. I had "set computer time " set to = enable .=20 After a period of time  (hour to days ) Winsdr  would = start to=20 produce errors   and then crash. There is some kind of = conflict=20 between the GPS derived time and the Windows operating system. My = fix was to=20 disable the "set computer time" function and let the Winsdr time be=20 independent of the computer time and use the internet time on the = computer.=20 The data is tagged with the GPS time so there is no error in the = seismic=20 data.

 

I have=20 been told  by Angel that Vista does not allow  the time to = be set=20 by any source other than manual or internet time services = ..

 

I=20 admit I don't fully understand the interaction but Vista has this = and many=20 other frustrating idiosyncrasies.  I did  not have this = problem=20 with the XP home edition .

 

Dave=20

 

-----=20 Original Message -----

From:=20 JAMES=20 ALLEN

Sent:=20 Tuesday, August 12, 2008 01:12

Subject:=20 Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN=20 WINSDR

 

I=20 will try turning off Windows time service and see if that solves = the=20 problem.  Thanks

James

-----=20 Original Message -----

From:=20 Angel=20

Sent:=20 Monday, August 11, 2008 5:51 PM

Subject:=20 Re: DROP OUT OF DATA WHEN GPS CORRECTS TIME IN=20 WINSDR

 

Tuesday,=20 August 12, 2008, 12:23:34 AM, you wrote:

 

> 

I=20 am using Larry's A/D and amplifier (previous version) with = an=20 Motorola Oncore GPS connected through Larry's GPS = interface board.=20  Does anyone know why or have a solution for a drop = out in=20 data when the GPS corrects the computer time.  I am = running=20 Windows XP professional on the computer.  Everything = else=20 works fine with WinSDR.

Thanks

James=20 Allen

 

Hi=20 James,

 

Windows=20 has a service called "Windows Time Service" that tries to keep = your=20 computer time.  Maybe it is doing just that and you end up = with=20 packets with weird timestamps.  Just a=20 thought.

 

You can=20 turn off this service.

 

regards,

 

Angel

 

=

[ Top ] [ Back ] [ Home Page ]