The specification for the PSN Type 4 file format is found at:

http://www.seismicnet.com/psnformat4.html

  Note that the DateTime data structure allows the time of the first sample
to be entered to the nearest nanosecond. You will have to consult Larry
Cochran about whether time from SDR is entered to that precision. My source
data comes from Dataq WDQ files, which record starting time only to the
second.

Bob McClure

On Sun, Feb 15, 2009 at 1:15 AM, Bob Hancock  wrote:

> Geoff -
>
> The recording of event data is done through WinSDR, not WinQuake.  In the
> replay mode of WinSDR, you can only set the time with one minute accuracy.
>  Once you have recorded an event through WinSDR, you can edit or crop the
> file with WinQuake, with a one second accuracy.  When viewing a file through
> WinQuake, you can look at timing that is accurate to 0.001 seconds, but I am
> unaware of anyway to save the data with that accuracy.
>
> There are other programs out there, but I am not familiar with them and
> cannot comment on their accuracy.
>
> Bob Hancock
>
>
>
>
> On Feb 14, 2009, at 6:22 PM, GMV wrote:
>
> *Howdy you Winquake Experts;*
> **
> *how in heck does one get winquake to recognize*
> *the exact time for the very first sample ?*
> **
>
>
  The specification for the PSN Type 4 file format is found at:
http://www.seismicne=
t.com/psnformat4.html

  Note that the DateTime data structu=
re allows the time of the first sample to be entered to the nearest nanosec=
ond. You will have to consult Larry Cochran about whether time from SDR is =
entered to that precision. My source data comes from Dataq WDQ files, which=
 record starting time only to the second.


Bob McClure

On Sun, Feb 15, 2009 at 1=
:15 AM, Bob Hancock <icarus@.........> wrote:

Geoff -

The recording of even=
t data is done through WinSDR, not WinQuake.  In the replay mode of Wi=
nSDR, you can only set the time with one minute accuracy.  Once you ha=
ve recorded an event through WinSDR, you can edit or crop the file with Win=
Quake, with a one second accuracy.  When viewing a file through WinQua=
ke, you can look at timing that is accurate to 0.001 seconds, but I am unaw=
are of anyway to save the data with that accuracy.

There are other programs out there, but I am not famili=
ar with them and cannot comment on their accuracy.

Bob Hancock





On Feb 14, 2009, at 6:22 PM, GMV wrote:


Howdy you Winquake Experts;
&nb=
sp;
how in heck does one=
 get winquake to recognize

the exact time for the very f=
irst sample ?