Hello All,

I did a quick experiment on this and I would agree the timing is =
incorrect on the WinQuake display.  Here is my procedure:

Make text file from the "don't work header" submitted a few days back =
with some modification of data and sample rate for 100 sps and 1000 =
total samples decreasing linearly with time.  This should from the =
explanations given earlier begin to display at second number 26 given =
the start time of 19:56:25.25 and 75 samples into the data or at value =
925 in theory.  In fact the display starts at second 25 which is before =
the data start time and at the first sample value giving a .25 second =
time offset error.  My test header and portion of data are here and the =
WinQuake display is posted at http:/mit.midco.net/rpratt.  I set the =
mean data to 950 to put the beginning portion expanded on the display.  =
I used WinQuake 2.9.8. =20

Randy

! PSN ASCII Event File Format 2.0
Start Time: 2009/03/10 19:56:25.250000000
Start Time Offset: 0.000
Number of Samples:  1000
SPS: 100
Time Reference Type: Oth
Comment:[GVA]=20
A/D Converter Bits: 8
Data Minimum: 1
Data Maximum:  1000
Data Mean:  950
! Sensor Information:
Sensor Location: GVA
Sensor Description: HS10-1
Sensor Latitude: 33.42138
Sensor Longitude: -111.57477
Sensor Elevation: 507.5
Sensor Incident: 0
Sensor Azimuth: 0
Sensor Orientation: Z
Sensor Type: Velocity
Sensor Sensitivity:  7.100e-008
Sensor ID: HS-10
Magnitude Correction: 0.00235574
Component Name: SPZ
Network Affiliation: IRSS
Pick Information:
Pick Information:
Data:
1000
999
998
997
996
995
....
2
1








Hello All,
 
I did a quick experiment on this and I =
would agree=20
the timing is incorrect on the WinQuake display.  Here is my=20
procedure:
 
Make text file from the "don't work =
header"=20
submitted a few days back with some modification of data and sample rate =
for 100=20
sps and 1000 total samples decreasing linearly with time.  This =
should from=20
the explanations given earlier begin to display at second number 26=20
given the start time of 19:56:25.25 and 75 samples into the =
data or at=20
value 925 in theory.  In fact the display starts at second 25 =
which is=20
before the data start time and at the first sample value giving a =
..25=20
second time offset error.  My test header and portion =
of data are=20
here and the WinQuake display is posted=20
at http:/mit.midco.net/rpratt.  I set the mean data to 950 to =
put=20
the beginning portion expanded on the display.  I used =
WinQuake=20
2.9.8.  
 
Randy
 
! PSN ASCII Event File Format =
2.0
Start Time:=20
2009/03/10 19:56:25.250000000
Start Time Offset: 0.000
Number of=20
Samples:  1000
SPS: 100
Time Reference Type: =
Oth
Comment:[GVA]=20

A/D Converter Bits: 8
Data Minimum: 1
Data Maximum:  =
1000
Data=20
Mean:  950
! Sensor Information:
Sensor Location: =
GVA
Sensor=20
Description: HS10-1
Sensor Latitude: 33.42138
Sensor Longitude:=20
-111.57477
Sensor Elevation: 507.5
Sensor Incident: 0
Sensor =
Azimuth:=20
0
Sensor Orientation: Z
Sensor Type: Velocity
Sensor =
Sensitivity: =20
7.100e-008
Sensor ID: HS-10
Magnitude Correction: =
0.00235574
Component=20
Name: SPZ
Network Affiliation: IRSS
Pick Information:
Pick=20
Information:
Data:
1000
999
998
997
996
995
...
2
1