Hi everyone,

   Since I would enjoy having others appreciate and enjoy the fruits of my 
recent hard labor, I am offering to share free my drum plot program with 
others having the same hobby.  I warrant that the program is not malicious, 
but will take no responsibility if fails to live up to your expectations.  It 
does fully live up to mine, and has proved to be very useful. With its 
built-in filters, I can record teleseisms of magnitude 6.5 or more, and 
accurately reproduce L waves of 24 seconds period, even though my antique 
Strengnether seismometer has a natural period of only 3.5 seconds.

  This VisualBasic6.0 program presents seismic data in a 24hr format, 
starting at the first hour recorded, using WDQ files recorded by Dataq 
hardware and software (DI-194 Acquisition).  The format is very similar to 
that seen on the LDEO-LDSN Data Repository website:

      http://www.ldeo.columbia.edu/~wykim/LCSN/lcsn.html

  An expanded plot capaibility is provided, the starting time determined by a 
mouse click on the desired time on the drum plot.  Filtered copies of the 
original file can be saved by a mouse click.  Filter options include high 
pass, smooth, long period, and broadband, with user controlled filter 
parameters.  For most accurate long period and broadband response, the user 
must input the period and damping of the sensor.

  A most useful feature of this program is its ability to display filtered 
seismic data as the raw data is being recorded.  When a file currently open 
for recording is selected,  the drum plot is updated as often as new data is 
recorded to the file (every 256 data samples).  The user has almost instant 
knowledge of a seismic event when it occurs.  The ability to examine the 
detailed waveform plot is retained as well. 

  This program is not available in installable form.  Simply run the file as 
is.  It usually will run without requiring more system files on Windows98 or 
later.  Using my sample files, you won't even need the Dataq hardware and 
software to try it out.  You can order the A/D board and WindaQ Lite software 
from DataQ.com for about $15.  You will need a very stable low-pass DC 
amplifier delivering at least +-4.5v to drive the DataQ board.

  Matching this program up to the characteristics of your particular sensor 
and sampling rate may require some program changes, which I am willing to do 
for you.  I could also adapt this program to read any other data file format.

  If you have an interest, please e-mail me for a more detailed description 
of the program.  Also, describe what equipment you are using.  If you have 
any experience in VisualBasic programming, say so.  I might want to give you 
the source code, so I won't have to help you every time you need it.

Bob McClure
bobhelenmcclure@.......
Hi everyone,



   Since I would enjoy having others appreciate and enjoy the fruits of my recent hard labor, I am offering to sh
are free my drum plot program with others having the same hobby.  I warrant that the program is not malicious, but will ta
ke no responsibility if fails to live up to your expectations.  It does fully live up to mine, and has proved to be very u
seful. With its built-in filters, I can record teleseisms of magnitude 6.5 or more, and accurately reproduce L waves of 24 seco
nds period, even though my antique Strengnether seismometer has a natural period of only 3.5 seconds.



  This VisualBasic6.0 program presents seismic data in a 24hr format, starting at the first hour recorded, using WDQ f
iles recorded by Dataq hardware and software (DI-194 Acquisition).  The format is very similar to that seen on the LDEO-LD
SN Data Repository website:



      http://www.ldeo.columbia.edu/~wykim/LCSN/lcsn.html



  An expanded plot capaibility is provided, the starting time determined by a mouse click on the desired time on the d
rum plot.  Filtered copies of the original file can be saved by a mouse click.  Filter options include high pass, smo
oth, long period, and broadband, with user controlled filter parameters.  For most accurate long period and broadband resp
onse, the user must input the period and damping of the sensor.



  A most useful feature of this program is its ability to display filtered seismic data as the raw data is being recor
ded.  When a file currently open for recording is selected,  the drum plot is updated as often as new data is recorde
d to the file (every 256 data samples).  The user has almost instant knowledge of a seismic event when it occurs.  Th
e ability to examine the detailed waveform plot is retained as well. 



  This program is not available in installable form.  Simply run the file as is.  It usually will run withou
t requiring more system files on Windows98 or later.  Using my sample files, you won't even need the Dataq hardware and so
ftware to try it out.  You can order the A/D board and WindaQ Lite software from DataQ.com for about $15.  You will n
eed a very stable low-pass DC amplifier delivering at least +-4.5v to drive the DataQ board.



  Matching this program up to the characteristics of your particular sensor and sampling rate may require some program
 changes, which I am willing to do for you.  I could also adapt this program to read any other data file format.



  If you have an interest, please e-mail me for a more detailed description of the program.  Also, describe what 
equipment you are using.  If you have any experience in VisualBasic programming, say so.  I might want to give you th
e source code, so I won't have to help you every time you need it.



Bob McClure

bobhelenmcclure@.......