In a message dated 2007/02/28, b.sunardi@......... writes:

> I wish to develop 24 Bit digitizer to my digital seismograph. 
> I wish to get electronic scheme to assist me develop 24 bit digitizer. 
> anyone can help me please? 

Hi there,

       Do you want to buy one or to actually make one? 

       There are at least two suppliers who sell complete 24 bit boards at 
'reasonable prices' and software to go with them.

       If you make one, how are you going to obtain the software to drive it?

       What seismic data recording and analysis program do you plan to use? 
An 'ordinary' laboratory ADC recorder program is unlikely to have all the data 
extraction, filtering, processing and analysis that seismologists usually 
want. Nor is it likely to have the precision timing required. The software clocks 
on most computers are hopelessly inaccurate for seismic work.
       
       The design and construction of a 24 bit ADC board is not a 'simple 
task', but requires knowledge of the design, skill and the facilities to design 
and produce quite a complex printed circuit board. 

       If you wish to integrate the digtial electronics into the seismometer 
control loop, the problem is likely to get quite a lot harder.

       Regards,

       Chris Chapman     
In a me=
ssage dated 2007/02/28, b.sunardi@......... writes:



I wish to develop 24 Bit digiti=
zer to my digital seismograph. 

I wish to get electronic scheme to assist me develop 24 bit digitizer. 

anyone can help me please? 




Hi there,



       Do you want to buy one or to actually m=
ake one? 



       There are at least two suppliers who se=
ll complete 24 bit boards at 'reasonable prices' and software to go with the=
m.



       If you make one, how are you going to o=
btain the software to drive it?



       What seismic data recording and analysi=
s program do you plan to use? An 'ordinary' laboratory ADC recorder program=20=
is unlikely to have all the data extraction, filtering, processing and analy=
sis that seismologists usually want. Nor is it likely to have the precision=20=
timing required. The software clocks on most computers are hopelessly inaccu=
rate for seismic work.

       

       The design and construction of a 24 bit=
 ADC board is not a 'simple task', but requires knowledge of the design, ski=
ll and the facilities to design and produce quite a complex printed circuit=20=
board. 



       If you wish to integrate the digtial el=
ectronics into the seismometer control loop, the problem is likely to get qu=
ite a lot harder.



       Regards,



       Chris Chapman    =20