In a message dated 14/11/2009, lcochrane@.............. writes:

> The  best alternative is to build your own or buy from a third party 
catering to  educators.
> Im not sure Larry sells the geophone part but he does  the electronics. 
Hi Geoff,
    
    You may have to wait until Larry gets around  to producing a 24 bit 
ADC. With a 3 g maximum, a 16 bit ADC has a minimum step  size of 92 micro g. 

>  Maybe he will include new technology like one of these MEMS
>  thingys in the future ?
    Larry already sells the ICS 3052 accelerometer  board. 

Not at  $1800.00 each! Maybe someday when the price drops to under $300.00 
in  
quantities of 100 or less.
    Er? Let's make that $40? 



Looks like we are in for a severe shake up in the  seismic accelerometer 
market. 
    Check out the offerings from DigiKey? You can also  get MEMs with an 
integral ADC.
 
    Regards,
 
    Chris Chapman





In a message dated 14/11/2009, lcochrane@.............. writes:
> The=20
  best alternative is to build your own or buy from a third party catering=
 to=20
  educators.
> Im not sure Larry sells the geophone part but he=
 does=20
  the electronics. 
Hi Geoff,
    
    You may have to wait until Larry gets ar=
ound=20
to producing a 24 bit ADC. With a 3 g maximum, a 16 bit ADC has a minimum=
 step=20
size of 92 micro g. 
>=20
  Maybe he will include new technology like one of these MEMS
>=
=20
  thingys in the future ?
    Larry already sells the ICS 3052 acceleromete=
r=20
board. 
Not at=20
  $1800.00 each! Maybe someday when the price drops to under $300.00 in=20
  
quantities of 100 or less.
    Er? Let's make that $40? 

 

    Looks like we are in for a severe shake up in=
 the=20
seismic accelerometer market. 
    Check out the offerings from DigiKey? You can=
 also=20
get MEMs with an integral ADC.
 
    Regards,
 
    Chris Chapman