PSN-L Email List Message

Subject: Sample rate on Amaseis??
From: "Paul Cianciolo" Paulc@........
Date: Tue, 26 Jun 2007 16:00:29 -0400

Hello Folks,
I was just thinking about the sample rate for Amaseis.

The preamp board I have from Larry Cochrane is set to 10 HZ -3db point low
pass filter.
This means that a minimum sample rate of at least  2x should be used, I
think according to Mr Nyquist.

My Amaseis is set to sample at 6 SPS.  This should lead to some interesting
aliasing results.

In the config file I changed the sample rate to 20 SPS and now the Winquake
FFT window shows  out to 10 Hz.

I have not tested an upload to the PSN yet.

Any thoughts out there.

PauLC
W1VLF








Hello=20
Folks,


I was=20
just thinking about the sample rate for Amaseis.


 


The=20
preamp board I have from Larry Cochrane is set to 10 HZ -3db point low =
pass=20
filter.


This=20
means that a minimum sample rate of at least  2x should be used, I =
think=20
according to Mr Nyquist.


 


My=20
Amaseis is set to sample at 6 SPS.  This should lead to some =
interesting=20
aliasing results.


 


In the=20
config file I changed the sample rate to 20 SPS and now the Winquake FFT =
window=20
shows  out to 10 Hz.


 


I have=20
not tested an upload to the PSN yet.


 


Any=20
thoughts out there.


 


PauLC


W1VLF


 


 


 
[ Top ] [ Back ] [ Home Page ]