PSN-L Email List Message
Subject: Re: Digest from 02/02/2007 00:01:26
From: Randall Peters PETERS_RD@..........
Date: Sun, 04 Feb 2007 09:54:56 -0500
I have been using Amaseis to collect data on two of my instruments--(i) one being a
modified Sprengnether vertical with unconventional force feedback (a long time-constant
integrator for "soft"-force feedback as opposed to "hard" force balance), and (ii) the
long-period pendulum that I have mentioned previously to the listserve ('hare-brained'
but useful idea involving an undamped instrument). Of course both instruments are
limited by the 16-bit Amaseis. However, I am 'feeding' Amaseis by means of a wonderful,
inexpensive 24-bit adc system built by Symmetric Research. Kip Weiss (with his
programmer Wendy) produced for me a program called Amasend98. Operating with a
null-modem serial cable, one can select from the 24-bits out of the PAR1CH--the 16-bit
segment with which to operate. By this means I generate and save *.sac files that can
be opened by WinQuake by doing nothing more than clicking on them. I stand in amazement
at the user-friendliness/power of the codes developed by Larry Cochrane!
I have found some remarkably useful synergetic features of using WinQuake and
Amaseis interchangeably. For example, Amaseis does spectra without log-frequency or
log-magnitude; whereas the plots of WinQuake are log-log. The advantages of one over the
other depend largely on the frequency range of interest. For 'usual' stuff, the log-log
plots are preferred; however, for eigenmode oscillation studies, the linear ones prove
better for my purposes. Also, Amaseis has a truly powerful, user friendly feature--the
ability, while holding down the left button of the mouse, to scan over and select for
memory, a record piece according to features of interest.
Subject: WinSDR vs. AmaSys Software
From: "Jerry Payton"
Date: Fri, 2 Feb 2007 10:49:52 -0600
This is a multi-part message in MIME format.
I was just curious (for experimental and comparison purposes) if AmaSys
software would ingest and display sensor signals via Larry Cochrane's
electronics package? Anybody ever tried?
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