Date: Thu, 25 Apr 2002 22:08:14 -0700 From: Benji & Wendi Johnson <wjohnson@........> Subject: Sensor Information - Sensitivity
Hello! I would like to determine what my detector's sensitivity is, but
I'm not sure how to go about doing this.
I've followed the link http://www.seismicnet.com/calcsens.html to the
Sensor Sensitivity Calculator webpage, but I'm stumped on how to fill in
a couple of the fields.
1) Amplifier Gain - I'm using Larry's Amp/Filter board with the jumper
removed and the trim pot increased by "4 full turns", but how do I
measure what this amount is?
2) Sensor Sensitivity (volts/cm) - How is this determined?
I am using a Lehman style detector. In addition to Larry's Amp/Filter
board I am also using his A/D board. In playing around with the
"WinQuake MI & Ms Correction" field, 5e-005 usually gets me to within
0.3 of the declared magnitude.
In reviewing several of the posted events on the PSN site I noticed that
a few people have calculated their detector's sensitivity, but most have
not.
Thanks.
- Benji Johnson
.