Go with the Lehman. You will record a lot more events with this type of sensor. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "Casey Crane"
To: Sent: Thursday, May 24, 2001 3:03 PM Subject: ADXL202 Sensor > Hello all, > > I finally got finished building a two axis sensor using the > ADXL202 accelerometer and boy, am I disapointed. I am using the analog > outputs rather than the digital pwm outputs and the noise is tremendous. > It is virtually a random noise generator ! I have the bandwidth for the > ADXL202 chip set at 50 Hz along with a 12 Db > 15Hz lowpass filter on the output then into a noninverting gain of > 100 into my AtoD. Geez.... I have to literally shake the sensor to > differentiate between the noise and the signal. > > I'll try a lower filter cutoff on the lopass and if that dose'nt work, > I'm changing my allegiance to Lehman. > > Casey > ________________________________________________________________ > GET INTERNET ACCESS FROM JUNO! > Juno offers FREE or PREMIUM Internet access for less! > Join Juno today! For your FREE software, visit: > http://dl.www.juno.com/get/tagj. > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>