Hi Bob,
Visited your site and downloaded your programs. I'll give them a try. May upgrade my ADC when I can afford a new one as well. Thanks for the input.
Chris
-------------- Original message from "Robert McClure" : -------------- 


> Hi Chris, 
> 
> Since you are using a Dataq DI-194RS (which I do not recommend, only 
> 10 bits), and are having trouble using it with Amaseis, have you tried 
> logging with the WinDaq Lite recorder? You may be able to sort out 
> whether Amaseis is causing your problems, or your seismic system. 
> 
> I use a DI-154RS to log data from three sensors. I would not use 
> Amaseis even if I had only one channel. Instead, I use my own logging 
> software, my own heliplot program (with filters included) and my own 
> software to convert event data to PSN format files, which I 
> subsequently filter using my own WQFilter program. 
> 
> Please take a look at my web pages at 
> http://bobmcclure90.googlepages.com/sitemap 
> 
> You will find all the software you need to operate a seismic station 
> using Dataq data acquisition. 
> 
> Cheers, 
> 
> Bob 
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
> ChrisAtUpw@....... 
> Sun, Jul 27, 2008 at 6:34 PM 
> Reply-To: psn-l@.............. 
> To: psn-l@.............. 
> 
> In a message dated 2008/07/27, christopher.marshall@....... writes: 
> 
> > Then I found an old posting of yours about using the data window to set the 
> zero value, which worked! Turn out the zero value is 40,800, a value I never 
> would have found randomly. 
> 
> 
> Hi Chris, 
> 
> First check the line voltages on Larry's amplifier, say on pins 
> 7 and 4 of the input opamp LT1007 with a DVM. They should be +/-12V. 
> 
> Then check the DC output voltage of your amplifier. If it is 
> way off zero, adjust the voltage trim potentiometer on the amplifier. 
> 
> Then short the input to the ADC and check what reading you are 
> getting. It is possible that there is a fault on Ch1, but if you have 
> been using it OK with other programs, this seems unlikely. 
> 
> The next issue is noise. I am using the lower gain channel on Larry's 
> amplifier/filter 
> > board and have Amaseis set on a gain of 1 with a decimate factor of 1. I am 
> getting electrical spikes at about a frequency of one Hz. Any ideas? 
> 
> 
> Check your cables and the PSU. Unplug everything in sequence 
> and see what effects this has. It is most likely an intermittent 
> contact, but it could be a faulty PSU. 
> 
> Regards, 
> 
> Chris Chapman 
> __________________________________________________________ 
> 
> 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. 






Hi Bob,
Visited your site and downloaded your programs. I'll give them a try. =
May upgrade my ADC when I can afford a new one as well. Thanks for the inpu=
t.
Chris
-------------- Original message from "Robert McClure" <bo=
bmcclure90@.........>: -------------- 


> Hi Chris, 
>=
; 
> Since you are using a Dataq DI-194RS (which I do not recommend, =
only 
> 10 bits), and are having trouble using it with Amaseis, have =
you tried 
> logging with the WinDaq Lite recorder? You may be able t=
o sort out 
> whether Amaseis is causing your problems, or your seism=
ic system. 
> 
> I use a DI-154RS to log data from three sensor=
s. I would not use 
> Amaseis even if I had only one channel. Instead=
, I use my own logging 
> software, my own heliplot program (with fil=
ters included) and my own 
> software to convert event data to PSN fo=
rmat files, which I 
> subsequently filter using my own WQFilter prog=
ram. 
> 
> Please take a look at my web pages at 
> http:=
//bobmcclure90.googlepages.com/sitemap 
> 
> You will find all =
the software you need to operate a seismic station 
> using Dataq dat=
a acquisition. 
> 
> Cheers, 
> 
> Bob 
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
> ChrisAtUpw@a=
ol.com 
> Sun, Jul 27, 2008 at 6:34 PM 
> R=
eply-To: psn-l@.............. 
> To: psn-l@.............. 
> > In a message dated 2008/07/27, christopher.marshall@....... writes: =

> 
> > Then I found an old posting of yours about using the=
 data window to set the 
> zero value, which worked! Turn out the zer=
o value is 40,800, a value I never 
> would have found randomly. 
=
> 
> 
> Hi Chris, 
> 
> First check the line vol=
tages on Larry's amplifier, say on pins 
> 7 and 4 of the input opamp=
 LT1007 with a DVM. They should be +/-12V. 
> 
> Then check the=
 DC output voltage of your amplifier. If it=20is 
> way off zero, adj=
ust the voltage trim potentiometer on the amplifier. 
> 
> Then=
 short the input to the ADC and check what reading you are 
> getting=
.. It is possible that there is a fault on Ch1, but if you have 
> bee=
n using it OK with other programs, this seems unlikely. 
> 
> T=
he next issue is noise. I am using the lower gain channel on Larry's 
&g=
t; amplifier/filter 
> > board and have Amaseis set on a gain of 1=
 with a decimate factor of 1. I am 
> getting electrical spikes at ab=
out a frequency of one Hz. Any ideas? 
> 
> 
> Check your=
 cables and the PSU. Unplug everything in sequence 
> and see what ef=
fects this has. It is most likely an intermittent 
> contact, but it =
could be a faulty PSU. 
> 
> Regards, 
> 
> Chris C=
hapman 
> __________________________________________________________ =

> 
> Public Seismic Network Mailing List (PSN-L) 
> 
=
> To leave this list email PSN-L-REQUEST@.............. with 
> th=
e body of the message (first line only): unsubscribe 
> See http://ww=
w.seismicnet.com/maillist.html for more information.