Changes between Version 9 and Version 10 of HowTo/SimulationFilters


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Timestamp:
01/13/2012 12:58:10 PM (11 years ago)
Author:
MarcusWalther
Comment:

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  • HowTo/SimulationFilters

    v9 v10  
    5858The most important information you need are the poles, zeros and normalization factor of the instrument's transfer function (commonly supplied by vendor). 
    5959 
    60 Now create the corresponding [ShmDocFilterFiles#FFTfilter FFT filter file]. For example we use data from [http://www.passcal.nmt.edu/content/instrumentation/sensors/sensor-comparison-chart IRIS] for the Nanometrics Trillium 240 seismometer (generation 1). Usually the data contains information for velocity proportional input.  Please make sure that the poles and zeros are specified in radians/s (including factor 2π), not plain Hz (without 2π). 
     60Now create the corresponding [ShmDocFilterFiles#FFTfilter FFT filter file]. For example we use data from [http://www.passcal.nmt.edu/content/instrumentation/sensors/sensor-comparison-chart IRIS] for the Nanometrics Trillium 240 seismometer (generation 1). Usually the data contains information for velocity proportional input.  Please make sure that the poles and zeros are specified in radians/s (including factor 2π), not plain Hz (without 2π). 
    6161 
    6262There are 5 zeros and 7 poles (complex numbers) listed: