Changes between Version 5 and Version 6 of HowTo/SimulationFilters


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Timestamp:
01/10/2012 12:07:20 PM (11 years ago)
Author:
MarcusWalther
Comment:

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  • HowTo/SimulationFilters

    v5 v6  
    6363The most important information you need are the poles, zeros and normalization factor of the instrument's transfer function (commonly supplied by vendor). 
    6464 
    65 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 2pi), not plain Hz (without 2pi). 
     65Now 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). 
    6666 
    6767There are 5 zeros and 7 poles (complex numbers) listed: