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    CAL-2000 Seismic Calibration Parameter Setting Software

    CAL-2000 Seismic Calibration Parameter Setting Software

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    CAL-2000 Seismic Calibration Parameter Setting Software

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    Testing the velocity (or Acceleration) Sensitivity (Amplitude-frequency Characteristics) With the method of electric-drive steady-state Sine Calibration, the Sensitivity of Seismometer Calibration unit may be rectified by high-accuracy vibration station. Single or multiple frequency-point calibration may be chosen and the resultant parameters can be formed into various formats to be saved or printed.

    l Testing the Voltage Sensitivity of the seismometer Testing the system-response sensitivity of the seismometer and the voltage-conversion sensitivity of the acquisition results in the output-voltage sensitivity of the seismometers.

    l Testing the 2-step Transmission Function of the seismometer as well as its zero-pole-point parameters The damping constant and self-resonant period are determined with the help of calibration waveform caused by the step signal from the seismometer through the step-signal A-F spectrum via Fourier transform by the means of non-linear least square method( Newton-Gaos method).

    l Testing the Transmission Function of the System The software evaluates the system characteristics-transmission function (including seismometer and acquisition) based on the response data towards the system input and output by the means of system recognition theory and method.

    l Testing the noise power Density Mainly used to test the Noise including Station-base surveying, site noise testing, Industrial noise and vibration noise source determination with multi-channel function and to result in noise power spectrum density curves and resultant parameters.

    l Testing the self-noise of the seismometer mainly used for research of the seismometers and for production dept to test its self-noise, meanwhile to do some relative analysis towards the noise recording data.

    l Testing Pulse (step) Calibration Parameters for multiple Stations Including the output amplitude of calibration response waveform, the self-resonant period and damping of the seismometers and resulting in batches in each station each component the 2-step Transmission Function and zero-pole-point parameters and summing up the number of abnormal stations. Once the program starts, the multiple-station calibration waveform files can be automatically input into the centre computer to determine the parameters of each component each station with statistic report-form output function. (specially for digital networks)

    l Input & Output Parameters in both words and pictures It features strong function in graphics. Both A-F & P-F characteristics are output in the form of curves and the output data are saved in the form of table files, which enables the customers to manage and use the calibration resultant data conveniently



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