During the measurement preparation, at first turn off the AE channels that will not be needed. Choose the right LC bandpass filter or set the digital filter for the main amplifiers. Determine the Hit detection Dead Time. Set the amplification mode and Hit Threshold mode and level for each AE channel individually – the optimum value for threshold levels can be set automatically, too. Enter the coordinates of each sensor and the waveguide parameters that may be applied. Select the type and sampling frequency of the environmental parameters, and provide a linear transformation of the analogue channels (that is, the correlation between the measured voltage or current signal and the measured physical quantity) to facilitate their subsequent interpretation. Either manually or automatically, in the test mode of AE sensors, the measurement-relevant properties of the object can be studied, such as the direction-dependent propagation speed and attenuation. It is possible to check the correctness and flawless operation of the entire system, including the sensitivity of the sensors installed on the object under inspection, the wiring and the external preamplifiers.
An “Automatic Serial Measurements” feature is available, which allows for continuous monitoring of objects.
During preparation of real-time evaluation during measurement, parameter groups can be compiled to list the measured or calculated AE parameters. For graphical representations of the distribution of parameters or relationships between them, X / Y1, Y2 functions can be defined. To localize AE sources, you can choose between linear, ring-side, plane, cylindrical or spherical localizing algorithms. You can sort the AE channels into groups (Array), or use a general algorithm for the entire object under inspection. You can specify the map parameters for the representation of localized sources.
Using almost any of the measured or calculated AE parameters, complex parametric filters can be defined so the evaluation is performed only on the measurement data corresponding to the conditions of the selected filters. Similarly, using almost any of the measured or calculated parameters, digital alarm conditions and alarm signals can be defined.
The instrument settings and all other data specified during the preparation of the measurement are stored in setup files.