Measurement setup

Here the measurement is configured.

Mode switches between the modes for single measurement (Mode single) and continuous measurement (Mode repeat). In repeat mode the measurement is being repeated until aborted by pressing esc. Only the last measuring cycle is displayed and kept in memory.

Averages defines the number of averages carried out for one measurement.

Presends defines the number of signal cycles played back before the actual measurement. These presends are not yet recorded. Presends can be used for example to open noise gates.

Samples displays the number of samples of the measurement signal.

Meas time [ms] displays the time corresponding to one signal cycle.

FFT length displays the number of samples as a power of two. If this values is an integer, the field is green; if FFT length is not an integer, the field is red.

Meas time [ms] displays the time needed for all averages.

If External preamps is active, the gain values deposited in Frontend setup are being considered. This is necessary having a preamplifier in the signal chain.

If Apply sensor sensitivities is active, the sensitivity values deposited in Frontend setup are being considered. This is necessary when measuring with sensors like microphones or accelerometers.