3.5.2 Multiple rate windows

This measurement mode is based on a single temperature scan. This temperature scan starts from the current temperature set point and proceeds to the End temperature. In this mode the transient is measured using three different acquisition settings differing in the transient length by an order of magnitude. From each of these transients the values of three different rate windows are calculated, thus after one measurement a sequence of nine rate windows are obtained. As a result, during the temperature scan nine spectra are plotted and saved after the scan is completed or stopped. If in the Data name text box the name “test” is set then the measurements will be given the following names: “test0”,  “test1”, …., and “test8”. The spectra corresponding to the following rate windows are measured: 5, 10, 20, 50, 100, 200, 500, 1000, and 2000s-1. All of these values can be decrease/increased by 50% by choosing a corresponding Rate window multiplier. A use of this option changes the time necessary to measure one transient. In this measurement mode the Transient viewer window is disabled. En example of the measurement realised with this mode of the conventional DLTS measurement can obtained from this link (courtesy of Dr V P Markevich, the University of Manchester)

 

In this measurement mode any change in the hardware setting is immediately passed to the hardware. This allows to modify the measurement parameters while the measurement in running. The end temperature and the temperature ramp can be also changed during the measurement.