toolbar button
toolbar buttonThis is the first item of the Manipulate
menu - also available by pressing the toolbar button. This function can be applied to real, raw transient measurement results (obtained by the T3Ster® equipment) which correspond to the Measured response view of a real measurement (.raw files). The purpose of this function is to help remove parasitic electrical transients superimposed onto the initial section of thermal transients measured. According to the nature of the parasitic electrical transient there are two ways to separate it from the real thermal transient:
For details on this topic refer to section 5.1.4 of the T3Ster Measurement Control & Reference Guide.
Depending on the actual type of the curve (rising or falling one) the correction can occur at a “maximum” point, in this case also the Minimum seek item has to be selected.
When the Initial transient correction item of the Manipulate menu is active, the heading of the Measured response plot window is completed with a line containing some controls. These are
| Transient correction: |
roll-down menu, allows selecting the measurement channel for the correction |
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| Mode: |
roll-down menu, for selecting possible correction methods to be applied |
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No correction (default) -
no correction will take place Minimum seek Inflexion point |
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| Range: |
display field, appears if correction has been selected. It shows the limits of the range where minimum or inflexion point search will take place. The range limits can be set by dragging the two vertical red lines in the function plot. As these lines are moved, the corresponding range value is updated. |
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The initial part of the curve will be chopped off at the minimum or inflexion point found and will be substituted by a constant value. This part of the curve is indicated by a dashed line in the plot.
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Press the save button, if you are satisfied with the settings and the initial correction. The .rec file with initial transient correction will be created or replaced with new correction values. |
Figure 4-32: Correcting the initial part of the thermal transient of a diode, using minimum seek.
Note: Be sure that the plot window of the Measured response is wide enough otherwise the save button on the right will not appear.
After having saved the corrected function, the program sends an information message:
Figure 4-33: Information message about the success of the initial transient correction
During initial transient correction the zoom functions are available - see Figure 4-34. It is generally recommended to zoom into the plot for manual setting of range limit lines.
Note: In order to be able to move the red lines with the cursor arrow you need to switch off the Zoom button again.
Figure 4-34: Zoomed view of the measured response during initial transient correction
After evaluating the results, T3Ster-Master displays both the original (distorted) and the corrected transient in the Measured response plot window:
Figure 4-35: The original and the corrected transient after evaluation
save button: 
