Chapter 3
73
VEE Measurement Program Operation
Measurement
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PLL Threshold
Specifies the PLL threshold when measuring
with a parametric module. This is normally set
to 50%.
Meas. Type
Specifies the type of measurement sequence.
1)[Erase Write Meas.] means to perform a DC
erase, write data then measure. 2)[Write
Meas.] means to write data, then measure. 3)
[Meas.] means to measure only.
NOTE
The parameter values of Channel Bit Rate, Write Current and Sense Current that have been
set in the [Configuration] menu will automatically update similar parameters in this menu.
3. Click on the [Measure] button, to start measurement. When [Auto Scale] is pressed the
graph scale will adjust itself automatically to its maximum and minimum values.
Measurement
Display
The upper portion of the window shows the Baseline, Ba, Baseline- and
Baseline Separation. The graph on the other hand displays the results for each
revolution.
4. Click the [Histogram] button to open the Histogram Data Window.
Figure 3-29
Histogram Data Window
Measurement
Display
The results of the measured Baseline (BL), Ba, Baseline - and its gap results are
displayed in the form of histogram. If Average is set to 2, then only the results of the
last revolution will be displayed.
5. Click [OK] to return to Baseline menu.
6. Click the [Return] button to return to Measure menu.
See Also
See the “Baseline measurement function” section in Chapter 3 of the programming
manual.
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