HP E1725C, Руководство по началу работы

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Chapter 3 Practice Using the TIA Software
TIA Software Tutorial
Getting Started Guide 3-11
3
The Fine Adjust fields are useful for “fine tuning” the settings. When
making data-to-data measurements you can experiment with making
slight changes to the value of the decoding window or the center value of
the first segment. This can be done while viewing the Segmented
Histogram or Window Margin results. Improvements in the results may
help determine, for example, an optimal offset to add to the drive’s data
decode window circuitry.
Clock Definition
The clock period is 10.000 ns and the segment width is set to equal the
clock period.
NOTE To cause value changes to take effect on the Define Segments & Clock
window, click the Apply button.
3 Click the Close button to remove the Define Segments & Clock
window, or click the minimize (
) symbol in the upper-right corner of
this window to miniaturize it.
Acquire Data
1 Click the Run button.
The TIA software starts acquiring data. Note that the Accumulate control,
near the top of the application, is enabled. This means that the results
from each acquisition will be accumulated with prior acquisitions. You can
restart the accumulation process at any time by selecting the Clear
button. If you wish only the last acquisition displayed, disable
Accumulate.
If you were acquiring actual data from the HP E1740A, the number of
interval measurements from each acquisition would be exactly 1,000
(the selected value on the TIA Setup window). In the synthetic data mode,
each update is approximately the requested size. The data produced is
based on the segment definitions. You can see the histogram distributions
take shape. Each of the seven distributions represents the measured
intervals at a particular code spacing. The statistics displayed above the
graph include all of the data between the markers.