Tutorial Taking a Low Speed Signal Quality Measurement
Taking a Low Speed Signal Quality Measurement
This section discusses how to take a Low Speed Signal Quality measurement, view the results, and
generate a report. To perform these tasks, the application must be installed and enabled on a supported
oscilloscop
e. View I
nstalling the application (see page 12) to install the application.
To take a Low Speed Signal Quality measurement, follow these steps:
1. To set the application to default values, select File > Recall Default. The application displays the
message ‘Default setup recalled successfully.’ Select OK to view a screen image s howing the default
settings.
2. Select the Low Speed tab and select the Signal Quality measurements in the Signal Quality Check
area usin
g Select All button.
3. Select the Configure tab or select Measurements > Configure. The M
easurements: Configure default
setting
sdisplay.
4. Select the Measurements: Source. If the source is Live or Ref, configure the appropriate channels for
D+, D– a
nd Qualifier. You have to always select D+ first. If you select any one of the Live channels
CH1-CH4 for D+ source, the remaining L ive channels are selected from the D– and the Qualifier
channel source. If you select any one of the Ref channels Ref1-Ref4 for D+ source, the remaining Ref
channels are selected from the D– . There is no Qualifier channel source for the Ref signals.
If the source is from the file, use the browse button to browse the file.
1. Select the file
C:\TekApplications\tdsusb2\tsvfiles\LS_SQC.tsv.
2. Select the
command button to run the application. The application displays the Eye Diagram
(see page 131) and the Waveform Plot (see page 130).
3. Minimize the eye diagram and waveform plot to view the summary results.
4. The application displays the Results Summary as PASS
. You can also select the result to
view the details of the selected test.
5. To v
iew the Results Details (see page 130), select Results > Details in the application menu bar or
PASS command button in the Overall Result area to view the details of each measurements.
6. Select Utilities > Report Generator in the application menu bar to generate the Report.
7. You c an v
iew th e default screen with the Tektronix Specific Format enabled. The report directory
appears with a default file name. You can change the file name if you want. Click the Generate button.
8. Click the generate button. The application generates an HTML file in
C:\TekApplications\td-
susb2\report
.Toview this report (see page 129),openitinanHTMLviewerorabrowser.
66 TDSUSB2 Universal Serial Bus Measurements Package
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