Tektronix TDSUSB2, Manual

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Tutorial
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 oscilloscope. View
Installing the
application 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 showing the default settings.
2. Select the Low Speed tab and select the Signal Quality measurements in the
Signal Quality Check area using Select All button.
3. Select the Configure tab or select Measurements> Configure. The
Measurements: Configure default settings display.
4. Select the Measurements: Source. If the source is Live or Ref, configure the
appropriate channels for D+, D– and Qualifier. You have to always select
D+ first. If you select any one of the Live channels CH1-CH4 for D+
source, the remaining Live 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 a file, use the browse button to look for the file.
Select the file C:\TekApplications\tdsusb2\tsvfiles\LS_SQC.tsv.
5. Select the command button to run the application. The application
displays the Eye Diagram and the Waveform Plot.
72 TDSUSB2 Universal Serial Bus Measurement Package