Tektronix TDSUSB2, Manual

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Taking Measurements
Note: You can modify the automatic oscilloscope settings if there is no valid
waveform on the oscilloscope screen. To do so, select the command button
to run the application and select OK to complete the process.
You may need to adjust the inrush setups, as inrush currents have a wide
variety of durations and peak currents. Use the vertical division settings between
100 mA/division to 5 A/division and time bases between 500 ns/div and 20
µs/division. If you set a time base higher than 20 µs/division, adjust the
instrument’s record length to have minimum acquisition duration of 20 µs.
Control Menu Options
Table 8. Control options
Option/button Description
Run icon Runs the application
Hide button Hides the application and displays the oscilloscope
application on the entire screen
Exit button Exits the application
Viewing Results
You can view the results in a summary form or in a detailed form. To access the
Results: Summary, select Results> Summary. The application displays one of the
following results.
A PASS indicates that the results of the measurements comply with
the USB2.0 specifications.
A FAIL indicates that the measured values of the measurements are
beyond the waiver limits and do not comply with the USB2.0 specifications.
A Conditional PASS indicates that the limits of the tests are within
the USB2.0 waiver limits.
Note: The application displays PASS or FAIL based on the limits you set.
TDSUSB2 Universal Serial Bus Measurement Package 51