User Manual

Application examples
3. Open the PWRVIE
W software by double-clicking the desktop icon.
4. Click the Add button to connect the PA3000.
All available instruments will be listed in the selection panel.
5. Select the desired instrument (the PA3000) and then click Connect.
6. On the Setup page, select the Group A tab.
7. Select the highest current range from the Range selection under the Current
Channel settings.
Any other range can be selected if the expected peak inrush current is known.
8. Select the Apk+ and Apk- measurements along with any o ther desired
parameters.
9. Go to the Measure grid and clear the Zero Blanking check box in the top
ribbon.
10. Select averaging of 1 from the drop-down m enu for averaging.
11. Click the Start button. The measurements will start updating.
12. When the measurement grid is updating, connect the DUT to measure the
inrush current.
13. Hover over the Apk+ and Apk- measurements to find the maximum positive
and negative inrush current.
14. To graphically view the inrush current peak, right-click Apk+ and Apk- and
then select the Trend Measurements.
The Trend chart will start updating with real time results of Apk+ and Apk-
values. Connecting the DUT will graphically show the inrush current peak
value.
15. To reset the Min and Max values on the Trend graph, click the Reset icon.
Tektronix recommends repeating the inrush current measurements by connecting
the DUT several times to capture the highest possible peak value. The highest
possible peak value occurs on the peak voltage cycle and it is important to capture
this point for the maximum inrush current. It is also important to wait a few
moments between conne cting the DUT
to allow the input capacitance on the
device to completely discharge.
Further settings if required
Data logging. All instances of inrush current testing can be recorded using the
Record feature of the PWRVIEW software.
To record data using PWRVIEW, click the Record button on the menu bar.
The software will start recording all the selected data including formulas
and limits.
To stop the data logging, click the Stop button.
PA3000 Power Analyzer User Manual 137