How to ? Deskew
Deskew
Use the following procedure to compensate for timing differences between voltage probes:
1. Set up the instrument to display all of the channels that you want to deskew.
2. Push the instrument Autoset button.
3. Adjust the vertical Scale a nd Position controls for each channel so that the signals overlap and are
centered on the display.
4. Adjust the horizontal Position so that a rising edge is triggered a t the center of the display.
5. Adjust the horizontal Scale so that the differences in the channel delays are clearly visible.
6. Adjust the horizontal Position again so that the first rising edge
is exactly at the center of the display.
The fastest probe is connected to this channel (the fastest probe is usually the one with the shortest
cable or with the highest bandwidth).
7. Select Deskew from the Vertical menu to open the Deskew control window.
8. Select one of the slower channels.
9. Adjust the deskew time for the slower channel s o that its signal aligns with that of the fastest channel.
The deskew adjustment range is ±75 ns.
10. Repeat steps 8 and 9 for each additional channel you want to deskew.
11. Remove the connections from the probe compensa tion termina ls.
For information on how to deskew probes when using the Probe Setup Control Window, click here
(see
page 505).
NOTE. To compensate for timing differences between voltage and current probes, order the following
Probe Calibration and Deskew Fixtures. These fixtures may require a user-supplied pulse generator.
For <4 GHz oscilloscopes, order Tektronix part number 067-0405-XX.
For ≥4 GHz oscilloscopes, order Tektronix part number 067-1586-XX.
For MSO70000C Series ins
truments: Tektronix part number 067-2083-XX to deskew the logic probe
trigger path.
Setting up analog channels
Use the following procedure to set the scale and position parameters for analog signal acquisition.
1. Set the acquisition system to Run continuously.
2. Connect the probe to the input signal source using proper probing/connecting techniques.
574 DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series
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