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6.11 Example 11: Measuring Data Propagation Delay
When you doubt that there appear instabilities in a serial data propagation control circuit, you can
set the oscilloscope to measure the propagation delay between the enable signal and the transfer
data.
To set the propagation delay measurement, follow the steps below.
1.
Connect two oscilloscope probes respectively to the CS (chip-select) pin and the DATA pin on
the chip.
2.
Set the Probe option attenuation to 10X for both probes.
3.
Open CH1 and CH2 at the same time, both with the attenuation of 10X.
4.
Push the AUTO button to trigger a stable waveform display.
5.
Adjust the horizontal and vertical controls to optimize the waveform display.
6.
Push the CURSOR button to view the Cursor menu.
7.
Push the Type option button and select Time.
8.
Select Cursor S and place it on the active edge of the enable signal.
9.
Select Cursor E and place it on the data output transition (See the figure below).
10. Read the data propagation delay in the Delta readout.
DSO1000E Series HandHeld Oscilloscope User Manual
CH1
DATA
CS
CH2
Application Examples
55
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