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Chapter 4: Using the Logic Analyzer in Eye Scan Mode
Setting Up and Running Eye Scan Measurements
when certain bus signals transition in one of the device under test's
operating modes and other bus signals transition in a different
operating mode.
1. In the Eye Scan tab, select the Labels subtab.
2. Select the bus/signal labels for the next eye scan measurement.
See Also “Labels Subtab” on page 204
To set the eye scan range and resolution
Eye Scan looks at selected logic analyzer channels for signals passing
through small windows of time (relative to clock signal edges) and
voltage. You define these windows by setting the time and voltage
ranges and resolution.
1. In the Eye Scan tab, select the Scan Settings subtab.
2. Select the scan range option.
Coarse specifies relatively large windows of time and voltage. Because
there are fewer windows to scan, the measurement runs faster.
Medium specifies moderately sized windows of time and voltage.
Fine specifies relatively small windows of time and voltage. Because there
are more windows to scan, the measurement takes longer to run.
3. If desired, you can change the time range and resolution settings.
4. If desired, you can change the voltage range and resolution settings.
Selecting the Scan voltage over entire range of signal activity option
causes the voltage range to be determined during the measurement.
If the range and resolution settings have been changed, you can use the
Default button to return to the default settings for the selected option.
See Also “To run an eye scan measurement” on page 121
“Scan Settings Subtab” on page 205
“To set advanced eye scan options” on page 121