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Chapter 3: Reference
Importing Netlist and ASCII Files
How the Selected Position Behaves
1. When
eye finder
is enabled, the selected position (blue line) is set based
on the manual setup/hold value.
2. Whenever the selected position is moved, the manual setup/hold value is
also updated. They always track each other.
3. When the manual setup/hold is enabled again, the position changes made
while
eye finder
was enabled can be kept or discarded.
NOTE:
If
eye finder
changes are discarded, this includes any setup/hold settings
loaded from a configuration file while
eye finder
was enabled.
4. The selected position is "snapped" to the suggested position (green
triangle) each time the channel is measured.
How the Suggested Position Behaves
1. There is only a suggested position (green triangle) on channels that have
been measured.
2. The suggested position is always in the center of the stable region closest
to the selected position (blue line).
3. If the selected position is moved to a different stable region, the suggested
position "hops" to the center of that region.
4. If a stable region is open-ended, the suggested position is placed 1.25 ns
from the closed end (the visible boundary). If more than 1 clock edge is
active, the suggested position is placed 1.5 ns from the closed end.
Eye Finder Run Messages.
These messages can appear in the status
area after you run a
eye finder
measurement.
"XX% complete"
The indicated percentage of the channels selected for the current
eye
finder
measurement are completed.
"Cannot run the Eye Finder at this time."
A logic analyzer measurement is currently running. Stop the logic
analyzer or wait for it to complete before running
eye finder
.
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