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Chapter 3: Reference
Importing Netlist and ASCII Files
request or when the Sampling Positions dialog is closed or iconified.
"Timeout: < N K clocks in 5 sec"
Eye finder requires stimulus at a minimum rate to perform its
measurements. Too few state clocks were seen in the time allotted.
Check clock inputs, clock definition, threshold voltage settings, and the
operation of the device under test.
Eye Finder Info Messages. These messages appear in the Eye
Finder Results tab after an eye finder measurement is run.
"Example measurement for demo. Results and settings will not be used for
analysis."
This channel was measured when "Use demo data (no probes
required)" was selected in the Settings tab. The data shown are typical
of eye finder operation, but the sample position setting shown is NOT
used. (The manual setting is still in use.)
"No activity present. Confirm connection, stimulus, and threshold."
This channel appears to be completely quiet.
• Check the probe connection between the analyzer and the device under
test.
• Check the threshold voltage setting in the Format tab.
• Check that the device under test is turned on and is running the
appropriate diagnostic or other stimulus program.
If all these things are set up correctly, activity will be shown in the
Format tab.
"No stable regions. Is this the correct clock for this channel?"
Two common possibilities exist:
1. The signal on this channel is asynchronous to the clock defined for the
logic analyzer. If this is the case, there is no stable relationship between
the times when the signal switches and when the clock arrives.
If you expect the signal to be sampled synchronously you must redefine
the clock for this signal.