Agilent Technologies HP 1660E Series User Manual page 333

Logic Analyzer Reference
The Analyzer Trigger Menu
If the "Else on" term is found, the secondary branch taken is to the
designated sequence level. If the "Else on" term is not found, the
analyzer continues to loop within the same sequence level until one of
the two branches is found. If the "Else on" branch is taken, the
occurrence counter is reset even if the "go to level" branch is back to
the same level. If both branches are found true at the same time, the
primary branch is taken.
Branching across the trigger level is possible. If this occurs, the
sequence level evaluation could loop without ever seeing a trigger
term. Be careful in designing your sequence instructions.
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