HP 16550A User Reference page 87

Time Violations
I
Delay
The Trigger Menu
State Trigger Macro Library
1. Find event 2 occurring too soon after event 1
This macro becomes true when a designated pattern 1 is seen, followed by a
designated pattern 2, and with less than a selected time period occurring
between the two patterns. It uses two internal sequence levels ..
2. Find event 2 occurring too late after event 1
This macro becomes true when a designated pattern 1 is seen, followed by at
least a selected time period, before a designated pattern 2 occurs. It uses
two internal sequence levels.
1. Wait "n" external clock states
This macro becomes true after a designated number of user clock states have
occurred. It uses one internal sequence level.
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