Trigger Functions - Agilent Technologies 16712A Help Manual

Chapter 1: Agilent Technologies 16712A 128K Sample Logic Analyzer
The Trigger Tab
flow chart, with each step in the sequence being an opportunity to
direct the analyzer's selection. You can edit the overall trigger
sequence by inserting or deleting sequence steps (see page 77).
Each step in the sequence is either a predefined trigger function (see
page 82) or a user-level step (see page 89). Both the trigger functions
and user-level steps contain variables that you define. The variables,
called resource terms (see page 92), represent edges and bit patterns
in the data.
When you run the analyzer, it searches for a match between the
resource term values and the measurement data. When a match is
found, the sequencing continues to the next step, loops back (see
page 79) to a previous step, or jumps ahead to another step.
Eventually, a path of "true" steps leads to the trigger event.
Each macro uses one or more of the analyzer's internal sequence levels
(see page 89). Each user-level step uses one internal sequence level.
See Also "Understanding Logic Analyzer Triggering" on page 74 for more detail
"Setting Up a Trigger" on page 76 for actual steps

Trigger Functions

Trigger functions provide a simple way to set up the analyzer to trigger
on common events and conditions. A library of functions is available for
both state and timing measurements.
NOTE: Each trigger function requires at least one internal sequence level (see
page 89), and in some cases, multiple levels. The number of levels used by
each function is described in the references below.
Timing Trigger "Basic Timing Trigger Functions" on page 83
Functions
"Pattern/Edge Combinations" on page 84
"Time Violations" on page 85
"Timing User Level" on page 83
82
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