Concepts

Where <TERM> can be a single value on a set of labels, any value within a range of values on a set of labels, or a glitch or edge transition on a bit or set of bits.

Limitations Affecting Use of Analyzer Resources

There are limitations on the way resources can be combined to form complex pattern expressions. Resources are combined in a four-level hierarchy. First, resources are divided into two groups. The groups can be combined with AND or OR. Second, within these groups, resources are combined into pairs. Pairs can also be logically combined using AND or OR. Third, individual resources are combined into pairs using AND, NAND, OR, NOR, XOR, NXOR. Fourth, individual resources may be included or excluded from participating in a pattern expression. You can also include the logical negation of the resource.

The following table shows how resources are divided in the

HP 16550A. Remember that some resources may not be available, depending on the analyzer configuration. For example, if you are using the analyzer as a state analyzer, the Edge1 and Edge2 resources are not available. If the timers are off, the Timer1 and Timer2 resources are not available.

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