HP 1660CS, User Manual

Page: 267 / 347

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, and 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. Fifth, the timing terms
are not available in the first sequence level.
The following table shows how resources are divided in the logic analyzer.
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, and only one
analyzer may use a resource at a time.
Resource Combination Hierarchy
Group Pair Resource Operation Resource Pair Links Group Link
Group
1 Pair 1 Off, On, Negate a
Combine
resources
within
pairs
using
AND,
NAND, OR,
NOR,
XNOR
Off, On, Negate b
Pair 2 Off, On, Negate c
Off, In Range, Out of Range Range 1
Pair 3 Off, On, Negate d Combine
pairs
within
groups or
group 1
and group
2 using
AND or OR
Off, On, Negate Edge 1
Pair 4 Off, On, Negate e
Off, <, > Timer 1
Group
2 Pair 1 Off, On, Negate f
Combine
resources
within
pairs
using
AND,
NAND, OR,
NOR,
XNOR
Off, On, Negate g
Pair 2 Off, On, Negate h
Off, In Range, Out of Range Range 2
Pair 3 Off, On, Negate i
Off, On, Negate Edge 2
Pair 4 Off, On, Negate j
Off, <, > Timer 2
The Trigger Sequence
Analyzer resources
9-16