Analyzer Resources - HP 1660CS-Series User Manual

The Trigger Sequence

Analyzer resources

Analyzer resources
The sequence-advance, sequence-else, storage, and trigger-on specifications
are set by a combination of up to 10 pattern terms, 2 range terms, 2 timers,
and 2 edge terms (timing analyzer only). A resource can only be assigned to
one analyzer at a time.
10 pattern terms The pattern terms, a through j, represent single
states to be found on labeled sets of bits. For example, you could have an
address on the address bits or a status on the status bits, or both the
address and status occurring together. Pattern terms AND conditions
occurring on separate labels.
2 timers You can start, stop, continue, or pause the timers upon entry
to a sequence state, then use a comparison of current timer value against
a preset value to determine whether to branch to another state.
2 range terms The range terms, Range1 and Range2, represent ranges
of values to be found on labeled sets of bits. For example, you could have
a range of addresses to be found on the address bus or a range of data
values to be found on the data bus. Range terms are satisfied by any
value within the range for "In_Range," and any value outside the range
for "Out_Range."
2 edge terms (timing analyzer only) The edge terms, Edge1 and
Edge2, represent edges. The edge terms can be set to catch glitches
even when the timing analyzer is not in glitch mode. When an edge term
comprises more than one channel, it ORs the channel conditions together
and any of the specified transitions satisfy the term.
You can combine the pattern terms and range terms with logical operators to
form complex pattern expressions in the sequence-advance, sequence-else,
and TRIGGER on specifications.
For example,
• •
Find "(<TERM1> <TERM2>) + (<TERM3> <TERM4>)"
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.
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