HP 16500B User Manual page 130

Logic analysis system
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Glossary
touch-sensitive screen
Any dark-blue
field on the
screen is a
"selectable"
field. When
you touch a
dark-blue
field, the field
toggles to
another
option, a pop-
up menu
appears, or
the field turns
light-blue to
activate the
control knob
on that field.
trigger
Trigger is a
reference
event around
which you
want to gather
information.
In the
analyzer, you
might want to
trigger on a
glitch in
hardware or
entry to a
subroutine in
software.
When
beginning,
you might
want to
Glos sary12
trigger on the
first
occurrence of
any kind
(trigger on
"anystate").
As you learn
more about
the problem
you are trying
to isolate, you
may enter
more specific
trigger
conditions.
When you
want to gather
a continuous
stream of
activity
leading up to
a system
crash, you will
want to
trigger on "no
state." Note
that some
microprocesso
rs fetch
instructions
on 32-bit
boundaries. If
you are
tracing
activity of one
of these
processors,

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