HP 54620A User's And Service Manual page 69

Making Analyzer Measurements
Trigger types
Figure 14
Shows the current
definitions of all
pattern and edge
terms, and input
activity
Advanced Trigger Setup (with Overview On)
68
Shows the first
source selection
Select Define the
the first required
source pattern or
edge
qualifier
Shows the
currently selected
source operator
Choose For unary operators,
the you set the operator
trigger parameters (duration
operator or occurrence count)
here— for binary
operators, you select
the second source and
define pattern or edge
requirements.
Shows the second
source selection (valid
only with operators
requiring two sources)
Toggles
the
trigger
overview
window