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Chapter 1: Agilent Technologies 16712A 128K Sample Logic Analyzer
The Trigger Tab
Tagging Data with Time or State Tags (State
Only)
The Count field under Settings in Trigger accesses a selection menu
which is used to stamp the data at each memory location with either a
Time tag or a State Count tag. The tags reduce the memory depth by
half. To retain the full memory depth when using time or state tags
leave one pod pair unassigned.
State Count
When the State Count option is selected, numbered tags are placed on
all selected data. Pre-trigger data has negative numbers and post-
trigger data has positive numbers. You select the data to be tagged
when you turn on State Count. A field appears to the right of States
that lets you define patterns.
State tag numbering can be set either relative to the previous tagged
sample or absolute from the trigger point. Selecting Absolute or
Relative is done by toggling the Absolute/Relative field in the Listing
Display window.
Time Count
Time Count places time tags on all data. Pre-trigger data has negative
time numbers and post-trigger data has positive time numbers. Time
tag numbering is set to be either relative to the previous memory
location or absolute from the trigger point. The time tag resolution is 4
ns.
Arming Control
An instrument must be armed before it can look for its trigger. When
you Run an instrument, it is armed immediately. When using logic
analyzer modules that provide two separate analyzers, you can set one
analyzer to arm the other within the same module by selecting Arming
Control... under Settings in Trigger.
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