Trigger Position Control - Agilent Technologies 16712A Help Manual

Trigger Position Control

The Trigger Position control, located under Sampling and also Trigger
Settings, determines how much data is stored before and after the
trigger occurs for all subsequent acquisitions. The trigger point is
placed at a specified position relative to the data in memory. The
analyzer triggers differently depending on if it is in Timing or State
mode.
Timing Mode
When a Run is started, the analyzer will not look for a trigger until at
least the proper percentage of pretrigger data has been stored. After a
trigger has been detected, the specified percentage of posttrigger data
is stored before the analyzer halts.
State Mode
When the Run is started, the analyzer immediately looks for the trigger
condition. The percentage of pretrigger data determines the
maximum amount of pretrigger data to save.
The trigger position choices are Start, Center, End, User Defined, or
Delay. Delay is only available in timing mode.
• Start
The trigger position is set at the starting point of available memory. This
process results in maximum posttrigger data and minimum pretrigger
data. Note that there will be a small amount of pretrigger data stored.
• Center
The trigger position is set at the center point of available memory. This
results in half pretrigger data and half posttrigger data.
• End
The trigger position is set at the end point of available memory. This
results in maximum pretrigger data and minimum posttrigger data. Note
that there will be a small amount of posttrigger data stored.
• User Defined
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Chapter 1: Agilent Technologies 16712A 128K Sample Logic Analyzer
The Sampling Tab
51