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10 Time Domain (Scope) Mode
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10.5 Using the trigger function
Time Domain (Scope) • Trigger Menu
I⁄Q Analyzer • Trigger Menu
The trigger function allows you to trigger a measurement when the
observed input signal meets the specified conditions. After the
measurement is triggered and the set time span has elapsed, the display is
"frozen" so you can see the signal characteristic. The Actual Trace is always
used as the signal source for trigger events, even in Long-Time Scope
mode.
You can select the following trigger types:
• Free Run: No trigger function
•
Single
: The trigger is triggered once when the trigger event occurs.
•
Multiple
: The trigger is triggered each time the trigger event occurs.
•
Time Controlled:
The measurement starts either immediately or at the
date and time set, and stops when the Time Span has elapsed.
10.5.1 Free Run
The display updates continuously.
Free Run
is displayed at the lower right
of the screen.
10.5.2 Single und Multiple
Time Domain (Scope) • Trigger Menu
I⁄Q Analyzer • Trigger Menu
These trigger types freeze the display after the first valid event (Single) or
after every new valid event (Multiple). If you select one of these trigger
types, you must then set the following functions:
•
Trigger Level:
Level activating the trigger
•
Trigger Slope:
Signal edge activating the trigger:
– Rising
– Falling
•
Trigger Delay:
Delay in activating the trigger
– Negative delay values cause the signal characteristic prior to the trigger
event to be displayed (pre-trigger).
– Positive delay values cause the signal characteristic after the delay
following the trigger event to be displayed. The trigger event is outside
the display area.