Triggers
R&S
®
RTO6
190
User Manual 1801.6687.02 ─ 05
6
Triggers
6.1
Basics of triggering
Triggering means to capture the interesting part of the relevant waveforms. Choosing
the right trigger type and configuring all trigger settings correctly allows you to detect
various incidents in analog, digital, and protocol signals.
Trigger
A trigger occurs if the complete set of trigger conditions is fulfilled. The trigger is the
determining point in the waveform record. The instrument acquires continuously and
keeps the sample points to fill the pre-trigger part of the waveform record. When the
trigger occurs, the instrument continues acquisition until the post-trigger part of the
waveform record is filled. Then it stops acquiring and waits for the next trigger. When a
trigger is recognized, the instrument does not accept another trigger until the acquisi-
tion is complete and the holdoff time has expired.
Trigger setup
A simple trigger setup includes:
●
Source of the trigger signal, its coupling and filtering
●
Trigger type selection and setup
●
Horizontal position of the trigger: see:
Chapter 5.1.3.2, "Horizontal position"
●
Trigger mode
The R&S
RTO6 provides various trigger types for troubleshooting and signal analysis,
for example, edge trigger, glitch trigger, interval trigger, pattern trigger, and much more.
For complex tasks like verifying and debugging designs, advanced trigger settings are
available:
●
Hysteresis, that is the rejection of noise to avoid unwanted trigger events caused
by noise
●
Holdoff to define exactly which trigger event causes the trigger
●
Qualification to consider the states of digital signals on other input channels and
their logical combination
●
Trigger sequences to combine two trigger type conditions
Action on trigger
A trigger can initiate one or more actions, for example, saving a screenshot or saving
waveform data. All available actions can be initiated at the same time.
Basics of triggering
