User manual

Triggers

R&S

RTO

80User Manual 1316.0827.02 ─ 06

Absolute hysteresis

Defines a range in absolute values around the trigger level. If the signal jitters inside this

range and crosses the trigger level thereby, no trigger event occurs.

SCPI command:

TRIGger<m>:LEVel<n>:NOISe:ABSolute on page 483

Relative hysteresis

Defines a range in divisions around the trigger level. If the signal jitters inside this range

and crosses the trigger level thereby, no trigger event occurs.

SCPI command:

TRIGger<m>:LEVel<n>:NOISe:RELative on page 483

Couple levels (Trigger level and hysteresis coupling)

Sets the trigger levels and hysteresis values for all channels to the values of the currently

selected trigger source. The function affects only the levels defined for the selected event

(A-, B-, or R-event). The hysteresis of the external trigger input is an independent value,

and it is not affected by level coupling.

In trigger sequences, event coupling of trigger levels is possible: "Couple levels of all

events" on page 82

SCPI command:

TRIGger<m>:SCOupling on page 456

3.3.4 Sequence

A trigger sequence consists of at least one trigger event and additional conditions defining

when the trigger occurs.

The simple sequence "A only" contains an A-event and the holdoff setting as optional

condition.

The complex trigger sequence "A → B → R" consists of two events - A and B - and an

optional reset condition. After the A-event conditions have been met, the B-event with

independent conditions is enabled. A- and B-events are configured in the same way.

Without any reset, the instrument waits until one or a specified number of B-events occurs

that causes the trigger, and then the sequence starts again. If you expect, for example,

an irregular B-trigger event, you can configure a reset condition to restart the sequence

with the A-event. The reset condition can be a simple timeout, or a trigger event that is

defined in the same way as the A- and B-trigger events.

The instrument checks the trigger settings for compatibility and disables settings that do

not fit the previous settings in the sequence.

See also: chapter 3.2.4, "Setting Up a Trigger Sequence", on page 56.

3.3.4.1 A Only

The "A only" sequence contains an A-event and the holdoff setting as optional condition.

Reference for Triggers