Front Panel Key Reference RIGOL
User’s Guide for DSA1000 Series
2.2.4 Trig
Sets the trigger type and other associated parameters.
2.2.4.1 Trig Type
The trig type can be Free Run, Video or External. In each type of Trig, there will be a
related parameter icon shown on the left of screen such as:
1. Free Run
This indicates all trigger conditions can be satisfied at any time and the analyzer
generates trigger signals continuously.
2. Video
This indicates a trigger signal will be generated when the system detects a video
signal in which the voltage exceeds the specified video trigger level. This function
is invalid in one of the three conditions which are non-zero span mode, RMS Avg
detection and Voltage Avg detection.
3. External
In this mode, an external signal (TTL signal) is input from the [TRIGGER IN]
connector at the rear panel, of which the edge conditions should meet with the
user settings to generate trigger signals.
2.2.4.2 Trig Setup
1. Trigger Level
Sets the trigger level in Video mode. The screen will display corresponding line TL
and the value of it after you finish the setting. The numeric keys, knob or
direction keys is available for level modification, please refer to “Parameter
Input” for more details.
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