Red Pitaya HAMlab User Manual page 57

The Trigger is used to enable the scope to display changing waveforms to be displayed on the screen of the scope in a
steady fashion. The parameter Source defines the trigger source used for this. The trigger source can be input channel
1 (IN1) or input channel 2 (IN2) or an external source. The available settings are the following:
• LEVEL Trigger level value is used to determinate at which value of signal amplitude the trigger condition will
be satisfied(true). When signal amplitude achieves/cross this value the trigger state is set to "true". Following
"true" trigger condition the acquisition and signal plotting will be executed.
• EGDE Since during the time sweep(acquisition) signal amplitude can cross trigger level from higher value to
the lowest one or vice versa. The edge setting will determinate at which case the trigger condition will be set to
"true".
• NORMAL The acquisition(trace (re)plotting) is executed only if the trigger state is "true". In other words;
signal needs to satisfy trigger condition in order to be acquired and (re)plotted by the Oscilloscope.
• SINGLE After trigger conditions are satisfied by the observed signal the acquisition is executed only once and
trace re-plotting is stopped regardless of the repetitive "true" trigger states.
• AUTO Trigger state and conditions are disregarded. Signal acquisition and signal trace re-plotting are executed
in repetitive(continuous) manner. This setting is default one.
• STOP Pause triggers.
• RUN Starts/continues triggering.
The Source parameter defines the source used for this purpose. With the IN1 or the IN2 the signal at the respective
input is selected; with the EXT you can invoke the trigger from outside through external BNC input connector located
on front pannel indicated with EXT TRIG.
3.1. Oscilloscope with Signal Generator
HAMlab, Release 1.0
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