CoCo-80 User Manual
88
Trigger Condition
Trigger Condition defines when a trigger is detected based on the signal level and
the slope. The four choices are:
Trigger Source > High Level (rising edge)
Trigger Source < Low Level (falling edge)
Low Level < Trigger Source < High Level (level trigger)
(Trigger Source > High Level) OR (Trigger Source < Low Level) (edge
trigger)
There are two types of trigger detection, one is called edge detection; the second
level detection. In the trigger conditions above, 1, 2 and 4 are edge detection and 3
the level detection. Edge detection compares at least two sample points against
the threshold level. Level detection only detects one sample point.
When Free Run is selected, trigger source and level are not needed.
The table below visually explains when the trigger event will happen in these four
conditions. The red mark shows the instant in time that the trigger event is
detected:
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