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1. One of the thresholds (or): the first achieved condition activates the trigger
2. All thresholds (and): all conditions must be simultaneously achieved to validate the trigger
3. Slope (ou): trigger on the slopes of the signals; the first achieved condition validates the trigger
12.1.3 Example
The trigger displayed above is:
Trigger if
Channel 1 decreasing and equal to threshold S1, value 1V
Channel 2 decreasing and equal to threshold S1, value -1V
The same interpretation is valid for the AND trigger (all thresholds).
OR
12.1.4 Parasites
You can trigger a parasite with a periodic 50Hz signal: trigger when the shape of the signal radically changes:
•
parasite impulsion >200µs
•
sudden change of frequency
Figure 12.4
12.1.5 Trigger on Logic Channels
After selection of the trigger on Logic Channels, the window allows you to set the trigger condition.
The 16 logic channels can be used in the trigger word:
•
either active at status 0 (less than 1.6 volt)
•
or active at status 1 (more than 4.0 volts)
•
or non used X
•
AND / OR: the logic function AND / OR is applied to each channel
•
Type: edge or level: the trigger is applied on an edge (change of value) or a level
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