Trigger Add-Ons; Slope Detector - HBM Genesis GEN5i User Manual

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10.4

Trigger add-ons

The mentioned trigger modes can be combined with a variety of extra features,
allowing to trigger on almost any signal.
Some of these extras are used to fine-tune the selected trigger mode, other
features expand the capabilities of the basic trigger detector.
The following simplified diagram is from the settings sheet and shows the
building blocks that make the complete channel trigger logic.
Figure 10.8: Channel trigger logic
A To recorder trigger
From left to right the following add-ons are available:
Slope detector: allows to trigger on a slope instead of level
l
Pulse qualifier: detects or rejects trigger conditions that meet a specific time
l
frame
Holdoff: disables the trigger detector for a set period of time after a trigger
l
condition
Interval: defines a time interval between two consecutive trigger conditions
l
Events: counts the number of trigger conditions before an actual trigger is
l
generated
10.4.1

Slope detector

All trigger functions described so far work on the absolute level of the incoming
signal. The slope detector allows the same functions to work on the
difference between a number of samples. This means that the triggering is not
reacting to specific levels but to the differentiated signal or slope. The slope
detector is also known as differentiator or dY/dt detector. Within the GEN series
'dt' is variable (delta time window) and can be set between 1 and 1023 samples,
e.g. between 1 μs and 1.023 milliseconds when sampling at 1 MS/s.
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