10.3.5
Sequential trigger mode
The two level comparators are set in a sequence in this mode. One is used to
arm the trigger detector while the other one is used to actually generate the
trigger. If the incoming signal crosses the level of the first comparator, the
second is activated (armed).
A
A
A
A
P
P
1
2
S
S
P
P
3
4
S
S
Figure 10.8:
Sequential trigger mode
A
Trigger
This mode can be used to help eliminate false triggering due to noise or
hysteresis. The concept is sometimes also referred to as a sensitivity window.
Although not very common, you can also set the level of the primary detector
to a value lower than the secondary detector. This will give you the options
shown in diagrams
3
and
4
Relevant settings for this mode:
l
Mode: sequential
l
Primary level: any value within the input range
l
Secondary level: any value within the input range
l
Direction: positive or negative for primary level; secondary level is
automatically set to the opposite direction
l
Hysteresis: any relevant value is used for both levels.
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I3763-3.1 en HBM: public
