AW00123409000 Features
Basler ace USB 3.0 231
7.7.4.1 Sequencer Use Case Descriptions and Diagrams
The following use case descriptions and diagrams illustrate operation of the sequencer feature in
sequencer mode. The use cases refer to some common situations and combinations of parameter
settings.
These use cases do not represent every possible combination of the parameters settings
associated with the sequencer. The use cases are simply intended to aid you in developing an initial
understanding of the relation between parameter settings and sequencer operation.
In each use case diagram, the black box in the upper left corner indicates how the parameters are
set.
All trigger signals shown in the use case diagrams assume rising edge triggering. Note, however,
that the timing of triggers involving a GPIO line is tighter constrained when set for falling edge
triggering (see Section 5.10 on page 84).
The use cases assume that a total of four sequencer sets is available.
Use Case 1 - Cycling Through Sequencer Sets According to Path 1
Use case one is illustrated in Figure 89 on page 235 and assumes that the following sequencer-
related parameter values are set.
The use case diagrams are representational. They are not drawn to scale and are
not designed to accurately describe precise camera timings.
Sequencer Set Related Settings Sequencer
Set 0
Sequencer
Set 1
Sequencer
Set 2
Sequencer
Set 3
Path 0
Next sequencer set after current one 0** 0** 0** 0**
Trigger source Line 3 (GPIO) Line 3 (GPIO)* Line 3 (GPIO)* Line 3 (GPIO)*
Trigger activation Level High** Level High** Level High** Level High**
Path 1 Next sequencer set after current one 1** 2** 3** 0
Trigger source Line 4 (GPIO) Line 4 (GPIO)* Line 4 (GPIO)* Line 4 (GPIO)*
Trigger activation Level High** Level High** Level High** Level High**
Table 50: Settings for Sequencer Operation According to Use Case 1.
* Only one trigger source for a path allowed.
**Applies Always, Not Only in this Example
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