46
9.7
Sequencer
General Information
9.7.1
A sequencer is used for the automated control of series of images using different sets of
parameters.
m
o
z
The figure above shows the fundamental structure of the sequencer module
.
A sequence (o) is defined as a complete pass through all sets of parameters.
The loop counter (m) represents the number of sequence repetitions.
The repeat counter (n) is used to control the amount of images taken with the respective
sets of parameters.
The start of the sequencer can be initiated directly (free running) or via an external event
(trigger).
The additional frame counter (z) is used to create a semi-automated sequencer. It is ab-
solutely independent from the other three counters, and used to determine the number of
frames per external trigger event.
The following timeline displays the temporal course of a sequence with:
n = 5 repetitions per set of parameters
▪
o = 3 sets of parameters (A,B and C)
▪
m = 1 sequence and
▪
z = 2 frames per
▪
trigger
t
n = 1
n = 2
n = 3
n = 4
n = 5
n = 1
n = 2
n = 3
n = 1
n = 2
A
B
C
z = 2
z = 2
z = 2
z = 2
z = 2
Figure 36 ►
Flow chart of
sequencer.
m - number of loop
passes
n - number of set
repetitions
o - number of
sets of parameters
z - number of frames
per trigger
Sequencer Parameter:
The mentioned sets of
parameters include the
following:
Exposure time
▪
Gain factor
▪
Output line
▪
Origin of ROI (Offset X, Y)
▪
Figure 37 ►
Timeline for a single
sequence
Summary of Contents for USB3 Vision
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