53
8.4.4 Trigger
Trigger signals are used to synchronize the camera exposure and a machine cycle or, in
case of a software trigger, to take images at predened time intervals.
Trigger (valid)
Exposure
Readout
Time
A
B
C
Different trigger sources can be used here.
8.4.5 Trigger Source
p
h
o
t
o
e
l
e
c
t
r
i
c
s
e
n
s
o
r
t
r
i
g
g
e
r
s
i
g
n
a
l
p
r
o
g
r
a
m
m
a
b
l
e
l
o
g
i
c
c
o
n
t
r
o
l
l
e
r
o
t
h
e
r
s
s
o
f
t
w
a
r
e
t
r
i
g
g
e
r
H
a
r
d
w
a
r
e
t
r
i
g
g
e
r
VEXU
VEXG
Each trigger source has to be activated separately. When the trigger mode is activated,
the hardware trigger is activated by default.
▲Figure32
Trigger signal, valid for
Baumer cameras.
high
low
U
0.8V
◄Figure33
Camera in trigger
mode:
A - Trigger delay
B - Exposure time
C - Readout time
Trigger Delay:
The trigger delay is a
exible user-dened delay
between the given trigger
impulse and the image cap-
ture. The delay time can be
set between 0.0 μsec and
2.0 sec with a stepsize of
1 μsec.
◄Figure34
Examples of possible
trigger sources.