Chapter 5
Image Acquisition
NI 17xx Smart Camera User Manual
5-4
ni.com
Figure 5-1 illustrates the relationship between an external trigger, a lighting
strobe, and the exposure time.
Figure 5-1.
Externally Triggered Mode
The trigger shown in Figure 5-1 represents an external trigger, configured
to use the rising edge as the active edge. The time between the active edge
of the trigger and the assertion of the lighting strobe is a user-configurable
trigger delay. The trigger delay can be configured in either milliseconds or
quadrature encoder counts. The NI 1722 does not support quadrature
encoders.
1
User-Configura
b
le Trigger Delay
2
Lighting Turn-On Time
3
Beginning of Image Readout
Trigger
Lighting
S
trobe
Expo
su
re
Im
a
ge Re
a
do
u
t
3
2
1
