15
3.4.2.2
Frequency Division and Multiplication Control
3.4.2.2.1
Introduction
You can manage the frequency division and multiplication function of the signal source. For signal
sources after frequency division, the frequency will become slow. For signal sources after frequency
multiplication, the frequency will become faster. When external signals trigger the camera to start
working, the image effect might be poor, or the image might be severely stretched or compressed.
The frequency division and multiplication function can be used to adjust signal frequency to
increase or decrease line scan rate.
Frequency division and multiplication
Figure 3-17
3.4.2.2.2
Operation
The image line height is 2048, the theoretical line frequency is 28000, and the frame rate is 0.5 fps.
The image is severely compressed. The line scan rate (2048) of trigger signal is lower than movement
speed of object, and cannot be changed. You can adjust the image by adjusting the frequency
multiplication index.
Image compression
Figure 3-18
Select frequency controller from
FrequencyConverterSelector
.
Step 1
Select signal source from
InputSource
.
Step 2
Set
Divider
value (frequency division index) and
Multiplier
value (frequency multiplication
Step 3
index).
Frequency adjustment
Figure 3-19
Set a proper multiplier value (13) to increase the trigger line scan rate 26624 (2048 × 13).
Step 4
