Low Smear Trigger (Mode 13) - FLIR GRASSHOPPER 3 Series Technical Reference

7.1.5

Low Smear Trigger (Mode 13)

Trigger Mode 13 is a reduced smear imaging mode.
Smear reduction works by increasing the speed of the vertical clock near the end of the integration cycle. This step
is also known as fast dump. Since the clock speed has been increased, this reduces the time each pixel data has
to collect smear while it passes through the vertical shift register.
This trigger mode behaves similarly to
fast dump off the CCD. The fast dump period is followed by exposure, which is controlled by the Shutter settings.
The length of the fast dump period is determined by the trigger delay.
For other methods to minimize smear, see
2/10/2017
©2013-2017
FLIR Integrated Imaging
Solutions Inc. All rights reserved.
Standard External Trigger (Mode
Smear Reduction.
Figure 7.4: Trigger Mode 13 ("Low Smear Trigger Mode")
Registers—TRIGGER_MODE: 830h
Presence [0]
ON [6]
Polarity [7]
Source [8-10]
Value [11]
Mode [12-15]
Parameter [20-31]
®
Grasshopper 3 PGE Technical Reference
0), except the trigger input first activates a
1
1
Low/High
GPIO Pin
Low/High
Trigger_Mode_13
None
7 Image Acquisition
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