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6.1.3. Restart continuous trigger mode
The RCT mode makes it possible to use a lens with video controlled iris for intelligent traffic
surveillance applications. TR=2. The camera is running continuously, and the iris is controlled
from the iris video output. When a trigger pulse is applied, the scanning is reset and restarted,
the previous signal is dumped with a fast dump read out, and the new triggered exposure is
started. This fast dump read out has the same effect as “smearless read out”. Smear over
highlighted areas are reduced for the triggered frame.
Trigger
SG
Exposure
Video out
Dump
Read out
Continuous video out Continuous video outTriggered
Frame
Trigger
SG
Exposure
Video out
Dump
Read out
Continuous video out Continuous video outTriggered
Frame
Fig. 10. Restart continuous trigger mode
6.1.4. PIV mode
The Particle Image Velocimetry mode can be used in applications where 2 images should be
taken with a very short time interval. TR=5. It can only be used with strobe flash or lasers as
illumination. The first accumulation time is 4 µsec. The second is as long as the time for a full
frame.
Trigger
SG
Exposure
Video out
First frame out Second frame out
Expanded view
Trigger
Exposure 1
Exposure 2
1. Flash 2. flash
4 µsec.
1.5µsec.
4 µsec.
EEN
Trigger
SG
Exposure
Video out
First frame out Second frame out
Expanded view
Trigger
SG
Exposure
Video out
First frame out Second frame out
Expanded view
Trigger
Exposure 1
Exposure 2
1. Flash 2. flash
4 µsec.
1.5µsec.
4 µsec.
EEN
Trigger
Exposure 1
Exposure 2
1. Flash 2. flash
4 µsec.
1.5µsec.
4 µsec.
EEN
Fig. 11. PIV mode