C2-2040(HS)-GigE Camera Hardware Reference Manual Rev. 1.8
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Multi-Frame Readout Mode (NDR)
With the NDR mode it is possible to readout of up to 4 images at
different exposure times. It allows the combination of profile data
from different integration levels and it ensures accurate profile
data even for difficult surfaces with strong changes in reflectance.
The following timing diagram shows the function of NDR with 2
frames, when subsequent sensor images are acquired. The
exposure times for NDR frame 1 and 2 are depicted with It1 and
It2 respectively. Please note that the readout of the second frame R2 cannot begin unless the first
frame R1 has been readout. The same applies also between two subsequent sensor images, i.e. the
first NDR frame of sensor image 2 cannot be readout unless the last NDR frame of sensor image 1
has been readout.
Trigger Sensor
Image 1
Readout
Frame 1 of
Sensor Image 1
Readout
Frame 2 of
Sensor Image 1
Trigger Sensor
Image 2
Readout
Frame 1 of
Sensor Image 2
Readout
Frame 2 of
Sensor Image 2
