Adimec Camera Link OPAL Series, Operating And Users Manual

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OPERATING AND USER MANUAL OPAL FAMILY
50
IMAGE AND DATA FORMATTING
Binning without sensitivity consequences 8.2.4.
OPTIONAL: A special non-standard feature is the Hi-Qmax option. If this option is ordered the
electronic gain in the camera will be halved when two (or more when possible) lines are vertically
binned. The following text only applies to Hi-Qmax cameras.
This option makes the sensitivity of the camera independent from the choice 1x or 2x vertical binning;
the theoretical Qmax however does alter depending on binning settings.
Combining the Hi-Qmax option with the optional 4x and 8x vertical binning and horizontal binning
leads to the following behaviour: All choices consisting of 1x or 2x horizontal binning and 1x or 2x
vertical binning have the same sensitivity. Sensitivity does increase when 4x or 8x binning is selected;
gain at these settings is not adapted, but fixed at the 2x binning value.
It is important to realize that the Hi-Qmax option does not solve any of the artifacts from par. 8.2.3.
Excessive CCD charge will still lead to blooming effects, which tend to be more visible in a Hi-Qmax
camera than in a standard camera. The Hi-Qmax option is therefore only deliverable on special
request. The Hi-Qmax option is not swichable. A camera ordered with the Hi-Qmax option will always
have the Hi-Qmax behaviour. The Hi-Qmax camera will not behave according to table 8.1, but to the
following table. Note that the charge values are theoretical values. Charges much larger than twice the
photo-pixel capacity of 18kel are in practise not transportable, so either not realizable or will result in
excessive blooming.
HBIN
FAC-
TOR VBIN
FAC-
TOR “BIN
PIXEL”
SIZE (H*V)
[MICONS] BIN PIXEL CHARGE
CORRESPONDING WITH
FULL SCALE CAMERA OUT-
PUT [KEL] PIXEL CHARGE
CORRESPONDING WITH
FULL SCALE CAMERA OUT-
PUT [KEL] SENSITIVITY,
RELATIVE TO
NO BINNING
1 1 5 x 5 18 18 1 x
1 2 5 x 10 36 18 1 x
1 4* 5 x 20 36 9 2 x
1 8* 5 x 40 36 4.5 4 x
2* 1 10 x 5 36 18 1 x
2* 2 10 x 10 72 18 1 x
*optional
Theoretical charge values of Hi-Qmax camera in binning modes Table 8.3:
Region of Interest (optional) 8.3
A Region of Interest can be selected in order to reduce the amount of data transmitted over Camera
Link; only the part of the image selected as ROI is output. Selecting a ROI does not increase the
framerate. This is due to the fact that even with a selected ROI, the sensor has to be read out
completely.
The Region of Interest can be set by the ROI command
Command syntax: ROIx;y;w;h
Where:
x = offset of the ROI relative to the left side of the image, range 0 to image width
y = offset of the ROI relative to the top of the image, range 0 to image height
w = width of the ROI, range 2 to image width
h = height of the ROI, range 2 to image height