Sofradir 1024-20C, User Manual

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The NUC that limits spatial noise depends on the thermal conditions around the pixels. These conditions include
not only camera ambient temperature, but also effects such as the self heating generated by bias current applied
during the integration time as well as the cooling that takes place in the interval between integration cycles. While
NUC operations compensate for ambient temperature changes, this self heating and cooling is directly influenced
by variations in frame rate and is not automatically compensated for in NUC adjustments. As a result, the
External Sync control operated at rates below the specification will produce an image, but with increasing gain
and offset errors. Offset error can be compensated by 1NUC operations when performed specifically at the Frame
Rate driven by the External Sync signal. Failure to 1NUC at the current Frame Rate will result in poor imaging
when operated outside the limits.
During a 1NUC operation, the camera accumulates video frames for each pixel’s offset computation. When
performed at reduced Frame Rate, this operation takes proportionally longer to complete and may look like a non-
responsive system at really low (e.g. < 0.5HZ) external clock rates.
In applications that require minimal system delay, note that enabling the Digital Zoom function adds one Frame
delay between Detector and output Video.
10.3.3 Select Image Zoom
From the Video tab, click the bullet next to desired Zoom (1X, 2X, 3X, or 4X). The default value is 1X Zoom.
10.3.4 Zoom Window
The Zoom Window is, by default,
turned off. To begin using the Zoom
Window, you must align all the edges
of the Zoom Window frame to all four
corners of the live image (as displayed
by the four arrows). Aligning the
corners will ensure the accuracy of
your crop box.
First, click Move and drag the Zoom
frame to align the top left corner of the
box. Click
Resize , then click and drag
the frame box to align the bottom right
corner with the live image. Once your
box is set, click
Crop to select the area
you would like to zoom to. To adjust the
crop area, simply click
Crop again and re-select the area. Once you are satisfied, click Activate to initiate the
zoom. If you would like to cancel what you have done with the Zoom Window open, click Cancel .
All four
corners
aligned