UVITEC Cambridge FIREREADER MAX, Руководство пользователя и обслуживания

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UVITEC – Cambridge
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The full resolution is the native camera image.
The High sensitivity and Super sensitivity modes increase the sensitivity without affecting the image
resolution using the HSR-High Sensitivity Reading technology. The High sensitivity mode combined
the HSR-High Sensitivity Reading technology and binning 2x2.
The binning technique combines the charge from adjacent pixels so that the total charge can be
read-out as a single pixel. The result is an increased signal and thus an improved sensitivity and a
better signal-to-noise ratio. This allows reducing the exposure time. The reduction of the amount of
pixels improved the frame rate of the image acquisition. However, the image resolution is decreased
by the binning factor (i.e: 4 for a binning of 2 by 2).
A 2x2 binning factor means that pixels in two rows and two columns (a total of 4 pixels) are
combined to be represented as one pixel. The sensitivity is heightened but the resolution is then
divided by 4.
Aperture (Auto series only)
This option defines the aperture to be used for image acquisition. For UV Fluorescence, the aperture
should be set at f4.
Extended resolution
The effective pixels technology allows the extension of the camera native image resolution by
software interpolation.
Note: This process requires important computer calculation and some time could be necessary
before the extended image is displayed.
Auto-exposure set-up
Test time
In order to calculate an ideal exposure time, the software needs to analyze a test image, taken in
binning mode with a test exposure time. Then it searches for the minimum and maximum acceptable
grey levels and calculate the exposure time so the highest grey levels values of the final image reach
a maximum defined (Saturation Value).