Guppy PRO Technical Manual
V4.1.2
104
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A brighter image, resulting in an improvement in the signal-to-noise ratio
of the image (depending on the acquisition conditions)
Signal-to-noise ratio
(SNR) and
signal-to-noise separation
specify the quality of
a signal with regard to its reproduction of intensities. The value signifies how
high the ratio of noise is in regard to the maximum achievable signal intensity.
The higher this value, the better the signal quality. The unit of measurement
used is generally known as the decibel (dB), a logarithmic power level. 6 dB is
the signal level at approximately a factor of 2.
However, the advantages of increasing signal quality are accompanied by a
reduction in resolution.
Only Format_7
Binning
is possible only in video Format_7. The type of binning used depends
on the video mode.
Types
In general, we distinguish between the following types of binning
(H = horizontal, V = vertical):
•
2 × H-binning
•
2 × V-binning
•
4 × H-binning (Guppy PRO F-503B, F-503C)
•
4 × V-binning (Guppy PRO F-503B, F-503C)
and the full binning modes:
•
2 × full binning (a combination of 2 × H-binning and 2 × V-binning)
•
4 × full binning (a combination of 4 × H-binning and 4 × V-binning) (Guppy
PRO F-503B, F-503C)
For Guppy F-503 there are also mixed modes via mode mapping available:
For example:
•
4 × H-binning 2 × V-binning
•
2 × H-binning 4 × V-binning
to and many other mixed modes. For more information see the mapping table
of possible Format_7 modes on page
Vertical binning
Light sensitivity
Vertical binning increases the light sensitivity of the camera by a factor of two
(monochrome CCD models). Guppy PRO F-503B and F-503C have only
averaged binning (low-noise binning) without any increase in light sensitivity.
In the
CCD
sensors, this is done directly in the horizontal shift register of the
monochrome sensor.
With the
CMOS
sensor of Guppy PRO F-503B and F-503C, monochrome and
color binning is possible. The monochrome CMOS sensor of Guppy PRO F-503B
uses the same binning patterns as the color version.
Format_7 Mode_2
By default and without further remapping use
Format_7 Mode_2
for
2 × vertical binning.
This reduces vertical resolution, depending on the model.
