SVS-Vistek HR Series, Manual

Page: 37 / 102

SVS-VISTEK
Feature description 37
6.2.8 Tap Balancing
In sensors with multiple the tap structure, parts of the picture may appear
differently. Taps may display difference in dynamics and brightness.
To eliminate these differences, tap balancing offers gain adjustments
separately for each tap.
This is due to the requirement for a dual or quad -ADC circuit to handle
the simultaneous digitization of the two or more channels of analog
signal coming from the CCD. The fact that the separate analog output
channels not being perfectly linear and the separate output amplifiers
having physically different slopes leads to the necessity to sometimes
manually or automatically adjust the gain levels of each channel
independently to obtain a homogenous image.
Automatic Tap Balancing
Automatic Tap Balancing analyses a narrow strip at the border of the
taps. It adjusts the gain value to the average brightness value of these
strips.
C on ti n u ou s l y Ta p Ba l a n ci n g
Automatic Tap Balancing can be done continuously. Taps will be
balanced from one image to the next.
Ta p Ba l a n ci ng on ce
When performing Tap Balancing once. Only one specific image will be
analyzed. The gain-correction values will be saved and applied to
subsequent images.
Manual Tap Balancing
Tap Balancing can be performed manually
Misbalanced dual tap
image