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Operation and Features
3.7.2 Digital Shift in 8 bit Output Mode
No Shift
As mentioned in Section 3.1, the A102
ADC to digitize the output from the CCD sensor.
When the camera is operating in 8 bit output mode,
by default, it drops the four least significant bits
from the ADC and transmits the 8 most significant
bits (bit 11 through bit 4).
Shift Once
When the camera is set to shift once, the output
from the camera will include bit 10 through bit 3
from the ADC.
The result of shifting once is that the output of the
camera is effectively doubled. For example,
assume that the camera is set for no shift, that it is
viewing a uniform white target and that under these
conditions the reading for the brightest pixel is 20.
If you changed the digital shift setting to shift once,
the reading would increase to 40.
Note that if bit 11 is set to 1, all of the other bits will automatically be set to 1. This
means that you should only use the shift once setting when your pixel readings in
8 bit mode with no digital shift are all below 128.
3-22
DRAFT
uses a 12 bit
k
k
BASLER A102
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