Basler A400K Manual de usuario Pagina 144

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Features
136 Basler aviator Camera Link
Shift by 2
When the camera is set to shift by 2, the output from
the camera will include bit 9 through bit 0 from each
ADC.
The result of shifting twice is that the output of the
camera is effectively multiplied by 4.
If the pixel values being output by the camera’s
sensor are high enough to set bit 10 or bit 11 to 1,
we recommend not using shift by 2. If you do
nonetheless, all bits output from the camera will
automatically be set to 1. Therefore, you should only use the shift by 2 setting when your pixel
readings with a 10 bit pixel format selected and with digital shift disabled are all less than 256.
Shift By 3
When the camera is set to shift by 3, the output
from the camera will include bit 8 through bit 0
from each ADC along with a zero as an LSB.
The result of shifting 3 times is that the output of
the camera is effectively multiplied by 8.
When the camera is set to shift by 3, the least
significant bit output from the camera for each
pixel value will be 0. This means that no odd
gray values can be output and that the gray
value scale will only include values of 2, 4, 6, 8, 10, and so on. This absence of some gray values
is commonly referred to as "missing codes".
If the pixel values being output by the camera’s sensor are high enough to set bit 9, bit 10, or bit 11
to 1, we recommend not using shift by 3. If you do nonetheless, all bits output from the camera will
automatically be set to 1. Therefore, you should only use the shift by 3 setting when your pixel
readings with a 10 bit pixel format selected and with digital shift disabled are all less than 128.
Shift By 4
When the camera is set to shift by 4, the
output from the camera will include bit 7
through bit 0 from each ADC along with 2
zeros as LSBs.
The result of shifting 4 times is that the
output of the camera is effectively
multiplied by 16.
When the camera is set to shift by 4, the 2
least significant bits output from the
camera for each pixel value will be 0. This means that the gray value scale will only include every
4th gray value, for example, 4, 8, 16, 20, and so on.
ADC
Shifted Twice
M
S
B
L
S
B
bit
0
bit
1
bit
2
bit
3
bit
4
bit
5
bit
6
bit
7
bit
8
bit
9
bit
10
bit
11
ADC
Shifted Three Times
M
S
B
L
S
B
bit
0
bit
1
bit
2
bit
3
bit
4
bit
5
bit
6
bit
7
bit
8
bit
9
bit
10
bit
11
"0"
ADC
Shifted Four Times
M
S
B
L
S
B
bit
0
bit
1
bit
2
bit
3
bit
4
bit
5
bit
6
bit
7
bit
8
bit
9
bit
10
bit
11
"0" "0"
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