Digital Shift In 8 Bit Output Modes - Basler L100k User Manual

Operation and Features

3.7.2 Digital Shift in 8 bit Output Modes

No Shift
As mentioned in Section 3.1, the L100
ADCs to digitize the output from the CCD sensor. When
the camera is operating in 8 bit output mode, by default,
it drops the least two significant bits from each ADC and
transmits the 8 most significant bits (bit 9 through bit 2).
Shift Once
When the camera is set to shift once, the output from
the camera will include bit 8 through bit 1 from each
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 9 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.
3-26
DRAFT
uses 10 bit
k
ADC
bit bit bit bit bit bit bit
9 8 7 6 5 4 3
M
S
B
Not Shifted
ADC
bit bit bit bit bit bit bit
9 8 7 6 5 4 3
M
S
B
Shifted Once
BASLER L100
bit bit bit
2 1 0
L
S
B
bit bit bit
2 1 0
L
S
B
k Series