Digital Shift; How Digital Shift Works - Basler A500k User Manual

3.8 Digital Shift

The "digital shift" feature allows you to change the group of bits that is output from the ADC. Using
the digital shift feature will effectively multiply the output of the CMOS sensor by 2 times, 4 times
or 8 times. Section
You can set digital shift using either the Camera Configuration Tool Plus (see Section 4.1) or
binary commands (see Section 4.2).

3.8.1 How Digital Shift Works

No Shift
As mentioned in Section 3.1, the A500
ADCs to digitize the output from the CMOS sensor. The
camera drops the least two significant bits from the
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 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 we 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 with
no digital shift are all below 128.
k
Basler A500
PRELIMINARY
3.8.1 describes how digital shift works.
k
uses 10 bit
Basic Operation and Features
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