Basler A400K, Руководство пользователя

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Basic Operation and Features
3-12 Basler A400k
DRAFT
3.5.2 Offset
Offset on A400k cameras is adjustable within a range from 0% to 100% where 0% correspond to
an offset of 0 gray values and 100% correspond to an offset of approximately 32 gray values (8
bit output mode) or 128 gray values (10 bit output mode).
Increasing the offset by 3% will result in an increase of approximately one gray value (8 bit output
mode) or four gray values (10 bit output mode) in the average pixel value for each frame
transmitted by the camera. Decreasing the offset by 3% will result in a decrease of approximately
one gray value in the average pixel value for each frame (8 bit output mode).
The default offset is 2 gray values (8 bit output mode) or 8 gray values (10 bit output mode).
3.5.2.1 Setting the Offset
You can set the offset by using the Camera Configuration Tool Plus (CCT+) or by using binary
write commands from within your own application to set the camera’s control and status registers
(CSRs).
With the CCT+
With the CCT+ (see Section 4.1 ), you use the Offset setting in the Gain & Offset parameter group
to set the offset.
By Setting CSRs
You can set the offset by writing a value to the Raw Offset field or to the Absolute Offset field of
the Offset CSR (see page 4-22 ).
Section 4.2.2 explains CSRs and the difference between using the “raw” field and the “absolute”
field in a CSR. Section 4.3.1 explains using read/write commands.