Standard Features; Gain - Basler Pioneer User Manual

Standard Features

13 Standard Features
This section provides detailed information about the standard features available on each camera.
It also includes an explanation of the operation and the parameters associated with each feature.

13.1 Gain

The camera's gain is adjustable. As shown in
Figure 45, increasing the gain increases the
Gray Values
slope of the response curve for the camera.
This results in a higher gray value output from (12-bit) (8-bit)
the camera for a given amount of output from
the imaging sensor. Decreasing the gain
decreases the slope of the response curve
and results in a lower gray value for a given
amount of sensor output.
Increasing the gain is useful when at your
brightest exposure, a gray value lower than
255 (in modes that output 8 bits per pixel) or
4095 (in modes that output 12 bits per pixels)
is reached. For example, if you found that at
Sensor Output Signal (%)
your brightest exposure the gray values
output by the camera were no higher than
Fig. 45: Gain in dB
127 (in an 8 bit mode), you could increase the
gain to 6 dB (an amplification factor of 2) and
thus reach gray values of 254.
As mentioned in the "Functional Description" section of this manual, for readout purposes, the
sensor used in the camera is divided into two halves. As a result of this design, there are three gain
adjustments available: Gain Raw All, Gain Raw Tap 1, and Gain Raw Tap 2.
Gain Raw All is a global adjustment, i.e., its setting affects both halves of the sensor.
Gain Raw Tap 1 sets an additional amount of gain for the right half of the sensor. The total gain for
the right half of the sensor will be the sum of the Gain Raw All value plus the Gain Raw Tap 1 value.
Gain Raw Tap 2 sets an additional amount of gain for the left half of the sensor. The total gain for
the left half of the sensor will be the sum of the Gain Raw All value plus the Gain Raw Tap 2 value.
For each camera model, the minimum and maximum allowed Gain Raw and Gain Total settings are
shown in the tables below:
Basler pioneer 177