Basler raL2048-48gm User Manual download pdf (Page 173)

AW00118302000 Standard Features

Basler racer GigE 163

10 Standard Features

This chapter provides detailed information about the standard features available on each camera.

It also includes an explanation of their operation and the parameters associated with each feature.

10.1 Gain and Black Level

10.1.1 Gain

The camera’s gain is adjustable. As shown in

Fig. 51, increasing the gain increases the

slope of the response curve for the camera.

This results in an increase in the gray values

output from 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 lower gray values for a

given amount of sensor output.

Increasing the gain is useful when at your

brightest exposure, the highest gray values

achieved are lower than 255 (for pixel data

formats with 8 bit depth) or 4095 (for pixel

data formats with 12 bit depth). For example,

if you found that at your brightest exposure

the gray values output by the camera were no

higher than 127 (in an 8 bit format), you could

increase the gain to 6 dB (an amplification

factor of 2) and thus reach gray values of 254.

You can use the analog gain for coarsely setting gain and the digital gain for finer adjustment.

Fig. 51: Gain in dB

Gray Values

(12-bit)

(8-bit)

Sensor Output Signal (%)

1 2 ... 168 169 170 171 172 173 174 175 176 177 178 ... 237 238

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Basler raL2048-48gm User Manual Page 173