17
Configure black level
Figure 3-26
Gain
3.10
Gain contains analog gain and digital gain. Analog gain can amplify the analog signal, and digital
gain can amplify the signal after ADC (Analog to Digital Conversion).
Analog gain amplifies the signal, with higher value comes the stronger gain, higher brightness and
more noise. Digital gain amplifies signals after ADC, same as analog gain, the higher the value, the
stronger the gain, the higher the brightness and the more the noise. Compares to analog gain, the
noise of digital gain is even more.
3.10.1
Analog Gain
Analog gain parameter settings include
Off
,
Once
and
Continuous
.
Table 3-5
Working principle of gain
Analog Gain Mode
Parameter Working Mode
Manual
Off
Adjusts analog gain based on the set value of
GainRaw
.
Automatic once
Once
Runs analog gain adjustment automatically for a period
and then stops based on the current situation.
Continuous
Continuous
Runs analog gain adjustment continuously and
automatically based on the current situation.
Select GainAuto mode.
GainAuto mode
Figure 3-27
3.10.2
Digital Gain
Set the DigitalShift parameter among 0–4. The higher the value, the stronger the gain, the higher
the brightness and the more the noise.