Instruction manual
Guppy PRO Technical ManualV4.1.0
87
Description of the data path
Auto gain
All Guppy PRO cameras are equipped with auto gain feature.
When enabled auto gain adjusts the gain within the default gain limits or within
the limits set in advanced register F1000370h in order to reach the brightness
set in auto exposure register as reference.
Increasing the auto exposure value (aka target grey value) increases the aver-
age brightness in the image and vice versa.
The applied algorithm uses a proportional plus integral controller (PI control-
ler) to achieve minimum delay with zero overshot.
The following tables show the gain and auto exposure CSR.
0xF0F0081C SHUTTER A_M_MODE [7] Write: set mode
Read: read current mode
0: MANUAL
1: AUTO
--- [8..19] Reserved
Value [20..31] Read/Write Value
This field is ignored when writing the value in Auto or
OFF mode.
If readout capability is not available, reading this field
has no meaning.
Note
Configuration
To configure this feature in an advanced register: See table
138.
Note
Configuration
To configure this feature in an advanced register: See table
139.
Register Name Field Bit Description
Table 46: CSR: Shutter