ALLIED Vision Technologies Guppy F-503 - Manual (Page 128)

Description of the data path
GUPPY Technical Manual V7.1.0
128
Auto shutter
In combination with auto white balance, all Guppy progressive CCD and CMOS
models are equipped with auto shutter feature.
When enabled, the auto shutter adjusts the shutter within the default shutter
limits or within those set in advanced register F1000360h in order to reach
the reference brightness set in auto exposure register.
Increasing the auto exposure value increases the average brightness in the
image and vice versa.
The applied algorithm uses a proportional plus integral controller (PI control-
ler) to achieve minimum delay with minimum overshot.
Note

Guppy interlaced cameras:
Due to the fact that electronic shutter is not possible in
Format_7 Mode_1 consequently auto shutter is not useful in
that mode.
Do not use auto shutter with Guppy interlaced cameras in
Format_7 Mode_1.
Note

Target grey level parameter in SmartView corresponds to
Auto_exposure register 0xF0F00804 (IIDC).