Instruction manual
Guppy Technical ManualV7.4.0
102
Description of the data path
Brightness (black level or offset)
It is possible to set the black level in the camera within the following ranges:
CCD models and Guppy F-503 (CMOS model): 0...+16 gray values (@ 8 bit)
Increments are in 1/16 LSB (@ 8 bit)
CCD models: The formula for gain and offset setting is: Y`= G x Y + Offset
Guppy F-036 (CMOS model): -127 .. 127 gray values
Increments are in 8/25 LSB
Note
• Values can only be changed within the limits of gain CSR.
• Changes in auto exposure register only have an effect
when auto gain is active.
• Auto exposure limits are 50..205. (SmartViewCtrl1
tab: Target grey level)
• Auto gain of Guppy F-036 (CMOS model) is directly con-
trolled by the CMOS sensor (the target grey level is fixed
to 125). Changes to this register have no effect in con-
junction with auto gain. Auto exposure is working in con-
junction with auto shutter only.
• Auto gain of Guppy F-503 (CMOS model) behaves like
Guppy CCD cameras.
Note
• Setting the gain does not change the offset (black value)
for CCD models.