Instruction manual

Description of the data path

Guppy PRO Technical Manual V2.0.3

Manual gain

Guppy PRO cameras are equipped with a gain setting, allowing the gain to be

manually adjusted on the fly by means of a simple command register write.

The following ranges can be used when manually setting the gain for the ana-

log video signal:

Brightness (black level or offset)

It is possible to set the black level in the camera within the following ranges:

0 ... +16 grey values (@ 8 bit)

Increments are in 1/64 LSB (@ 8 bit)

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. (SmartViewCtrl1

tab: Target grey level)

Type Range Range in dB Increment length

Guppy PRO CCD cameras 0 ... 680 0 ... 24.4 dB ~0.0359 dB/step

Guppy PRO F-503

(CMOS camera)

8 ... 32

33 ... 48

0 ... 12 dB

12.56 ... 18.06 dB

~0.5 dB/step

~0.56 dB/step

Table 42: Manual gain range of the various Guppy PRO types

Note



• Setting the gain does not change the offset (black

value)

• A higher gain produces greater image noise. This

reduces image quality. For this reason, try first to

increase the brightness, using the aperture of the cam-

era optics and/or longer shutter settings.

Note



• Setting the gain does not change the offset (black

value).