Sch"after+Kirchhoff SK1024U3PD Manuál s instrukcemi stáhnout pdf (Strana 11)

Page 11

3. Camera Control and Performing a Scan

Sensor Alignment

If you are operating with a linear illumination source, check the alignment of the illumination source and the sensor

prior to a shading correction, as rotating the line sensor results in asymmetric vignetting.

Sensor and optics rotated in apposition

Sensor and optics aligned

Gain/Offset Control Dialog

Cameras are shipped prealigned with gain/offset factory settings. Open the "Gain/Offset Control" dialog [Shift+F4]

to re-adjust or customize settings.

Gain/Offset Control dialog

The gain/offset dialog contains up to 6 sliders for altering gain and offset. The number of active sliders depends on

the individual number of adjustable gain/offset channels of the camera.

The 'Camera Control' frame on the right is used for commands and advanced software functions. ( 4.1 Camera

Control by Commands, p. 16)

2. Adjust channel 1 gain

and minimize difference

between channels

using Gain slider

1. Adjust channel 1 zero

level and minimize diffe-

rence between channels

using Offset slider

Offset and gain adjustment for more than one gain/offset channel

Adjustment principle

1. Offset

To adjust the zero baseline of the video signal, totally block

the incident light and enter "00" (volts) for channel 1.

For a two- or multi-channel sensor minimize any diffe-

rences between the channels by adjusting the other Offset

sliders.

A slight signal noise should be visible in the zero baseline.

2. Gain

Illuminate the sensor with a slight overexposure in order

to identify the maximum clipping. Use the Gain slider "1"

to adjust the maximum output voltage.

For a two- or multi-channel sensor minimize any diffe-

rences between the channels by adjusting the other Gain

sliders.

For the full 8-bit resolution of the camera, the maximum

output voltage is set to 255 and for 12-bit is set to 4095.

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Sch"after+Kirchhoff SK1024U3PD Manuál s instrukcemi Strana 11