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Awaiba Dragster V3-8K-3.5, Руководство по калибровке

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Awaiba Dragster V3-8K-3.5 Скачать руководство пользователя страница 6

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DRAGSTER

CONFIDENTIAL

DATE:

25/06/09

DRAGSTER Evaluation

Version 0.0.04

PAGE:

6/6

Figure 4: ADC gain calibrated

Содержание Dragster V3-8K-3.5

Страница 1: ...i d e n t i a l C o n f i d e n t i a l DRAGSTER CONFIDENTIAL DRAGSTER Calibration Revision 0 0 04 Date 25 06 09 Contact AWAIBA GmbH Am Wegfeld 30 90427 Nurnberg Germany www awaiba com 1 Introduction DATE 25 06 09 DRAGSTER Evaluation Version 0 0 04 PAGE 1 6 ...

Страница 2: ... the other versions 3 Calibration The final goal of the calibration is to tune the ADC offset and gain error between segments so than we get a uniform image out of the sensor For that 2 steps are necessary One calibration step without light and another with the light preferentially green 520nm at about 80 of saturation The image histogram is the guide over all the calibration process Before starti...

Страница 3: ...image histogram If it is clamped to zero decrease the black level in All segments and send this register If both segments are far away from zero increase the black level until one of the histograms start getting close to 0 After this the histogram should look like this Now the fine tuning has to adjust the higher histogram to go over the other For this we need to identify which of them is the high...

Страница 4: ...condition and adjust the black level to the smallest output value over 0 like described in this document Avoid any pixel value of 4DN i e the lowest ADC output value 3 Set in Control 2 Write Offset bit to 1 Click Send 4 Using Control 1 send the Update request on 1 Click Send The image will ALWAYS freeze i e is not light sensitive and the new acquired values are written to the internal offset regis...

Страница 5: ...uld look like this Use the 4K_1 SPI and 8K_1 SPI to fine tune the Inverse ADC gain of the individual segments Set again a value 10 of what was set in the Inverse ADC gain of All segments so that we can identify which segment to tune Once the histograms are one over the other the calibration is done and the sensor shows a good response over all range just with the remark that the saturation level i...

Страница 6: ... o n f i d e n t i a l C o n f i d e n t i a l C o n f i d e n t i a l C o n f i d e n t i a l C o n f i d e n t i a l C o n f i d e n t i a l DRAGSTER CONFIDENTIAL DATE 25 06 09 DRAGSTER Evaluation Version 0 0 04 PAGE 6 6 Figure 4 ADC gain calibrated ...

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