Canon XRD9829REF user manual

Page 11

XRD9829REF

XRD9829

VDD

VIN0 - VIN2

VRT

C

 

I

VIN0

S

 

RL

 

VIN3

5V

 

100K

34K

VRB

Figure 7. Simplified Block Diagram Showing Global Offset Adjustment by XRD9829

Using External Resistor Ladder

17.Set the dip switches to 0111000000 to select the internal offset DAC for fine offset adjustment. Push the Serial Port button. From the CAPTURE menu select SNAP SHOT. The offset should now move the output of the CIS to almost zero scale.

Please refer to data sheet for offset adjustment. A typical result of the fine offset adjustment is shown below.

Rev. 1.00

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Contents XRD9829REF XRD9829REF Block Diagram of XRD9829REF Operational Procedure Parallel Port Configurations D D D D D D D D 1 0 7 6 5 4 3 2 1 Control Register Description for XRD9829 ScanIt Software Window Before Scanning Non-calibrated Black Target Scan Black Target Scan After Global Offset Adjust XRD9829 Black Target Scan After Global and Fine Adjust VDD VRT VIN0 White Target Scan Without Gain Adjustment White Target Scan After Gain Adjustment Simplied Block Diagram Showing Gain Adjustment by XRD9829 Gray-scale Target Scan XRD9829REF XRD9829REF XRD9829REF XRD9829REF XRD9829REF XRD9829REF XRD9829REF
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