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Xrd9829ref – Canon XRD9829REF User Manual

Page 11

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XRD9829REF

11

Rev. 1.00

RL

VRT

VRB

VDD

VIN0 - VIN2

XRD9829

C

I

S

VIN0

VIN3

5V

100K

34K

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.