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AT-200GE
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9.7.7 Smearless mode
This function can be used to reduce the smear coming from bright areas of the image. This is
effective for both EPS and PWC trigger modes. Before accumulation starts, the charge that is
stored in the pixel is dumped by a high-speed transfer. This can reduce the smear that
appears above the bright area but smear below the area is unaffected.
At the falling edge of the trigger pulse the high speed transfer starts. This period is 7.31ms
which is 141L. Thereafter the residual charge in the horizontal CCD register is read out in 1L
and the new exposure starts. This function is available for both full scan and partial scan.
Fig.50 Smearless mode (in the case of PWC)