之前跟陳彥穆測試Andor CCD用labview程式控制時，發現使用image readout mode再用一個sum.pgm的script

將image做vertical binning，與直接使用Andor CCD 內建之Full vertical binning readout mode，結果前者為後者十倍大左右

詢問原廠答覆如下：

The difference was made because in image mode you summed up not only signal but also noise in each pixel after readout. This didn't happen in FVB mode. And that is one of the advantages of FVB. Please have a look at

http://www.andor.com/library/digital_cameras/?app=320　（FVB的工作原理）