Set exposure time: Press exptim and enter exposure time 0 seconds. The exposure time is set automatically to the minimum 0.02 sec.
Set binning: Press binni and choose 2,2 (2x2 binning)
Expose: Press dark to obtain the bias image. The image is displayed in the main camera display. If you move the mouse over the image, the x,y-position and the intensity levels are displayed in the color bar subwindow at the bottom of the main camera display (Fig. 3). Intensity levels should be 2700-2800 counts. The bias level for 2x2 binning is 275020 counts (July 2001).