Andor Technology iXon Ultra 897 User Manual page 70

The Accumulate acquisition mode allows you to add together in computer
memory, the data from a number of scans to create an 'accumulated scan'.
Exposure Time
Accumulation Cycle Time
You may key in the following information on the Setup Acquisition Dialog Box:
• Exposure Time in seconds - i.e. the time during which the CCD collects
light prior to readout. The system will default to a minimum Exposure Time
should you attempt to enter too low a value.
• Accumulate Cycle Time - i.e. the period in seconds between each scan.
(This parameter is only available if you have selected the internal trigger - see
Trigger Modes later in this section.)
• Number of Accumulations - i.e. the number of scans you want to add
together.
Note: This mode is used to improve the signal to noise ratio.
SETTING THE AQUISITION
Accumulate
Exposure Time = 0.3 s
Accumulate Cycle Time = 1.5 s
No. of Accumulations = 3
e.g.
Section 4 . 5
Page 70
Accumulate