ACQUIRING DATA
iKon-L SECTION 5
Page 76
5.14 - HORIZONTAL PIXEL SHIFT
5.14.1 - Horizontal Pixel Shift Readout Rate
The Horizontal Pixel Shift Readout Rate defines the rate at which pixels are read from the shift register. The
faster the Horizontal Readout Rate the higher the frame rate that can be achieved. Slower readout rates will
generate less noise in the data as it is read out. The rate can be selected from a drop-down list on the Setup
Acquisition dialog box and the options are as follows:
• 50 kHz at 16-bit
• 1 MHz at 16-bit
• 3 MHz at 16-bit
• 5 MHz at 16-bit
5.14.2 - Pre-Amplifier Gain
Pre-Amplifier gain determines the amount of gain applied to the video signal emerging from the CCD and
allows the user to control the sensitivity of the camera system. Depending on the system there are up to three
options available. They are again selected from a drop-down menu, e.g.:
These normalized gain settings will correspond to system sensitivities specified on the performance sheets (in
terms of electrons per A/D count) which accompany the system.
Selecting higher pre-amplifier gain values (i.e. x2 or x4) will increase the sensitivity of the camera (i.e. fewer
electrons will be required to produce one A/D count) and provide the lowest readout noise performance.
However this may result in the A/D converter saturating before the single pixel / register capacity of the CCD
sensor is reached.
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