Solar - B EIS


EIS  CCD Electrical Design Functionality
 


The following table lists the functionality of the Read Out Electronics (ROE).


Functionality Comments
. .
Circuitry .
ADC resolution - 14 bit The full well capacity of the CCD is about 100,000 electrons. To ensure that as much of the dynamic range of the CCD can be sampled a 14 bit ADC will be used.
Time resolution - 2us per pixel A readout rate of 2us per pixel will be adopted.
CCD flush/dump unwanted rows .
Read out from left/right amplifier or both simultaneously .
Programmable bias voltages to minimize potential radiation induced changes Vrd, Vod and Vss.
. .
Imaging modes .
One region of interest can be defined Window height and width must be the same on both CCDs.
Binning Available in both horizontal (spectral) and vertical (spatial) directions. Maximum binning range no more than 5x5. The slot facility on EIS minimizes the need for binning.
Integration time controlled by ICU There is a default mode of operation clocking out every 10 seconds to allow images to be taken even if the command link from the camera to the ICU is lost.
Overclocking There are 50 "lead in" pixels before each amplifier which can be read in a diagnostic mode.
. .
Other Features .
Test ports will be available to test the Read Out Electronics without the need for ICU control. .
A Stim pattern will be available for ground testing. .

 
 
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This page was prepared by Chris McFee