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Stereo Scan 440 - DCU

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Figures 9,10,11,12 Emission Images<br />

~<br />

~<br />

Changes to the filament current will be implemented slowly in order to<br />

safeguard the filament.<br />

Use the Gun TOt conttol to position the emission image in the centre of the<br />

screen. Then with the magnification set to very low and Optibeam depth mode<br />

selected, re-centre the emission image using the Gun shift conttols. Turn off<br />

Optibeam depth mode and increase the magnification and fe-check the position<br />

of the emission image, if necessary make adjustments using the Gun TOt<br />

conttols. When the alignment has been completed the emission image mode can<br />

be turned off by selecting the Nonnal button within the Gun Align panel.<br />

<strong>Stereo</strong>scan <strong>440</strong> Operator Manual

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