Stereo Scan 440 - DCU

2-20 Chapter 2. Operation.
1
2
t
Select the Stigmation panel by pressing the Stig icon with the right mouse
button.
Choose a suitable field of view at about 5kX to 10kX containing a round
feature.
Focus normally to optimum focus so that the fearure does not "s~"
direction.
in any
4. Select the reduced raster icon and, using the Beam Shift function in the
Stigmation panel, bring the feature to the centre of the reduced raster.
s
6.
Press Stigmation in the navigation box and adjust for best focus.
Repeat 3 and S as necessary.
Alternative methods are provided:
A
B
c
Press Auto Stig in the Stigmation panel.
Press Stigmation on the Auto Focus/Stimgation Panel
Press Dynamic Stig and, using the mouse pointer click on the region of best
image focus using the left mouse button.
~
It
D
Press the Stig icon with the left Dk>Use button and adjust the Stig X and Stig
Y parameters as normal parameter adjustments with the mouse.
is a good idea to align the aperture correctly before adjusting stigmation.
It is generally considered easier to adjust just one stigmation area axis at a ~.
The best way to do this is to use the scroll bars for X and Y adjustment picking
up the scroll box with the mouse and dragging it to find the best stigmator
setting.
Auto Stigmation
The Auto Stigmation Correction function now perfOmlS a combined focus/stig
COn'ection. Press A on the keyboard or the Stigmation button on the Auto
Focus/Stigmation Panel (see Figure 2.3)
Stereoscan 440 Operator Manual