JEOL JSPM-5200 Instructions Manual page 119

５ MEASUREMENT OPERATION
Fback Filter/Hz is the parameter that determines the response speed of the feedback
circuit. The larger the specified value, the faster the response speed, thus producing
a sharp image, but the feedback circuit easily oscillates. Usually, select the highest
speed at which the feedback circu
during scanning.
8.
C lick on the
p ull-down menu.
Loop Gain is the parameter that determines the gain of the feedback circuit. The
larger the specified value, the higher the gain and the b
which has irregularities. In this case, however, the feedback circuit easily oscillates.
9.
Click on the
Topography from the pull-down menu.
10.
Click on the Advanced button in
The Advanced Control window is displayed.
The □ or
alternately between □ and
11.
C lick on the Display Source tab, and then check the TOPO—Autoset box.
5-56
it does not oscillate while watching an image
button in the Loop Gain selection box and select 8 from the
button in the Display Source 1 selection box and select
the Advanced tab window.
check box is a toggle switch. Every time y
. The
etter the image of a specimen
ou click on it, it changes
check bo x means that it is selected.
TMPM5200-2