JEOL JSPM-5200 Instructions Manual page 288

• Autose
Whe
automatically applied so that the
volt
that
chec
+10 V
0
− 10 V
Bec
upper-left corner of the image) attains a
If the initial position is extremely high or low, or if the specimen is tilted, the image
could become white or black during scanning. In such a case, set Offset/V manu-
ally.
TMPM5200-2
t
n the Autoset check box is checked for source si
s. If the voltage of the source signal is positive (+), an offset voltage is added so
the voltage at that positive position beco
k box for use.
Display area
ause of this, the display area starting from the initial position (usually, the
+ 10 V
Initial position
Offset
0
− 10 V
If the Enable Pre-Scan check box is checked, and the Autoset check box is
checked for the source signal, the software will automatically adjust the offset
so as to obtain the optimum gain from the result of Pre-Scan.
Even if the Enable Pre-Scan check box is not checked, if the Autoset check box
is checked for the source signal, the software will automatically adjust the off-
set so as to obtain the optimum gain from the result of Pre-Scan.
input voltage at the initial position becomes zero
mes 0 V. Usually, check the Autoset
+10 V
0
Auto set
− 10 V
maximum.
The image becomes too dark
５ MEASUREMENT OPERATION
gnal, the offset voltage is
Display area
Offset
Display area
5-225