JEOL JSPM-5200 Instructions Manual page 171

５ MEASUREMENT OPERATION
The motor for approaching starts to rotate and automatically stops when the AFM
value becomes the same as the value given in Reference/V.
When approaching has completed, the indicator on
from the value during approaching (–2.0 V) to the Referenc V value (0 V). This
phenomenon is called Jump-in.
If approaching finishes as the indicator on the AFM AMP unit slowly changes to 0 V,
approaching might not have been correctly performed. In such a case, even though you
try to measure a force curve (described later), you cannot obtain the force curve data, nor
can you o
The possible reasons for this are the ele
reflected on the specimen surface. For the former, take remedial measures as explained
a bove. For the latter, readjust the photodiode position, click on the Approach Off button
in th e Tip window; then, click on the App
If approaching stops befo
Reference/V value, it is judged that the seeming state of approachi
occurred due to unexpected electric
the Approach Off button in the Tip window; then, click on the Approach On button
agai n.
You may hear an oscillation sound coming fro
completing. This is because the setting of the feedback filter is so fast that it oscillates. If
the sound continues, click on the
select a slow filter (a smaller value) from the pull-down menu.
5-108
btain the force curve image, either.
re the indicator on the AFM AMP unit indicates the
the AFM AM
ctrostatic force and interference of laser beams
roach On button in the Tip window again.
al noise or something like that. In this case,
m the instrument when approaching is
button in the Feedback Filter/Hz selection box and
P unit suddenly changes
e/
ng having completed
click on
TMPM5200-2