Mirror Angle Adjustment - JEOL JSPM-5200 Instructions Manual

8 GENERAL
8.3.2

Mirror Angle Adjustment

Cantilevers vary slightly in inclination, depending upon their production lot. If the
detector photodiode cannot be aligned correctly, adjust the mirror angle according to the
following procedure:
1.
Install the cantilever in the usual manner and illuminate the tip of the
cantilever with the laser beam.
2.
Adjust the photodiode position-adjusting knobs so that the photodiode is
positioned at the center point.
The total number of revolutions of the X-axis adjusting knob is 20 and that of the
Y-axis knob is 52. Therefore, the center position is at 10 (X-axis) and 26 (Y-axis)
revolutions back from the fully rotated positions.
3.
Loosen the mirror-locking screw; then adjust the mirror angle so that the
SUM value on the AFM amplifier becomes the largest value and the AFM
value becomes nearly 0.
4.
Tighten the mirror-locking screw to lock the mirror angle.
8-4
X-axis adjusting
knob
Y-axis adjusting
knob
Mirror-locking
screw
Mirror rotation
knob
TMPM5200-2