Laserscale BS75A-R, Manual

Page: 32 / 56

30
5-4-2. Azimuth Adjustment
A stable output signal higher than the specifications
(amplitude : 1.6 Vp-p) can be gained by adjusting the slider
direction.
Fig. 1
1
Loosen the slider mounting screw.
2
Tighten the screw at side A of Fig. 1. Then, rotate the slider
about this screw as shown in the figure until the amplitude
of the Lissajous' figure becomes maximum.
3
Alternately tighten 2 slider mounting screws little by little at
the slider position with the maximum amplitude of the
Lissajous’ figure. (Fastening torque : 2.8 N
·
m=28 kgf
·
cm)
4
Check that there is no interference between the scale and
slider, and that the clearance at B shown in Fig. 1 is
1
±
0.3 mm.
A
A
B
5
Move the scale, and make sure that the amplitudes A and
B of the Lissajous’ figure (see the figure below) are 1.6 Vp-
p or greater over whole length.
Note
If output of 1.6 Vp-p cannot be obtained even through
repeated adjustment, recheck the mounting surface
accuracy of the scale and the slider (refer to page 23 to 25),
and check again that there is no dirt on the scale’s surface.
1
±
0.3
Check for interference.
Scale
Slider
Azimuth direction
Azimuth direction
B
A