(E)
11
BS77
3-4-2. Azimuth Adjustment
A stable output signal of the specified value (amplitude: 1.6 V p-p) or higher can be obtained by adjusting
the slider azimuth direction.
1
Loosen the slider mounting screw.
2
Rotate the slider about the stopper as shown in the figure, until you find the point where the amplitude
of the Lissajous’ figure is at a maximum.
3
Alternately tighten the two slider mounting screws little by little at the slider position with the maxi-
mum amplitude of the Lissajous’ figure. (Fastening torque: 0.8 N
.
m = 8 kgf
.
cm)
4
Move the scale, and make sure that the amplitudes A and B of the Lissajous’ figure (see the figure
below) are 1.6 V p-p or greater over the entire length.
n
If output of 1.6 V p-p cannot be obtained even through repeated adjustment, recheck the mounting surface accuracy
of the scale and the slider (refer to pages 4 to 5), and check again that there is no dirt on the scale’s surface.
Azimuth direction
Azimuth direction
B
A
