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3-5-2. Azimuth Adjustment
The direction shown in the figure below is referred to as the azimuth direction. A stable output signal within
the range of the specified values can be obtained by adjusting the detector head direction.
<Specified values>
A/B signal output type ...... Output format F : Amplitude 0.7 Vp-p to 1.3 Vp-p
Analog output type ........... Output format H : Amplitude 0.6 Vp-p to 1.1 Vp-p
Azimuth direction
1
Loosen the detector head mounting screws, and then bring the stopper directly against the scale bottom
surface.
2
Rotate the detector head about the stopper in the azimuth direction as shown in Fig. 3-15 to find the
location where the Lissajous' figure has the maximum amplitude.
3
Alternately tighten the two detector head mounting screws little by little at the detector head position
with the maximum amplitude of the Lissajous' figure. (Fastening torque: 1.4 N · m)
4
Check that there is no interference between the scale and detector head.
Detector head
Do not move the machine device with the stopper attached to detector head because this may result in
breakage of the detector head or the scale.
BL57-RE
Output format G : Amplitude 0.8 Vp-p to 1.2 Vp-p
Azimuth direction
Fig. 3-15
Stopper
Fig. 3-16
Check for interference
Scale
Bring directly against
Stopper
(E)
3-11
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