CHC
CTS-112R4 user manual
98
Optical adjustment:
1)
Use the tangent screw to adjust the horizontal angle reading.
2)
Take off the cover of the reticle between the eyepiece and focusing screw. Adjust the two adjusting
screws by loosening one and tightening the other. Move the reticle to sight object A exactly.
3)
Repeat inspection and adjustment until
｜
2C
｜
< 20
”
.
4)
Replace the cover of reticle.
Check the coaxially of sighting axis and emitting photoelectric axis as well as receiving axis
after adjusting.
15.5.
Vertical index difference compensation
Inspection
1)
Mount and level the instrument and make the telescope parallel with the line connecting the center
of the instrument to any one of the screws. Lock the horizontal clamp screw.
2)
After turning on the power, zero the vertical index. Lock the vertical clamp screw and the
instrument should display the vertical angle value.
3)
Rotate the vertical clamp screw slowly in either direction about 10 mm in circumference, and the
error message
“
b
”
will appear. The vertical axis has increased to more than 3
’
at this time and
exceeds the designated compensation range. Rotate the above screw to its original position, and
the instrument display screen will show the vertical angle again, meaning that the vertical index
difference compensation function is working.
Adjustment
If the compensation function is not working, send the instrument back to the factory for repair.
15.6.
Adjustments of vertical index difference (I angle) and vertical angle 0 datum
Inspect the item after finishing the inspection and adjustment of them 15.3 and 15.5.
Inspection
1)
Power on after leveling the instrument. Sight object A in left position and read the vertical angle
value L.
2)
Rotate the telescope. Sight object B in right position and read the vertical angle value R.
3)
If the vertical angle is 0
°
in zenith, i = (L+R-360
°
)/2
If the vertical angle is 0
°
in horizon. i = (L+R-180
°
)/2 or i = (L+R-540
°
)/2.
4)
If
｜
i
｜
≥10”
, the vertical angle 0 datum shall be set again.
