166
⑷At positive position (Face left) sight at target,
press OK.
Face left,
sight at target
+
OK
V0 adjustment
<Step-1> Front
ZA 0°21′49″
HAR 185°47′42″
OK
⑸Rotate telescope. At the reverse position (face
right) sight at the same target precisely, press OK.
Face right
and sight at
target
+
OK
V0 Adjustment
<Step- 2> Reverse
ZA 179°38′30″
HAR 5°50′15″
OK
After adjustment, it shows “set” on the screen, ⑹
the display returns to Instrument constant menu
screen.
1. V0/Axis const.
2. V0/ Adjustment
3. Collimation
4. horizontal axis
5. Instr. Const.
6. Contrast ADJ.
４ Repeat the inspection steps to measure the Index Difference (ｉangle). If the Index
Difference can not meet the requirement, you should check whether the three steps of the Adjustment are
right, the sight is right and etc. Then set again according to the requirement.
５ If Index Difference can not still meet the requirement after the repeated operation, the instrument
should be returned to factory for inspection and repair.
NOTE: The vertical angles shown in the Vertical Angle 0 Datum are only for reference.
22.7 The adjustment of horizontal axis error correction
As the horizontal axis error only affects the angle of sight line, it can be only confirmed through observing
the target of which height is obviously lower or higher than the instrument.
To avoid the influence of collimation axis error, user must have an associated adjustment before adjusting
collimation axis.
It is unnecessary to collimate the prism or the target plane to decide the horizontal axis error. Therefore user
is enabled to launch this adjustment at any time. Select a recognizable point which is rather far away from
the instrument, and much higher or lower than the instrument, with an aim to precisely collimate the point
twice.
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