Explanation; Manually Indexing The Vertical Circle By Face Left, Face Right Measurement - Sokkia SRX1 Operator's Manual

30.EXPLANATION

30.1 Manually Indexing the Vertical Circle by Face Left, Face
Right Measurement
The 0 index of the vertical circle of your SRX is almost 100% accurate, but when it is necessary to
perform particularly high precision angle measurements, you can eliminate any inaccuracy of the 0
index as follows.

• If the power is cut off, the vertical circle indexing is ineffective. Do it again every time the power is
turned on.
• When indexing the vertical circle, sight the target manually.
PROCEDURE
1. Select "Obs.condition" in <Configuration>. Set "V
manual" (vertical circle indexing method) to "Yes".

"21.1 Observation Conditions"
<V manual 0 set> is displayed.
2. Carefully level the instrument.
3. Accurately sight a clear target with a distance of
about 30m in the horizontal direction with the
telescope in face left.
Press [OK]. The SRX rotates 180°.
4. Accurately sight the same target and press [OK]
to rotate the SRX 180°. The vertical angle is
displayed.
This concludes the vertical circle indexing
procedure.
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