Stonex R2 PLUS Total Station - User Manual 123
3. Select “1. Tilt correct”.
4. Wait a few seconds for this display to stabilize, then read
the automatically compensated angles X1 and Y1.
5. Rotate the instrument 180°/200gon. Loosen the
horizontal clamp and turn the instrument 180°/200gon
while referring to the displayed horizontal angle, then re-
tighten the clamp. Wait a few seconds for the display to
stabilize, then read the automatically compensated angles
X2 and Y2.
Calculate the following offset values (tilt zero point error):
Xoffset= (X1+X2)/2
Yoffset= (Y1+Y2)/2
When the offset value falls within the range ±20″, adjustment is not necessary. If one of the offset
values (Xoffset, Yoffset) exceeds ±20″, adjust the value as follows.
Ⅱ. Adjustment
6. Press F3: [OK] to set the horizontal angle to 0°, “Take F2”
is displayed.
7. Rotate the top of instrument 180°/200gon. Wait a few
seconds for the display to stabilize, then press F3: [OK].
8. If both correction constant are in the range, press F3:
[YES] to renew the correction angle, or press F4: [NO] to
give up this adjustment,
26.10 Vertical Index Error
The deviation between vertical circle zero position and horizontal direction is vertical index (i), it
is necessary to concern this error when measure vertical angle. The instrument program applied
a formula to correct this error.
Warning: Before starting this operation, be sure to read this manual carefully, otherwise it may
cause data faulty.
Because of the close relationship between vertical index and compensator zero position, it is
necessary to check and adjust compensator zero position before adjusting vertical circle, the
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