User Manual

Total Station Manual
203
3.4 The verticality of collimation axis and horizontal axis(2C)
 Checkout

Set a target A in about 100m away, and make sure the vertical angle of the target
is within ± 3 °. Precisely level the instrument and switch on it.
2. Make the telescope focused on target A in face left, and read the horizontal angle.
For example: horizontal Angle L = 10°13 '10".
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Loosen the vertical and horizontal brake handwheel, turn the telescope, rotate the
alidade to face right and focus on the same target A. Before aiming please tighten
the horizontal and vertical brakehandwheel and read the horizontal angle.
For example: level Angle R = 190°13 '40".
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2 C = L-(R ±180 °) = -30 "≥±20, need to calibrate.
 Calibration
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Use the horizontal micrometer handwheel to adjust the horizontal angle to the
right reading which has eliminated the C.
R + C = 190°13 '40 "-15 "= 190°13' 25"

Take down the reticle bed cover between the telescope eyepieces and focusing
handwheel, adjust the calibration screw of the crosshair on the left and right. First,
loosen the screw on one side, and screw up the screw on the other side, move the
reticle and focus on target A.
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Repeat the test Steps, calibrate it to | 2 C | < 10.
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Tighten the calibration screws, put the protective cover back.
Notice: Check the photoelectric coaxiality after calibrating.
3.5 Vertical plate index zero automatic compensation
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