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22. CHANGING THE SETTINGS
Items set and options (*: Factory setting)
Distance mode : Sdist (slope distance)*/Hdist (horizontal distance)/
V.dist (height difference)
Hdist : Ground*/Grid
Tilt crn (tilt correction) : Yes (H,V)*/No, Yes (V)
Tilt error : No action*/Go to <Tilt> (electric circular level is
displayed)
Coll.crn. (collimation correction) :No/Yes*
C&R crn. : No/Yes(K=0.142)/Yes(K=0.20)*
V manual : No*/Yes
V.obs (vertical angle display method) : Zenith*/Horiz./Horiz ±90
Coordinates : N-E-Z*/E-N-Z
Sea level crn. (Sea level correction) : Yes/No*
Ang.reso. (Angle resolution) : DS-201i/202i: 0.5"/1"*
DS-203i/205i: 1"*/5"
Dist.reso. (Distance resolution) : 0.1mm/1mm*
ppm setting : Press/Temp.*/+Humidity
Setting "V manual" to "Yes": "29.2 Manually Indexing the Vertical Circle by Face Left, Face Right
Measurement"
Hdist
The instrument calculates horizontal distance using slope distance values. Horizontal distance
display can be selected from the following methods.
Ground: Distance without sea level correction
Grid: Distance on the rectangular coordinates system calculated by sea level correction
(When "Sea level crn." is set to "No", Distance on the rectangular coordinates
system without correction)
Automatic tilt angle compensation mechanism
The vertical and horizontal angles are automatically compensated for small tilt errors using the
2-axis tilt sensor.
• Read the automatically compensated angles when the display has stabilized.
• The horizontal angle error (vertical axis error) fluctuates according to the vertical axis, so when
the instrument is not completely leveled, changing the vertical angle by rotating the telescope
will cause the displayed horizontal angle value to change.
• Compensated horizontal angle = Measured horizontal angle + Tilt in angle/tan (Vertical angle)
• When the telescope is directed close to the zenith or nadir angle, tilt compensation is not
applied to the horizontal angle.
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