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28.SPECIFICATIONS
Except where stated, the following specifications apply to all DSs.
Telescope
Length 168mm
Aperture 45mm (1.8 inch) (EDM: 50mm (2.0 inch))
Magnification 30X
Image Erect
Resolving power 2.5"
Field of view 1°30' (26m/1,000m)
Minimum focus 1.3m (4.3ft)
Focussing screw 1 speed
Reticle illumination 5 brightness levels
Angle measurement
Horizontal and Vertical circles type
Rotary absolute encoder
Detecting
DS-201i/202i/203i: 2 sides
DS-205i: 1 side
Angle units Degree/Gon/Mil (selectable)
Minimum display
DS-201i/202i :0.5"(0.0001gon/0.002mil)/1" (0.0002gon/0.005mil) (selectable)
DS-203i/205i :1" (0.0002gon/0.005mil)/5" (0.0010gon/0.020mil) (selectable)
Accuracy
DS-201i: 1" (0.0003gon/0.005mil)
DS-202i: 2" (0.0006gon/0.010mil)
DS-203i: 3" (0.001gon/0.015mil)
DS-205i: 5" (0.0015gon/0.025mil)
(ISO 17123-3 : 2001)
Collimation compensation On/Off (selectable)
Measuring mode
Horizontal angle: Right/Left (selectable)
Vertical angle: Zenith/Horizontal/Horizontal ±90°/% (selectable)
Tilt angle compensation
Type Liquid 2-axis tilt sensor
Correction unit 1"
Range of compensation ±6’
Automatic compensator ON (V & H/V)/OFF (selectable)
Tilt offset Can be changed
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