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Others
CPU 32-bit
EDM technology Digital signal processing, single mainboard
Build-in temp.& pressure sensor Standard
Guide light Optional
Working temperature -20°～+50℃
Dimension 220×184×360mm(W×D×H)
Weight 5.5kg
Water proof IP55(IEC60529)
OTS680 series
Telescope
Length 156mm
Image Erect
Objective aperture Ф45mm
Magnification 30×
Field of view 1°30′
Mini focus distance 1.0ｍ
Reticle illumination 10 brightness levels
Angle measurement
Reading system Absolute encoder for 680 series
Circle diameter 79mm
Angle unit degree/gon, selectable
Minimum display 0.5″/1″/5″, selectable
0.0001°/0.0005°/0.001°, selectable
0.1mgon/0.2mgon/1mgon, selectable
Detecting mode Both circles adopt diametrical detection
Accuracy 682 2″
685 5″
Distance measurement（R300/R500）
Laser wave length 650-690nm
Laser class
Reflectorless Class 3R (IEC 60825-1)
Reflective sheet Class 3R (IEC 60825-1)
Prism Class 1(IEC 60825-1)
Measurement range (Overcast, no haze, visibility about 30 km; no heat shimmer)
Reflectorless *
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