Telescope
Image Erect
Magnification ３０×
Effective aperture 48mm
Resolving power 3.75″
Minimum focus １ｍ
Stadia ratio １００
Sight distance precision ≤0.4％D
Tube length 172mm
Angle Measurement
Measuring method Absolute Coding
Diameter of circle (vertical, horizontal) 79ｍｍ
Minimum reading 1″、5″、10″Selectable
Measuring unit 360°／400gon／6400mil Selectable
Vertical angle０° Zenith０°／Horizontal０°Selectable
Accuracy 2″
Distance Measurement
Single prism(under fair weather condition)
GDM-622R4 ： 2.5km
Triple prism(under fair weather condition)
GDM-622R4： 5km
Codak gray card (under fair weather condition) white flour 90% reflectivity
GDM-622R4： 400m
Display Max：999999.999ｍMin：１ｍｍ
Unit
ｍ／ｆｔ Selectable
Accuracy prism:±(3ｍｍ＋2ｐｐｍ•D);
no prism:±(5ｍｍ＋3ｐｐｍ•D)
Measuring time Fine single shot: 3S
Tracking: 0.8 S
Meteorological Correction Manual input, Auto correction
Reflection prism correction Manual input, Auto correction
Vial
Plate vial 20″/2mm
Circular vial 8′/2mm
Vertical Compensator
System Single axis, double axis liquid electronic sensor compensationCompensation range ±3′
Resolving power １″
Optical Plummet
Image Erect
Magnification 3×
Focusing range 0.3m～∞
Field of view ５°
Display
Type LCD，Four lines，digital
Data Communication
Port RS－232C,SD Card,Bluetooth Selectable
On-board Battery
Power resource Rechargeable Ni-H battery
Voltage DC7.2Ｖ
Continuous operation time BDC 3000mAh
Angle measurement: 20 hours
Distance measurement: 8 hours
Operation Environment
Operating temperature －20°～＋45℃
Size & weight
Dimension 180mm×175mm×355mm
Weight 6.5ｋｇ
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