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STONEX R20 User Manual

STONEX R20
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Stonex R20 – User Manual 13
The CA is coaxial with the EDM laser axis and perpendicular to the TA.
The TA is perpendicular to the SA.
The CA, SA and TA intersect at the instrument center.
The actual non-ideal condition, the instrument and set up will also have various errors.
By carefully setting up the instrument, double-sided observation, automatic compensation and correction, the
impact of errors on measurement can be partially eliminated (refer to Tilt Compensation, Symbols
The symbols and formats used in this Manual have the following meanings:
Symbols &
Formats
ENT
DST
VA
Surveying
3.3. Keypad
Keypad Zones:
Numeric keys (number/letter/symbol keys)
Fixed functions keys (“0/1/4/7” multifunctional keys)
Navigation keys (arrow keys)
ESC key (escape key)
ENT key (enter key
Power key
Quick functions key (“” key

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STONEX R20 Specifications

General IconGeneral
TypeTotal Station
Angle accuracy2"
Operating time8 hours
Operating temperature-20°C to +50°C
Battery TypeLi-Ion
Battery Life8 hours
Distance measurement with prism5000 m
Distance measurement reflectorless600 m
Measurement Range5000 m with prism, 600 m reflectorless
AccuracyPrism: ±(2 mm + 2 ppm) m.s.e.; Reflectorless: ±(3 mm + 2 ppm) m.s.e.
Laser ClassClass 1
Laser Wavelength635 nm
Weight5.2kg (with battery)

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