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40.SPECIFICATIONS
Except where stated, the following specifications apply to all models of GM Series.
Telescope
Length 171 mm
Aperture 45 mm (EDM:48 mm)
Magnification 30X
Image Erect
Resolving power 2.5"
Field of view 1°30'
Minimum focus 1.3 m
Focussing screw 1 speed
Reticle illumination 5 brightness levels
Angle measurement
Horizontal and Vertical circles type Rotary absolute encoder
Detecting 2 sides
Angle units Degree/Gon/Mil (selectable)
Minimum display
GM-101: 1" (0.0002 gon/0.005 mil)/0.5" (0.0001 gon/0.002 mil) (selectable)
GM-102/103/105: 1" (0.0002 gon/0.005 mil)/5" (0.0010 gon/0.02 mil) (selectable)
Accuracy
GM-101: 1" (0.0003 gon/0.005 mil)
GM-102: 2" (0.0006 gon/0.010 mil)
GM-103: 3" (0.0010 gon/0.015 mil)
GM-105: 5" (0.0015 gon/0.025 mil)
(ISO 17123-3 : 2001)
Measuring time 0.5 sec or less
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
Minimum display 1"
Range of compensation ±6' (±0.1111 gon)
Automatic compensator ON (V & H/V)/OFF (selectable)
Compensation constant Can be changed
Distance Measurement
Measuring method Coaxial phase shift measuring system
Signal source Red laser diode (690 nm) Class 3R
(IEC60825-1 Ed.3.0: 2014/ FDA CDRH 21CFR Part 1040.10 and
1040.11 (Complies with FDA performance standards for laser products
except for deviations pursuant to Laser Notice No.50, dated June 24,
2007.))
(When the prism or reflective sheet is selected in Config mode as target,
the output is equivalent to Class 1).
Measuring range (Using the following reflective prism/reflective sheet target during
normal atmospheric conditions
*1
/ *2
is good atmospheric conditions.)
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