25-1
24 SPECIFICATIONS
24
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
Reticle illumination
5 brightness levels
Angle measurement
Horizontal and Vertical circles type
Rotary absolute encoder
Detecting
GM-52:
2 sides
GM-55:
1 side
Angle units
Degree/Gon/Mil (selectable)
Minimum display
GM-52/55:
1" (0.0002 gon/0.005 mil)/5" (0.0010 gon/0.02 mil)
(selectable)
Accuracy
GM-52:
2" (0.0006 gon/0.010 mil)
GM-55:
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.)
Mini pole prism Prism-5
*3
:
1.3 to 500 m (1,640 ft)
Standard prism Prism-2 X 1
*3
:
1.3 to 4,000 m (13,120 ft)
(1.3 to 4,000 m (13,120 ft))
*2
Reflective sheet RS90N-K
*4
:
1.3 to 500 m (1,640 ft)
1.3 to 300 m (980 ft)
*5
Reflective sheet RS50N-K
*4
:
1.3 to 300 m (980 ft)
1.3 to 180 m (590 ft)
*5
Reflective sheet RS10N-K
*4
:
1.3 to 100 m (320 ft)
1.3 to 60 m (190 ft)
*5
