Spectra Precision LR20 Laser Machine Display Receiver - Manual (Page 3)

LR50 for Excavating
and Grading
Features built-in
blade tilt and excavator
boom plumb indicator
■ ■
Built-in blade tilt
indicator helps
the operator
keep the blade
level for increased
accuracy and
productivity
■ ■
Center On-grade
provides an equal
amount of grade information above and
below on-grade. Use on dozers, graders,
scrapers and box blades
■ ■
Built-in plumb indicator for fast, accurate
grade checking in excavation applications
■ ■
Offset on-grade gives you more range
above grade using the entire receiver for
more productive excavation
■ ■
LR50W links wirelessly to the RD20
in-cab display
MM-1 Magnetic Mount
The MM-1 quickly attaches to the dipper
arms of excavators or backhoes. Strong
dual magnet packs will not slip on the
machine and are adjustable for quick
installation and set-up.
DM-20 Dozer Mast
The DM-20 is an easy-to-install rigid
mast for grading machines. No welding
is required and no drilling/tapping is
required for Trimble Ready ™ machines.
LR60 for High Speed Excavating
Features Angle Compensation for
Excavating (ACE) for accurate elevation
readings without being plumb
■ ■
Patented Angle Compensation for
Excavators automatically calculates
and corrects the grade display for
the angle of the dipper arm
■ ■
Check grade with the dipper
arm extended or retracted up
to 30 degrees
■ ■
Built-in plumb indicator for fast,
accurate grade checking
■ ■
Large vertical reception height for
use with bigger excavators
■ ■
Center On-grade provides an equal
amount of grade information above
and below on-grade. Use on dozers,
graders, scrapers and box blades
■ ■
LR60W links wirelessly to RD20
in-cab display
Tough, Affordable Spectra Precision Laser Machine Display Receivers
Specifications LR50 / LR50W LR60 / LR60W
Number of Display Channels
5-Channel Display
6-Channel Display in
excavating mode
9-Channel Display
Accuracy: Center on grade mode
(grading)
Fine: 5 mm (0.20 in)
Standard: 10 mm (0.40 in)
Wide: 20 mm (0.80 in)
Setup: 5 mm (0.20 in)
Fine: 10 mm (0.40 in)
Standard: 20 mm (0.80 in)
Wide: 40 mm (1.6 in)
Accuracy: offset on grade mode
(excavating)
Fine: 12 mm (0.50 in)
Standard: 25 mm (1.0 in)
Wide: 50 mm (2.0 in)
Setup: 6 mm (0.25 in)
Fine: 12 mm (0.50 in)
Standard: 25 mm (1.0 in)
Wide: 50 mm (2.0 in)
ACE—Angle Compensation Mode NA
Fine: 12 mm (0.50 in)
Standard: 25 mm (1.0 in)
Blade-Tilt Accuracy ± 0.5°, ± 1.5°, ± 2.5° N/A
Plumb-Swing Accuracy ± 0.5°, ± 1.5°, ± 2.5°
Standard: (12 mm 0.5 in)
ACE Mode: 25 mm (1.0 in)
Vertical Reception 171 mm (6.75 in) 222 mm (8.75 in)
LED Battery Life
Alkaline Bright/Dim
Wireless with remote on
Ni-MH Bright/Dim
Wireless with remote on
45 / 60 hrs
20 / 30 hrs
30 / 45 hrs
15 / 20 hrs 45 / 75 hrs
35 / 25 hrs
40 / 50 hrs
25 / 20 hrs
Receiver Warranty 2 Years 2 Years
Specifications LR20 LR30 / LR30W
Number of Display Channels 5-Channel Display 5-Channel Display
Accuracy: Center on grade mode
(grading)
Fine: 5 mm (0.20 in)
Standard: 10 mm (0.40 in)
Wide: 20 mm (0.80 in)
Fine: 5 mm (0.20 in)
Standard: 12 mm (0.45 in)
Wide: 32 mm (1.25 in)
Accuracy: offset on grade mode
(excavating)
Fine: 12 mm (0.50 in)
Standard: 25 mm (1.0 in)
Wide: 50 mm (2.0 in)
NA
ACE—Angle Compensation Mode NA NA
Blade-Tilt Accuracy NA NA
Plumb-Swing Accuracy ± 0.5°, ± 1.5°, ± 2.5° NA
Vertical Reception 203 mm (8 in) 171 mm (6.75 in)
LED Battery Life
Alkaline Bright/Dim
Wireless with remote on
Ni-MH Bright/Dim
Wireless with remote on
35hrs
50 / 75 hrs
30 / 40 hrs
40 / 50 hrs
20 / 30 hrs
Receiver Warranty 2 Years 2 Years
Accessories