User Manual

Tough, Affordable Spectra Precision Laser Machine Display Receivers
Versatile, 360-Degree Reception
Works with all types of rotating
lasers and on all types of
machinery for fast, no-hassle
setup.
Multiple Accuracy Choices

jobsite requirements, from rough
grading to final finishing.
Adjustable, Ultra-bright LED with
Green On-Grade Display
Provides user selectable, easy-
to-see display to match ambient
lighting conditions.
Long Battery Life
Keeps your machine working.
Out-of-Laser Beam Indication
Selectable on /off indicator
directs which way to move and
get back in the beam.
Automatic Shut-off
Conserves battery life when the
receiver is not in use.
Low Battery Warning
Provides advance notice when
battery replacement is required to
keep workflow moving.
Two-Year Warranty
Reliability you can count on.
Power Options
Choose alkaline batteries, nickel
metal hydride rechargeable
batteries, or a power cord that
connects directly to the machine
power.
Rugged & Waterproof
Durable polycarbonate and
aluminum die cast housings
withstand all weather and
construction site conditions.
Internal isolating shock mounts
protect the electronics.
Spectra Precision Laser Machine Display Receiver Features and Benefits
CR600 for
General
Construction,
Grading and
Excavating
Can be handheld,
rod or machine
mounted
 

 

(1,500 ft) radius
 
by machine operator in brightly lit conditions
 
clamp included for increased versatility
 
on-grade beam
LR20 for Grade and
Depth Control
Ideal for use on
     
and compact machines
 
reception provides large
working area and range
 
for fast, accurate grade

 
“on-grade” LEDs provides superior
depth/elevation indication
 

 
in compact carrying case for easy storage and
transport
 

applications
LR30 for General
Grading
Used on dozers,

and levelers
 Use on grading and

including: dozers,
graders, scrapers,
skid steers and levelers
 
information plus directional
and out-of-beam indicator
 
tolerances from rough grading to final finishing
 
from all directions
RD10 Remote Display
Mounts in the cab, connects
to the laser receiver, and
displays grade information
to the operator. Helps keep
focus on the work and not
on the receiver for higher
productivity.
Specifications CR600 LR20 LR30 LR50 LR60
Number of Display Channels
15-Channel LCD
5-Channel LED Display
5-Channel Display 5-Channel Display
5-Channel Display
6-Channel Display in
excavating mode
9-Channel Display
Accuracy: Center on grade mode
(grading)
Multiple settings -
Ultra-fine: 0.1mm (0.004 in)
to Machine mounted: 25
mm (1 in)
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)
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)
NA
Fine: 12 mm (0.50 in)
Standard: 25 mm (1.0 in)
Wide: 50 mm (2.0 in)
NA
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 NA NA NA
Fine: 12 mm (0.50 in)
Standard: 25 mm (1.0 in)
Blade-Tilt Accuracy NA NA NA ± 0.5°, ± 1.5°, ± 2.5° N/A
Plumb-Swing Accuracy NA ± 0.5°, ± 1.5°, ± 2.5° NA ± 0.5°, ± 1.5°, ± 2.5°
Standard: (12 mm 0.5 in)
Angle Compensation Mode:
25 mm (1.0 in)
Vertical Reception 117 mm (4.62 in) 203 mm (8 in) 171 mm (6.75 in) 171 mm (6.75 in) 222 mm (8.75 in)
LED Battery Life
Alkaline Bright/Dim
Ni-MH Bright/Dim
100hrs
35hrs
50 hrs/75 hrs
40 hrs/50 hrs
45 hrs/60 hrs
30 hrs/45 hrs
45 hrs/75 hrs
40 hrs/50 hrs
Receiver Warranty
2 Years 2 Years 2 Years 2 Years 2 Years
MM-1 Magnetic Mount
Works with all LR receivers
and quickly attaches to the

backhoes. Strong dual
magnet packs will not slip
on the machine and are
adjustable for quick installation
and set-up. Release lever aids
in detaching from machine.
Accessories
LR60 for High Speed
Excavating
Features Angle Compensation

accurate elevation readings
without stopping
 

calculates and corrects the
grade display for the angle of
the dipper arm
 

degrees
 
accurate grade checking
 

 
information above and below on-grade. Use on

LR50 for
Excavating
and Grading
Features built-in blade

boom plumb indicator
 Built-in blade tilt
indicator helps the
operator keep the blade
level for increased
accuracy and productivity
 
an equal amount of grade
information above and below on-grade.
Use on dozers, graders, scrapers and

 

applications
 
above grade using the entire receiver
