Spectra LL500 User Manual

Features and Functions
1. Power Switch—turns the laser on/off.
2. Handle—allows you to carry the
laser easily.
3. Battery Housing—holds four D-cell
alkaline or Ni-Cd batteries.
4. Battery-Recharging Jack—is the
port that an optional battery recharger
plugs into.
5. Low-Battery LED—flashes when the
batteries need replacing or recharging.
6. Rotating Prism—spins at 600 rpm to
transmit the laser signal.
7. Bull’s-Eye Level—provides an easy
reference for leveling the laser.
8. Leveling Screws—turn clockwise/
counterclockwise so the laser can
be leveled.
09. Leveling Base—supports the laser while
it’s on the tripod. The leveling base also
allows you to use the laser freestanding.
10. Lighthouse—is a 360° exit window for
the laser beam. The lighthouse is sealed
and protects the internal components
from the environment.
11. Out-of-Level LED—flashes when the
laser is out of its self-leveling range.
12. X Axis Calibration Screw—allows the
X axis of the laser to be adjusted so that
the laser beam is level.
13. Y Axis Calibration Screw—allows the
Y axis of the laser to be adjusted so that
the laser beam is level.
14.
5
/8-11 Tripod Mount—allows the laser
to be attached to a standard
5
/8-11
construction tripod.
Model LL500
Quick Reference Card
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Spectra LL500 Specifications

General

Self-leveling range	±5°
Rotation Speed	600 rpm
Power Source	4 x D-cell alkaline batteries
Waterproof/Dustproof	IP66
Laser type	635 nm, Class 2
Outdoor Use	Yes
Warranty	5 years
Accuracy	±1/8" at 100 ft (±3 mm at 30 m)
Operating Temperature	20°F to 122°F (-7°C to 50°C)

Summary

Spectra Precision Laser LL500 Features and Functions

Power and Leveling Components

Details key operational controls including the power switch, leveling screws, and leveling base.

Indicators and Optical Features

Covers visual indicators like LEDs and the rotating prism for laser signal transmission.

Battery and Mounting Features

Describes battery housing, charging port, and tripod mounting options.

Determining the Height of Instrument (HI)

Procedure for HI Calculation

Step-by-step guide to set up the laser, use a grade rod, and calculate HI.

Example Calculation

Illustrates HI calculation using benchmark elevation and rod reading.