User's Manual
5
• Use of this product by people other than those trained on this product may result in exposure to hazardous
laser light.
• Do not remove warning labels from the unit.
• The GL422 is Class 3A/3R (< 5mW, 600 ... 680 nm). The GL412 laser is subject to Class 2
(< 3.4 mW, 600 ... 680 nm).
• Never look into the laser beam or direct it to the eyes of other people.
• Always operate the unit in a way that prevents the beam from getting into people‘s eyes.
If initial service is required, which results in the removal of the outer protective cover, removal must only be
performed by factory-trained personnel.
Caution: Use of other than the described user and calibration tools or other procedures may result
in exposure to hazardous laser light.
Caution: Unsafe operation may result if the product is used differently than described in this
operator‘s manual.
TABLE OF CONTENTS
FOR YOUR SAFETY 5
COMPONENTS 6
How to Use the Laser System 6
Powering the Laser 6
Laser Setup 7
Turning On/Off the Laser 7
Turning On/Off the Radio Remote Control 8
Matching the Remote Control with the Transmitter 8
Activating/Deactivating Standby Mode 8
Using the Manual Mode 8
Mask Mode 9
Y(⬔)- or X(y)-Axis Slope Mode 9
APPLICATIONS 10
General Construction 10
Determining the Height of Instrument (HI) 10
Using the Slope Mode 10
Establishing Vertical Alignment 11
CALIBRATION 11
Checking Calibration of the Y- and X-Axes 11
Checking Calibration of the Z-(vertical) Axis 11
PROTECTING THE UNIT 11
CLEANING AND MAINTENANCE 12
PROTECTING THE ENVIRONMENT 12
WARRANTY 12
TECHNICAL DATA 12
Introduction
Thank you for choosing one of the Spectra Precision Lasers from the Trimble family of precision grade
lasers.
The grade laser is an easy-to-use tool that offers accurate horizontal, vertical and sloped laser reference up
to 1300 ft (400 m) away using a receiver.
FOR YOUR SAFETY
For hazardless and safe operation, read all the user guide instructions.
GB
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