David White 47-LD18N, 47-LD12N Instruction Manual

VOLUME

BEAM

LD-12N

Made in USA

POWER

Electronic Laser Detector

Universal Laser Detector with Rod Clamp

for use with Rotary Laser Levels

INSTRUCTION MANUAL

Cat. #47-LD12N

Made in USA

Thank you for purchasing the David White® Universal Laser Detector. Please read this
manual thoroughly before operation.

INTRODUCTION

The David White® Universal Laser Detector aids in locating and targeting visible and
invisible red or green laser beams emitted by a rotary laser. Perfect for use in outdoor
conditions where sunlight and distance may make this task more difficult.

FEATURES

Printed in USA GG0902 Z93-47-LD18NMANUAL Rev. 1

Place

stamp

here

David White
P. O. Box 359
Watseka, IL 60970-0359 USA

Cat. #47-LD18N

Model 47-LD18N shown

®

P.O Box 359, Watseka, IL 60970 USA

[phone] • [phone]

FAX [phone]

VOLUME

BEAM

LD-18N

Electronic Laser Detector

POWER

Beam
Capture
Window

Power ON/OFF

Beam Resolution

Volume ON/OFF

LCD Readout
Window

Speaker

LCD Readout
Window
(LD-18N Only)

Made in USA

Battery Door

50 mm
(

2.0 in

)

Thread for
Rod Clamp
Attachment

POWER

A 9-volt battery will provide up to 3 months of typical usage. When the unit is turned
on and the low battery symbol remains lit, the battery should be replaced. Removing
the battery door allows access to the battery for replacement.

HOW TO USE

1:
Turn on the unit by pressing the ON/OFF pad. The
LCD symbols will momentarily flash (Fig. 1) and the
"coarse" beam indicator symbol will remain lit. Audio
signal is automatically on when unit is first turned on.

2:
Position the front panel of the laser detector to­wards the direction of the rotary laser.

3:
Slowly move the laser detector in an upward and
downward direction until the LCD beam indicator arrows appear and/or a pulsing audio
signal is heard. Use the Beam Resolution feature to choose between the coarse/low
setting, used for approximating level or for initial locating of the center level point, the
medium setting, used for more accuracy, and the fine/high setting, used for accurate
pinpointing of level.

4:
Move the detector upwards when the low beam indicator light is lit; a short pulsing
audio tone will be heard. Move the detector downwards when the high beam indicator
arrow is lit; a long pulsing audio tone will be heard. When the beam is level, the level
indicator line will be lit and a solid audio tone will be heard. If the detector is not struck
by a laser beam, the detector will automatically shut itself off after 5-8 minutes to
preserve battery life. Turn the unit back on using the power button.

SPECIAL FEATURES

The LD-18N & LD-12N come with a removable rod clamp (#47-5296N & #47-5301N) that
allows for use in leveling and grading with square, round, or oval leveling rods. The LD­18N & LD-12N are water and dustproof. Use a soft, dry cloth to remove any dirt or
moisture from the instrument before storage. Do not use benzene, paint thinner, or
other solvents to clean the instrument.

The LD-18N & LD-12N have a unique memory feature which will indicate the last posi­tion of the laser beam if moved out of the plane of laser light. The unit has built-in
electronic filtering for bright sunlight and electro-magnetic interference. The audio
speaker has three selections Off, Loud and Louder (high is 125+ dBA, low is 105 dBA). It
also has three distinct tones for high
(fast), on-grade (solid tone) and low
(slow).

The LCD Display of the LD-18N is
equipped with seven distinct channels
of information (Fig. 2) indicating the
position of the LD-18N in the plane of
laser light. As you move the detector
closer to the center, the arrows fill in to
indicate the laser position.

Fig. 2

Fig. 1

High Beam

Low Beam

Beam
Resolution

Battery
Strength

Speaker
Volume

LCD Display

Level Beam
Indicator

SPECIFICATIONS

MODEL: #47-LD18N David White® Universal Laser Detector

#47-LD12N David White® Universal Laser Detector

DIMENSIONS: 6.6" h x 3" w x 1" d (169mm x 76mm x 25mm)
WEIGHT: 10 oz. (275g)
RANGE (w/ AutoLaser Rotary Laser Level): up to 2000 feet (600m)
BEAM DETECTION SENSITIVITY:

(sensitivity based on standard conditions with most lasers; may vary slightly due to

make, manufacturer, beam size, or working conditions)

#47-LD18N Fine, ± .75mm; Medium, ± 1.5mm; Coarse, ± 3mm
#47-LD12N Medium, ± 1.5mm; Coarse, ± 3mm

READOUT: LED, front and rear windows
POWER: One 9-Volt battery; provides 3 months of typical usage

WARRANTY

This David White ® Universal Laser Detector is warranted to the original purchaser to be
free from defects in workmanship and material.David White will repair or replace any
defective part which may malfunction under normal and proper use within a period of
ONE YEAR from the date of purchase, without charge of parts and labor, once delivered
and shipped prepaid to David White together with proof of date and place of purchase.
This warranty is not subject to misuse, abuse, assignment, or transfer. The exclusive
remedy under any and all warrants and guarantees, expressed or implied, is limited to
repair and/or replacement as provided herein, and David White shall not be liable for
damages from loss or delay of equipment uses, consequential or incidental damage.

NOTE: Please call David White at 1 [phone] for a return authorization number
before returning the unit for repair.

WARRANTY REGISTRATION

Model Name/Number: _______________________

Serial Number: _______________________________

Date Purchased: _____________________________

County/State/Province Purchased: ____________

Company Name: _____________________________

Contact/Title: ________________________________

Address: ____________________________________

____________________________________________

City: ________________________________________

State/Province:_________________ Zip: _________

Phone/Fax: __________________________________

Dealer Name/Location: _______________________

____________________________________________

What influenced you to purchase this
equipment?

❑ Owned other David White equipment
❑ National ad
❑ Saw at trade show ❑ Local dealer ad
❑ Recommended by someone ❑ Dealer

❑ Other: ___________________________________

___________________________________________

Comments and
Suggestions for Improvements:

___________________________________________

___________________________________________

___________________________________________

___________________________________________

___________________________________________

___________________________________________

___________________________________________

GG0902