Leupold GX-1i3, GX-2i3 Operating Instructions Manual

GX®-1i3 AND GX-2i

3

RANGEFINDERS

OPERATING INSTRUCTIONS

Introduction .................................................Page 1

About Leupold ...............................................Page 3

Accuracy ...................................................Page 5

How GX Rangefinders Work......................................Page 6

GX Rangefinder Specifications ...................................Page 9

Operation ..................................................Page 10

Using Prism Lock ...........................................Page 28

Trouble Shooting ............................................Page 29

Cleaning/Maintenance.........................................Page 30

Warranty/Repair .............................................Page 31

TABLE OF CONTENTS

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Congratulations! You have purchased a Leupold® GX® Series digital laser

rangefinder that has been crafted by Leupold’s engineers and designers to

be the best rangefinder on the market, and to provide you with years of solid perfor-

mance on the course. Following are instructions detailing the proper use and employ-

ment of your GX Series rangefinder. To ensure top performance for the life of the prod-

uct, please read these instructions before operating your GX-1i3 or GX-2i3 rangefinder.

Your new Leupold GX Series digital laser rangefinder is a revolutionary, range-finding

device that incorporates advanced digital electronics with state-of-the-art trajectory

algorithms. The next generation Digitally eNhanced Accuracy (DNA®) engine

incorporates additional signal processing techniques to generate better ranging

distance with more accurate rangefinding. GX-2i3 features include an inclinometer

and PinHunter 3 Laser Technology. Another truly innovative and unique feature is True

Golf RangeTM (TGR®), which is available on the GX-2i3 TGR model. TGR is a marriage

of laser ranging, an inclinometer, and advanced trajectory calculations. The result is

INTRODUCTION

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distance measurements based on your own hitting ability to get you as close to

the pin as possible. Don’t rely on the “average” from other units when you can

customize your GX-2i3.

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ABOUT LEUPOLD & STEVENS, INC.

It’s a decidedly American story: in 1907, a young German immigrant named Fred

Leupold set up a one-man shop at 5th and Oak Streets in Portland, Oregon, repairing

optics for surveying equipment. The small company survived the First World War and

the Great Depression, however, it was the Second World War that would forever change

the company. Working with the U.S. Army on a riflescope and the Navy on optics for

use aboard ships, the engineers at Leupold learned the secrets of waterproofing and

durable construction that would completely change the world of sports optics.

Leupold & Stevens, Inc. is still family-owned, though the focus has turned from land

surveying to helping people across the globe survey their environments with innovative,

high-performance optics and accessories. Leupold optics are renowned for their

unchallenged ruggedness, absolute waterproof integrity, and their vastly superior optical

quality. More than a century of observation and optical experience has gone into every

product we produce, and we think the results are well worth the extra effort required to

achieve this level of quality.

In true American style, the philosophical foundation laid in our early years has served

us well as we’ve grown and changed over the decades. In fact, the firm’s founder

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established the clarity of purpose that we see at Leupold & Stevens today:

“We solemnly promise never to let down on quality, the customer is entitled to a

square deal.”

Markus Friederich “Fred” Leupold

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The ranging accuracy of the GX-1i3 and GX-2i3 rangefinders is +/- .5 yard/meter.

The maximum effective range depends upon a number of factors including lighting

conditions and air quality, but the most important factor is the reflectivity of the target.

For most objects, the maximum distance is 800 yards, while for highly reflective targets,

distances of 1100 yards can be obtained.

ACCURACY

MAXIMUM RANGE

CONDITION

GX-1i

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GX-2i

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Reflective Target (yd/m)

1100/1006 1100/1006

Trees (yd/m) 800/732 800/732

Pin (yd/m) 400/366 400/366

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The Leupold GX series of rangefinders emit a series of invisible, infrared energy pulses that

are reflected off the selected target back to the optical unit. State-of-the-art circuitry and

precision computing circuits are used to calculate the distance instantaneously by measur-

ing the time it takes for each pulse to travel from the GX rangefinder to the object and back.

Surface texture, color, size, and shape of the target all affect reflectivity, which in turn

affects the maximum range of the instrument. As a rule of thumb, brightly colored targets

are much more reflective than darker targets, with black being the least reflective color.

A shiny surface is more reflective than a dull surface. Smaller targets are more difficult

to range than larger targets. Light conditions, haze, fog, rain, and other environmental

conditions can all affect ranging performance. Any factor which degrades air clarity will

reduce the maximum effective range. Bright light shining directly on the lenses reduces the

effectiveness, producing shorter maximum ranges than those possible on darker (overcast)

days. The steadier the GX unit is held, the greater the maximum distance.

HOW IT WORKS

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The Leupold GX-1i3 and GX-2i3 6x23mm rangefinders employ an eye safe laser in their

operation. Even so, there are a few precautions that are important to remember:

• Do not depress the POWER button while aiming at a human eye or while looking into
the optics from the objective side

• Do not leave the GX within the reach of small children

• Do not take the product apart as it has a self-protection device in the electronic control
module and may cause an electric shock

• Do not attempt to use any power source other than a CR-2 battery (or equivalent) — the
GX is designed to prohibit accessing any other external power supply

SAFETY AND OPERATION

PRECAUTIONS

CLASS 3R LASER PRODUCT INVISIBLE LASER RADIATION
AVOID DIRECT EYE EXPOSURE

This product complies with IEC
60825-1: 2014-05 Ed. 3.0 and complies with FDA performance standards
for laser products except for deviations pursuant to Laser Notice
No. 50, dated June 24, 2007.
P

o

:<5.14mW. λ:895-915nm. tW:10-20ns.

LEUPOLD & STEVENS, Inc,
14400 NW Greenbrier Parkway, Beaverton, OR 97006

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SAFETY AND OPERATION PRECAUTIONS (CONT.)

• Caution: Use of controls or adjustments or performance of procedures other than those

specified herein may result in hazardous laser radiation exposure

• When you see the display through the eyepiece, please be aware that the product is
active and emitting an invisible laser and the laser aperture should not be pointed
toward anyone. The unit will produce an audible “click” when the power button is
activated to notify the user that the rangefinder is emitting an invisible laser

• Read this instruction manual in its entirety before using this rangefinder. If the product
is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired

(Display as seen through the eyepiece)

GX-2i3 Activated GX-1i3 Activated