Introduction of Leupold Digital Golf Laser Rangefinder GX-4i2

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 performance on the course. Following are instructions detailing the proper use and employment of your GX Series rangefinder. To ensure top performance for the life of the product, please read these instructions before operating your GX-3i2 or GX-4i2.
Your new Leupold GX Series digital laser rangefinder is a revolutionary, range-finding device that incorporates advanced digital electronics with state-of-the-art ballistics algorithms. The next generation Digitally enhanced Accuracy (DNA) engine incorporates additional signal processing techniques to generate better-ranging distance with more accurate range finding. GX-4i2 features include an incredibly bright OLED display, inclinometer, and PinHunter2 Laser Technology. Another truly innovative and unique feature is True Golf Range (TGR), which is available on the GX-4i2 TGR model. TGR algorithms are a marriage of laser ranging, an inclinometer, and an advanced computerized ballistics program. The result is distance measurements accurate to less than a yard, no matter the angle at which the laser is fired.

Detailed Specifications

The GX2 Series of digital laser rangefinders provides a variety of useful modes  to tailor performance to the conditions you experience in the field. Model features are identified on the following pages.

Leupold Digital Golf Laser Rangefinder GX-4i2 Accuracy

The ranging accuracy of the GX2 series of 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 550 yards, while for highly reflective targets (such as pin prisms), distances of 700 yards can be obtained. 

Maximum Range

How it Works

The Leupold GX2 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 measuring the time it takes for each pulse to travel from the GX2 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 reduc-es the effectiveness, producing shorter maximum ranges than those possible on  darker (overcast) days. The steadier the GX2 unit is held, the greater the  maximum distance.

Operation

QUICK SET MENU

*GX-4i2 display shown with all possible characters visible

GX-3i2 & GX-4i2

• The GX-3i2 and GX-4i2 have two buttons:  POWER and MODE.  When you initially press the POWER button, the display is activated and the unit is ready for ranging.  

• Press the POWER button a second time to range, or hold the POWER button depressed to scan. Scanning automatically updates the display.  

  

• When ranging without a steady rest at long distances, you can easily differentiate the pin from other potential targets behind the pin.
• When you press and hold the MODE button for 1 second and then release it, the Quick Set Menu is activated. 
• To set or activate a mode, you must advance to that function by pressing the MODE button until that function is displayed. 
• To activate or manipulate a function, press the POWER button as necessary. If this is the last function to be set, allowing the rangefinder to sit idle for 30 seconds will cause an automatic power-off, saving all selections. 
• If additional set up is required, simply press MODE to continue through the Quick Set Menu. Pressing and holding MODE for at least 2 seconds at any time will exit the Quick Set Menu, save all previous changes, and prepare the rangefinder for immediate use. 
• To reset your GX-3i2 or GX-4i2 to factory settings, press POWER to activate the unit.  With the rangefinder activated, press and hold MODE, then immediately press and hold POWER while continuing to hold MODE depressed. 
• After the 10-second timer shown in the display reaches zero, the rangefinder will return to factory settings.

Safety and Operation Precautions

• 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 GX2 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 CR2 battery (or equivalent) — the GX2 is designed to prohibit accessing any other external power supply

WARNING

• 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
• Caution: Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous 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

  

(Display as seen through the eyepiece)

Rangefinder GX-4i2 Description

The Leupold Digital Golf Laser Rangefinder GX-4i2 is a premium golfing accessory designed to help you improve your game. It is compact and lightweight, making it easy to carry around the golf course. The GX-4i2 provides accurate distance measurements to the flagstick, trees, bunkers, and other targets. It features multiple aiming modes, including Fog Mode, which helps you get accurate readings in foggy conditions. The rangefinder also has a Scan Mode that allows you to scan the landscape and get distance measurements to multiple targets. The GX-4i2 has a long battery life, and its CR2 battery is easily replaceable.

Fog Mode

The Fog Mode can be used in foggy/rainy conditions to screen out false readings from raindrops or other atmospheric interference to provide an accurate range. Fog Mode changes the algorithm to look for the “last” target.  To increase ranging accuracy always range the ground around the pin/flag when Fog Mode is on. 

TO ACTIVATE FOG MODE

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and then release to enter the Quick Set Menu; the word “Fog” will now appear in the upper display.
3. While the word “Fog” is displayed, press and release POWER as necessary until the word “On” is displayed in the lower portion of the display.
4. To save the changes and return to ranging mode, let the unit sit idle for at least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds. To continue through the Quick Set Menu and manipulate another feature, press and release MODE until the appropriate icon is displayed.

NOTE: There is no icon for Fog Mode in normal operation.  When powered on the unit will display “Fog On” to remind you of the current setting.  We recommend turning Fog Mode off during normal ranging to enable easy location of the pin/flag.
SMART KEY TECHNOLOGY
Available only on GX-4i2 models, the yellow Smart Key provides True Golf Range (TGR) and Club Selector capability.  Replace the yellow Smart Key with the included chrome faceplate to completely disarm TGR functionality and instantly convert the GX-4i2 to a device that measures distance only. Use of the GX-4i2 for tournament play is permitted when Local Rule is in effect (see USGA Decision 14-3/0.5).  Safe storage for the Smart Key or chrome faceplate can be found inside the carrying case. 

True Golf Range

True Golf Range is an adjusted range that will compensate for uphill shots that play long and downhill shots that play short. TGR is calculated from the line of sight distance, incline or decline, current temperature and altitude, and will display the adjusted range the golfer should play to. For example, if you have a lie 150 yards from the pin, but the green falls 6 degrees above your ball, you should play the shot as if it were 164 yards.

NOTE: Turning TGR off will also disable the Club Selector and inclinometer display; all distance readings will be line-of-sight measurements.
TO ACTIVATE TGR

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and then release to enter the Quick Set Menu; press and release MODE one more time to advance to TGR mode.
3. While TGR is shown in the upper portion of the display, press and release POWER as necessary until “On” is shown in the lower portion of the display.
4. To save the changes and return to ranging mode, let the unit sit idle for at least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds. To continue through the Quick Set Menu and manipulate another feature, press and release MODE until the appropriate mode is displayed. 

Day Of Play Temperature Input

Temperature is one of the factors used to determine TGR ranges; inputting the current temperature will increase the accuracy of your TGR measurement. The default temperature setting is 75 degrees F (25 degrees C). 

NOTE: If yards is selected as the desired measurement output, the temperature will automatically be measured in Fahrenheit. If meters is selected, the temperature will be measured in Celsius. 

MANUALLY INPUT THE DAY OF PLAY TEMPERATURE

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and release to enter the Quick Set Menu.
3. Verify that TGR is turned on; if TGR is not activated, you will not be able to enter the current temperature, see “To Activate TGR:” above.
4. Press and release MODE until temperature is displayed.
5. While the temperature is flashing, press and release POWER to change the current temperature setting to match the current conditions. Each depression of POWER will increase the temperature setting by 5 degrees until 120 degrees F (50 degrees C) has been reached, at which time the setting will return to 30 degrees F (0 degrees C) and begin increasing again. 
6. To save the changes and return to ranging mode, let the unit sit idle for at least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds. To continue through the Quick Set Menu and manipulate another feature, press and release MODE until the appropriate icon is displayed. 

Day Of Play Altitude Input

Altitude is one of the factors used to determine  TGR ranges; inputting the local elevation/altitude will increase the accuracy of your TGR measurement. The default altitude setting is 1000 feet, and will be shown in the lower portion of the display. 

NOTE: Altitude is always measured in feet. 
MANUALLY INPUT THE DAY OF PLAY ALTITUDE

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and release to enter the Quick Set Menu.
3. Verify that TGR is turned on; if TGR is not activated, you will not be able to enter the current altitude, see “To Activate TGR:” above.
4. Press and release MODE until “Alt” is displayed.
5. While the “Alt” is flashing, press and release POWER to change the current altitude setting to match current conditions; each depression of POWER will increase the altitude setting by 500 feet until 9999 has been reached, at which time the setting will return to 0 and begin increasing again.
6. To save the changes and return to ranging mode, let the unit sit idle for at least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds. To continue through the Quick Set Menu and manipulate another feature, press and release MODE until the appropriate icon is displayed.

Leupold Digital Golf Laser Rangefinder GX-4i2 Club Selector

NOTE: If TGR is not activated, you will not be able to use the CLUB SELECTOR function.
When TGR is activated, the Club Selector function recommends the proper iron for the current distance, shot angle, environmental conditions, and multiple other factors. This will be shown in the lower portion of the display.  When ranging an object with True Golf Range activated, the upper display will show the TGR distance, and the lower display will show the line-of-sight distance briefly, followed by the word “club”, followed by the club recommendation. The True Golf Range will remain visible in the upper portion of the display. 

TO ACTIVATE CLUB SELECTOR

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and then release to enter the Quick Set Menu. 
3. Verify that TGR is turned on; if TGR is not activated, you will not be able to enter club selections. See “To Activate TGR” above.
4. Press and release MODE until “club” is displayed.
5. While “club” is shown in the lower portion of the display, press and release POWER as necessary until “On” is shown in the upper portion of the display.
6. To save the changes and return to ranging mode, let the unit sit idle for at least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds. To continue through the Quick Set Menu and manipulate another feature, press and release MODE until the appropriate mode is displayed.

Critical to accurate club recommendations is the known striking distance of the user with specific clubs. By inputting the actual distance obtained with a few clubs, a specialized algorithm accurately determines the distance obtained with others. The actual distance obtained from an 8-iron, 6-iron, and 4-iron shot should be input as accurately as possible. If no club distance is input, the Club Selector will automatically default to the preset distances (130 yards for an 8-iron, 150 yards for a 6-iron, and 170 yards for a 4-iron). In addition to the striking distances, the temperature and altitude at which these distances were measured must be input following the distance input process. By entering the environmental conditions in which the specific distances were obtained, the Club Selector will be able to adjust the recommended iron according to the current conditions. 
NOTE: Though we strongly recommend inputting the specific distances obtained with each of the irons mentioned above, the specialized algorithms used by the GX-4i2 will make logical assumptions about the remaining club(s) if specific distances are not known for one or more of the remaining clubs. 

Yards/Meters Mode

NOTE: “SET UP” will briefly flash before transition to YARDS/METERS.
This mode allows you to toggle between yards or meters for the measurement output unit. When set to Yards mode, all temperature settings will be in Farenheit.  When set to Meters mode, all temperature settings will be in Celsius.  
TO CHANGE FROM YARDS TO METERS

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and then release to enter the Quick Set Menu.
3. Press and release MODE until “Set Up” flashes briefly in the display, followed by the word “Unit” shown steadily in the lower display.
4. While the word “Unit” is shown in the lower display, press and release POWER as necessary to toggle between “YD” for Yards and “M”for Meters, which will be shown in the lower right portion of the display. 
5. To save the changes and return to ranging mode, let the unit sit idle for a least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds. 

NOTE: If yards is selected, the temperature will automatically be measured by Fahrenheit.  If meters is selected, the temperature will be measured in Celsius.

Club Selector Setup

NOTE: You cannot input a distance value less than or equal to the previous club. For example, if you choose 155 yards for your 8-iron, the lowest available  distance for your 6-iron will be 160 yards.

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and then release to enter the Quick Set Menu.
3. Press and release MODE until 8 Iron is displayed.
4. The 8-iron indicator will be shown in the upper display, and the last saved distance will be shown in the lower display. If you wish to input a distance other than the one shown, proceed to step 5. To save the shown distance for your 8-iron, press MODE and skip to step 6 below.

5. Press POWER to set the distance obtained with your 8-iron. Each depression of POWER will increase the distance associated with your 8-iron shot in 5-yard/meter increments beginning with the last saved distance, until 200 yards (185 meters) has been reached. Once 200 yards (185 meters) has been reached, it will reset to 60 yards (55 meters), and start over again. When the appropriate distance is displayed, press MODE. 

   

6. The 6-iron indicator will be shown in the upper display, and either the last saved distance or 8-iron distance plus 20 yards will be shown in the lower display. If you wish to input a distance other than the one shown, proceed to step 7. To save the shown distance for your 6-iron, press MODE and skip to step 8 below.

7. Press POWER to set the distance obtained with your 6-iron. Each depression of POWER will increase the distance associated with your 6-iron shot in 5-yard/meter increments, the last saved distance, until 220 yards has been reached. Once 220 yards (200 meters) has been reached, it will reset to the 8-iron distance plus 5 yards/meters, and start over again. When the appropriate  distance is displayed, press MODE.

   

8. The 4-iron indicator will be shown in the upper display, and either the last save distance or 6-iron distance plus 20 yards will be shown in the lower display.  If you wish to input a distance other than the one shown, proceed to step 9.  To save the shown distance for your 4-iron, let the unit sit idle for at least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds.  To continue through the Quick Set Menu and manipulate another feature, press and release MODE until the appropriate icon is displayed. 

9. Press POWER to set the distance obtained with your 4-iron shot in 5-yard/meter increments, until 240 yards (220 meters) has been reached. Once 240 yards (220 meters) has been reached, it will reset to the 6-iron distance plus 5 yards/meters and start over again.  When the appropriate distance is displayed, let the unit sit idle for at least 30 seconds until an automatic power down occurs, or simply press and hold MODE for at least 2 seconds. To continue through the Quick Set Menu and manipulate another mode, press and release MODE until the appropriate icon is displayed. 

   

INPUT THE TEMPERATURE AND ALTITUDE AT WHICH THE CLUB SELECTOR SETUP WAS MEASURED.
Once the striking distances have been input, press MODE and follow the steps below:

1. The last saved Temperature will be flashing in the  bottom portion of the display. If you wish to input a temperature other than the one shown, proceed to step 2. To save the shown temperature, press MODE and skip to step 3 below.
2. Press POWER to begin incrementing through the Temperature settings. The default setting is 75 degrees F (25 degrees C). Pressing POWER will increment through a range of 30 degrees to 120 degrees F (0 degrees to 50 degress C) in 5 degree increments.  When the appropriate temperture is displayed, press MODE to save your selection and move on to the Altitude input.

3. The last saved Altitude will be flashing in the bottom portion of the display. If you wish to input an Altitude other than the one shown, proceed to step 4. To save the shown altitude and return to ranging mode, let the unit sit idle for at least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds. To continue through the Quick Set Menu and manipulate another feature, press and release MODE until the  
        appropriate mode is displayed. 

   

4. Press POWER to begin incrementing through the altitude settings. The default setting is 1000 feet.  Pressing POWER will increment through a range of 0 feet to 9,999 feet in 500 foot increments.  When the appropriate altitude is displayed, you have completed the input process for setting up the Temperature and Altitude at which the striking distances were measured. To save the changes and return to ranging mode, let the unit sit idle for at least 30 seconds until an automatic power-down occurs, or simply press and hold MODE for at least 2 seconds. To continue through the Quick Set Menu and manipulate another feature, press and release MODE until the appropriate mode is displayed.

Selectable Reticles

This mode is used to choose from any one of 3 preloaded aiming reticles for your GX2 series digital laser rangefinder.  
HOW TO CHOOSE A PARTICULAR AIMING RETICLE/CROSSHAIR

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and then release to enter the Quick Set Menu.
3. Press and release MODE repeatedly until the reticle is flashing.
4. While the reticle is flashing, press and release POWER.
5. Continue pressing and releasing POWER until the desired reticle is flashing. Press MODE to save the changes.

AVAILABLE RETICLES

Prism Lock Beep

Prism Lock is always activated and will automatically detect the presence of prisms in course features when scanning at a distance of 30 yards or greater. When using Scan Mode to range a course feature with integral prisms, your GX rangefinder by default, will produce an audible beep and the Prism Lock bracket will be displayed along with the measured distance.  If True Golf Range has been activated, the TGR distance and Club selection will be shown (GX-4i2 with yellow Smart Key installed only).  
If True Golf Range has not been activated, or you are using a GX-3i2, the line of sight distance will be shown. 

TO TURN OFF THE AUDIBLE BEEP

1. Press POWER to activate the rangefinder.
2. Press and hold MODE for at least 1 second and then release to enter the Quick Set Menu.
3. Press and release MODE until “bEEP” is displayed.
4. While the word “bEEP” is displayed press and release POWER as necessary until the word “OFF” is displayed. Press MODE to save the changes.

NOTE: Prism Lock works best in Scan Mode while pressing and holding the POWER button.

Leupold Digital Golf Laser Setup Guide

To operate the Rangefinder GX-4i2, follow these steps:

1. Insert the CR2 battery into the battery compartment.
2. Turn on the rangefinder by pressing the power button.
3. Select the aiming mode by pressing the Mode button.
4. Press the Fire button to measure the distance to your target.
5. To use the Scan Mode, press and hold the Fire button while scanning the landscape.
6. To use the Prism Lock feature, press and hold the Fire button until you hear an audible confirmation.
7. To turn off the rangefinder, press and hold the power button for a few seconds.

Cleaning & Maintenance

• Blow away dust or debris on lenses, or use a soft lens brush (such as the one found on the Leupold LensPen). 
• To remove fingerprints, water spots or tougher dirt, use a soft cotton cloth or the cleaning end of the Leupold . A lens tissue with lens cleaning fluid may be used for more stubborn dirt. Always apply cleaning fluid to the cleaning cloth, never directly to the lens. 
• To insert a new battery, remove the battery cover (shown in diagram on page 11) and remove exhausted battery. Insert new CR-2 battery, negative terminal first, in to the battery compartment. Close battery cover. 
• To focus the GX rangefinder, turn the eyepiece left or right (you will feel and hear the clicking of the diopter, indicating a change to the focus has been made) until crisp focus is achieved. 
• All GX2 series rangefinders are weatherproof. 
• All GX rangefinders include a lanyard and are equipped with a lanyard  attachment for added security in the field. GX-4i2 and GX-2i models are supplied with a small instruction supplement in the inside pocket of the included case. 

Troubleshooting of Leupold Digital Golf Laser Rangefinder GX-4i2

• If the rangefinder is not turning on, check the battery and ensure it is properly inserted.
• If the rangefinder is not providing accurate readings, make sure you are aiming at the correct target.
• If the display is hard to read, adjust the brightness level by pressing the Mode button.
• If the rangefinder is not focusing, make sure the lens is clean and free of debris.
• If the rangefinder is malfunctioning, contact Leupold's customer support for assistance.

Leupold Warranty

Leupold non-Golden Ring electronics products are engineered and manufactured to standards set, monitored and controlled by Leupold & Stevens, Inc. with the goal of reliable performance at a reasonable price.  Leupold RX, GX, and Vendetta rangefinders and RCX cameras are warranted by Leupold & Stevens, Inc. and are protected from defects in materials and workmanship for one or two years from the date of purchase depending on model  https://www.leupold.com/ .

Leupold Digital Golf Laser Rangefinder GX-4i2 Pros & Cons

Pros

• Accurate distance measurements
• High-resolution OLED display
• Multiple aiming modes
• Fog-proof and waterproof
• Long battery life

Cons

• Expensive compared to other rangefinders
• May be too complicated for some users
• The Prism Lock feature may not work with all flagsticks

Customer Reviews about Leupold Digital Golf Laser Rangefinder GX-4i2

Customers who have used the Leupold Digital Golf Laser Rangefinder GX-4i2 have praised its accuracy and ease of use. Many have also appreciated its compact design and long battery life. However, some have complained about its high price and complicated features. Overall, the GX-4i2 has received positive reviews from customers and is highly recommended for serious golfers looking to improve their game.