Nikon Binoculars 4 12X42 User Manual

Nikon Laser IRT 4-12X42  
Instruction Manual  
Congratulations on your choice of a Nikon Laser IRT. Your new scope is the finest  
example of Nikon’s rugged and durable construction and precision bright optics;  
important qualities for a serious shooter’s riflescope.  
Whether you use your scope for hunting or for target shooting, the procedure for  
mounting is identical. After mounting the scope on your riflescope, follow the  
procedures for reticle alignment.  
When setting the reticle for hunting, you should determine your standard range and  
then adjust the reticle based upon that reading distance. For targets which vary  
from that standard distance you may simply adjust the position of the reticle in  
relation to your target, or you may wish to use the procedure for trajectory  
compensation. It’s up to your personal preference.  
We hope that you will enjoy your new Nikon Laser IRT for many years to come.  
Enjoy using it, and above all, always follow safe shooting procedures!  
 
Waterproof design (NOT designed for underwater usage)  
Invisible/Eyesafe FDA Class I Laser  
8-second results display  
Compact, ergonomic design  
Stand-by mode (after approx. 8 sec. Unattended)  
Automatic shut-off (after approx. 2 hours. Unattended)  
Default to “Last Use” settings  
12-second continuous measuring function  
Diopter adjustment function  
Infrared/manual control distance measurement system  
The Nikon Laser IRT emits invisible, eyesafe, infrared energy pulses that reflect off  
the selected target back to its optical receiver. Sophisticated precision charge  
circuitry is used to instantaneously calculate distances, by measuring the time it  
takes for each pulse to travel from the rangefinder to the target and back. The  
maximum range of the instrument depends on the reflectivity of the target, its color,  
surface finish, size and shape.  
The following factors ensure best range and accuracy:  
Nighttime use  
Cloudy weather  
Bright-colored targets  
Targets with highly reflective surfaces  
Targets with shiny exteriors  
Large-size targets  
Shooting targets facing at 90 degrees  
Measurement may result in inaccuracy or failure in the following cases:  
Slender or small target  
Target has diffusing reflective surface  
Target does not reflect the laser beam (glass, a mirror, etc.)  
Black target  
Target has pronounced depth  
In snow, rain or fog  
Target measured through glass  
Reflective surface measured from diagonal direction  
Moving target  
Obstacle moving in front of the target  
When targeting the surface of water  
 
Status of the Internal Display  
Changing Battery  
Type of battery  
Scope – 3V CR2 Lithium Battery  
Remote control unit – 3V CR2025 Lithium Battery  
Battery change  
Scope  
1. Loosen the Battery Chamber Lid screw with coin. (Fig. 5)  
2. Replace the CR2 Lithium Battery correctly. (Fig. 6)  
3. Tighten the lid screw firmly for air tightness  
Remote control unit  
1. Insert the metal plate into the groove of opposite side of LED. (Fig. 7)  
2. Press down the metal plate (a) to lift up the rear cover (b). (Fig. 7) There are eight  
hinge stoppers. (Fig. 8) (Be careful to break the hinge stopper.)  
3. Replace the CR2025 Lithium Battery correctly. (Fig. 8)  
4. Put the rear cover back and press the edge of cover to catch the hinge stopper.  
 
Battery condition  
Scope  
Y
flashing: Battery charge is low and battery should be replaced.  
Remote control unit  
No information  
Install the Remote control unit  
1. The Remote control unit is attached near the thumb of the hand which is holding the  
gun.  
2. The LED on the Remote control unit must turn the direction of the Remote control  
Detector. (Fig. 2 & 3)  
3. Then fix the Remote control Unit with the band.  
Effective control range is less than 20 inches.  
Operational Summary  
Riflescope  
1. Diopter adjustment  
(1) Look through the eyepiece with your eye positioned about 4 inches away from  
the eyepiece lens (Fig. 9), and you will see the Nikoplex reticle (Fig. 10), or the BDC  
reticle (Fig. 11).  
 
Be sure your eye is positioned within proper alignment and proper eye relief  
otherwise the view will “black out”.  
(2) Point the objective end of the scope at the sky (Do not point at the sun) or at a  
plain unpatterned wall.  
Turn the eyepiece adjustment counter-clockwise and then turn it clockwise until the  
reticle appears sharp.  
2. Magnification  
The Laser IRT 4-12X42 has a variable magnification from 4 to 12X.  
To change powers, just rotate the power selector ring until the desired  
magnification appears adjacent to the power index dot (Fig. 2).  
3. Adjustment of the riflescope  
Sighting through the riflescope, align the rifle with your aiming point on the target  
and shoot a trial round. If the bullet does not hit the aiming point, adjust the  
elevation and windage after removing the Adjustment cap, as follows:  
4-12X42  
For the Laser IRT adjustment is made by turning the grip by hand. If the bullet  
hits under the aiming point, turn the grip in the direction of the arrow marked  
“U”. If the bullet hits to the left of the aiming point, turn the grip in the direction  
of the arrow marked “R” (Fig. 12).  
Note:  
The windage and elevation scales of the Laser IRT 4-12X42 is calibrated in  
divisions of minute of angle with a click at intervals of minute of angle (half  
division).  
When adjusting the reticle to the point of aim, remember that one minute of  
angle equals approximately one inch (2.54 cm) at 100 yards (91.44 m).  
Therefore, if the impact point is two inches (5.08 cm) low and one inch (2.54 cm)  
right at 100 yards (91.44 m) Parallax Setting, you should adjust two minutes of  
the angle up one minute of the angle left.  
Laser Range Finder  
Caution – use of controls or adjustments or performance of procedures other  
than those specified herein may result in hazardous radiation exposure.  
1. Install a battery in the battery chamber. (See “Changing Batteries”)  
2. Diopter adjustment Refer to Riflescope Diopter adjustment.  
 
 
3. Measuring  
 
Specifications  
MODEL  
4-12x42  
SCOPE  
Actual magnification  
Objective diameter  
4x-12x  
(mm) 42  
(in) 1.65  
Exit pupil  
(mm) 3.5  
(in) 0.14  
Eye relief  
(mm) 74-75  
* (ft) 25.0-8.2  
(mm) 52  
* (in) 2.9-3.0  
Field of view at 100 yds.  
Objective outside diameter  
Length  
(in) 2.05  
(in) 13  
(mm) 330  
Weight  
(g) 660  
(without battery) (oz) 23.3  
Adjustment graduation **  
Maximum internal adjustment **  
: 1 click (moa)  
40 (Elevation & Windage) (moa)  
Parallax setting (at factory) (yards) 100  
Outside Diameter of Eyepiece  
(mm) 39  
(in) 1.78  
LASER  
Class  
FDA Class I  
905nm  
30ns  
Wavelength  
Pulse duration  
Output 15W  
Beam Divergence  
0.036 degree  
OTHERS  
Measuring range  
Distance display  
Structure Scope:  
33-766 yards  
1 yard step  
Waterproof (maximum depth of 2 meters for  
up to 5 minutes),  
Battery chamber:  
Operating temperature  
Remote control unit  
Power source  
Water resistant ***  
–10º to +50º  
Attachable to a gun with the band  
Scope:  
Remote control unit:  
3 volts DC, CR-2 lithium battery x1  
3 volts DC, CR2025 lithium battery x1  
Safety & EMC  
21 CRF PART 1040.10: 1985  
FCC Part 15/Sub Part B Class B  
 
When maximum magnification (12x) is selected.  
*(at minimum magnification) – (at maximum magnification)  
** moa = minute of angle  
*** The battery chamber is water resistant, not waterproof. Water may enter the  
device if the laser IRT is submerged in water. If water enters the battery chamber,  
wipe out any moisture and allow time for the chamber to dry.  
Waterproof models:  
The Laser IRT is waterproof, and will suffer no damage to the optical system if  
submerged or dropped in water to a maximum depth of 2 meters for up to 5  
minutes.  
The Laser IRT offers the following advantages:  
Can be used in conditions of high humidity, dust and rain without risk of  
damage.  
Nitrogen-filled design makes it resistant to condensation and mold.  
Observe the following when using the Laser IRT:  
As the unit does not have perfectly sealed structure, it should not be  
operated nor held in running water.  
Any moisture should be wiped off before adjusting movable parts (Power  
selector Ring, eyepiece, etc.) of the Laser IRT to prevent damage and for  
safety reasons.  
To keep your Laser IRT in excellent condition, Nikon Vision recommends regular  
servicing by an authorized dealer.  
Troubleshooting/Repair  
If your Nikon Laser IRT should require repair, please contact your local dealer for  
details regarding where to send it. Before doing so, you are advised to consult the  
Troubleshooting Table below.  
Symptom  
Check Points  
Unit does not turn on –  
LED fails to illuminate  
• Depress POWER button  
• Check and replace battery if necessary  
 
Target range cannot be obtained  
• Be sure that nothing, such as your hand or  
finger, is blocking the laser emission aperture  
and laser detector.  
• Be sure that the laser emission aperture and  
laser detector are clean. Clean them if  
necessary.  
• Be sure that the target shape and condition  
is appropriate to reflect the laser beam.  
• Replace battery.  
[----] (“Cannot measure”) appears • Be sure to hold the unit steady while  
depressing the POWER button.  
• Be sure the target is within measuring range  
(33-766 yards)  
Closer target cannot be measured • Be sure that nothing, such as leaves or  
grass, is between the Laser IRT and the target.  
Target beyond a certain distance  
cannot be measured  
• Be sure that nothing, such as leaves or  
grass, is between the Laser IRT and the target.  
Measurement result is unstable  
• Replace battery.  
• Be sure the target shape and condition is  
appropriate to reflect the laser beam.  
• Be sure to hold the unit steady while  
measuring the distance.  
• Be sure that nothing, such as leaves or  
grass, is between the Laser IRT and the target.  
Incorrect result is displayed  
• Replace battery.  
 
• Be sure the target shape and condition is  
appropriate to reflect the laser beam.  
• Be sure that nothing, such as leaves or  
grass, is between the Laser IRT and the target.  
If problems persist after consulting the Troubleshooting Table, please contact your  
local dealer to check/repair the Laser IRT. Never let anyone other than the official  
representative of the product manufacturer check or repair the Laser IRT. Failure to  
follow this instruction could result in injury, or damage to the product.  
This device complies with Part 15 of the FCC Rules. Operation is subject to the  
following two conditions: (1) This device may not cause harmful interference, and (2)  
this device must accept any interference received, including interference that may  
cause undesired operation.  
This equipment has been tested and found to comply with the limits for a Class B  
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to  
provide reasonable protection against harmful interference in a residential  
installation. This equipment generates, uses and can radiate radio frequency energy  
and, if not installed and used in accordance with the instructions, may cause  
harmful interference to radio communications. However, there is no guarantee that  
interference will not occur in a particular installation. If this equipment does cause  
harmful interference to radio or television reception, which can be determined by  
turning the equipment off and on, the user is encouraged to try to correct the  
interference by one or more of the following measures:  
- Reorient to relocate the receiving antenna.  
- Increase the separation between the equipment and receiver.  
- Consult the dealer or an experienced radio/TV technician for help.  
Do not use the Laser IRT for purposes beyond the limits of its stated accuracy.  
CAUTIONS BEFORE USE  
Please observe the following guidelines strictly so you can use the equipment  
properly and avoid potentially hazardous problems. Before using this product, read  
thoroughly the “SAFETY AND OPERATION PRECAUTIONS” and instructions on  
 
correct usage accompanying the product. Keep this manual within reach for easy  
reference.  
! WARNING  
This indication alerts you to the fact that any improper use ignoring the contents  
described herein can result in potential death or serious injury.  
! CAUTION  
This indication alerts you to the fact that any improper use ignoring the contents  
described herein can result in potential injury or material loss.  
SAFETY AND OPERATION PRECAUTIONS  
! Warning  
Never look directly at the laser beam or directly at the sun when using the  
Nikon Laser IRT.  
Do not depress the POWER button while aiming with the eye or looking into  
the optics from the objective side.  
Do not operate the unit with other additional optical elements, such as lenses  
or binoculars. Using an optical instrument together with the Nikon Laser IRT  
increases the danger of damaging the eyes.  
Do not disassemble the Nikon Laser IRT. A product that has been  
disassembled is not guaranteed by the manufacturer.  
If the Laser IRT’s body cover is damaged, or if it emits a strange sound due  
to dropping or for some other cause, immediately remove the battery and  
stop using.  
! Cautions  
When not using the Nikon Laser IRT, do not push the POWER button.  
Do not leave the Nikon Laser IRT within reach of small children.  
Rain, water, sand or mud should be removed from the Laser IRT body  
surface as soon as possible, using a soft, clean, dry cloth.  
Although the Nikon Laser IRT is waterproof, it is not designed for use  
underwater.  
Do not leave the Nikon Laser IRT in an unstable place, as it may fail and  
cause injury, or damage the equipment.  
Do not look through the Nikon Laser IRT while walking. You may walk into  
something and get hurt.  
Do not leave the Nikon Laser IRT in a car on a hot or sunny day, or near  
heat-generating equipment. This may damage or negatively affect it.  
 
Do not leave the Nikon Laser IRT in direct sunlight. Ultraviolet rays and  
excessive heat may negatively affect or even damage the unit.  
When the Nikon Laser IRT is exposed to sudden changes in temperature,  
water condensation may occur on lens surfaces. Do not use the product until  
the condensation has evaporated.  
Do not use alcohol for cleaning the main body.  
Do not leave the polyethylene bag used for packaging within the reach of  
small children.  
Be careful that small children do not inadvertently swallow the adjustment  
cap. If it does happen, consult a doctor immediately.  
If your Nikon Laser IRT should fail to operate correctly, discontinue use  
immediately and consult the Troubleshooting Table. If you are unable to fix  
the problem, contact your local dealer for instructions on where to send it for  
repair.  
CARE AND MAINTENANCE  
Lenses  
When removing dust on the lens surface, use a soft oil-free brush.  
When removing stains or smudges like fingerprints from the lens surface,  
wipe the lenses very gently with a soft clean cotton cloth or quality oil-free  
lens tissue. Use a small quantity of pure alcohol (not denatured) to wipe  
stubborn smudges. Do not use velvet cloth or ordinary tissue, as it may  
scratch the lens surface. Once the cloth has been used for cleaning the  
body, it should not be used again for the lens surface.  
Main Body  
Clean the body surface with a soft, clean cloth and a dry cloth. Do not use  
benzene, thinner, or other organic agents because they may cause  
discoloration or rubber degeneration.  
Storage  
Water condensation or mold may occur on the lens surface because of high  
humidity. Therefore, store the Nikon Laser IRT in a cool, dry place.After use  
on a rainy day or at night, thoroughly dry it at room temperature, then store  
in a cool, dry place.  
NOTES ON LITHIUM BATTERY  
If handled incorrectly, battery may rupture and leak, corroding equipment and  
staining clothing. Be sure to observe the following:  
 
Install battery with the + and – poles positioned correctly.  
Battery should be removed when exhausted or during extended periods of  
non-use.  
Use the same type of battery.  
If battery fluid contacts eyes or skin, rinse well with water. If swallowed,  
consult a doctor immediately.  
Do not short-circuit battery chamber terminals.  
Do not carry batteries together with keys or coins in a pocket or bag. This  
may overheat and short-circuit batteries.  
Do not put batteries in fire or water. Never disassemble batteries.  
Do not change batteries.  
Do not subject stored batteries to extremes in temperature.  
Do not subject batteries to strong vibrations or shock.  
In the event that you should require service for your Nikon RIFLESCOPE, in case of  
U.S.A. market, please send it directly to:  
Nikon Scope Service  
841 Apollo Street, Suite 100  
El Segundo, CA. 90245-4721  
1-800-Nikon SV.  
In other market, please bring it to dealer from which you purchased it.  
Nikon Inc.  
1300 Walt Whitman Road  
Melville, NY 11747-3064  
P: (631)547-8632  
F: (631)547-4040  
 

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