Nikon | Laser IRT | User's Manual | Nikon Laser IRT User's Manual

Laser IRT 4 12×42
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.
3-25, Futaba 1-chome, Shinagawa-ku, Tokyo 142-0043, Japan
Tel:+81-3-3788-7697 Fax:+81-3-3788-7698
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!
E
INSTRUCTION MANUAL
Printed in Japan (505B) /1E
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 PRECAUTIONS" and instructions on correct usage accompanying the product. Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
Keep this manual within reach for easy reference.
Nomenclature
Objective lens
Eyepiece lens
Elevation Adjustment
Windage Adjustment
Eyepiece Adjustment
Power index Dot
Power Scale
Power Selector Ring
Adjustment Cap
POWER button
Remote Control Detector (both side)
Battery Chamber Lid
Battery Chamber Lid Screw
Remote control unit
Remote control button
LED
Product number
Explanatory label
Fig. 1
Specifications and design are subject to change without notice.
No reproduction in any form of this manual, in whole or in part
(except for brief quotation in critical articles or reviews), may be
made without written authorization from NIKON VISION CO., LTD.
The product(s) described herein may be subject to export control
regulations in the relevant country (ies). It (they) should not be
exported without authorization of the exporting govermental authority
if the regulations apply.
Fig. 2
Key Features
Measuring range: 33 yards-766 yards
Distance measurement display: 1 yard
Easy-to-aim 4-12x optical observation system
Waterproof design (NOT designed for underwater usage)
Invisible/Eyesafe FDA Class I Laser
8-second results display
Compact, ergonomic design
Automatic shut-off (after approx. 8 sec. 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.
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 the 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 fall 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
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
n 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
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.
Fig. 4
Fig. 3
Status of the Internal Display
1. Fig. 10, 11 - Reticle (aiming system)
Use to take aim at the target. Position the target at the center of the reticle, which will always appear in the display.
2. [
] - Distance/measurement status display
Digitally Indicates measured distance in yards. Also indicates measuring status such as "Measurement in progress". "Measurement unsuccessful" or "Unable to measure".
Display of results: ( 100/yards)
e.g.55 yards = [
]
Display of results: ( 100/yards)
e.g.576 yards = [
]
[
] - Now measuring
[
] - Fail to measure or can not measure distance.
3. [
] - Indicates distance being measured in yards and battery condition.
4. [
] - one shot measurement mode.
Display at "after power on" or "Measurement mode is changed".
5. [
] - Normal (continuous) measurement mode
Display at "Measurement is over" or "Measurement mode is changed".
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
Fig. 6
Fig. 5
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.
a
b
Fig. 7
Battery condition
Scope
flashing: Battery charge is low and battery should be replaced.
Remote control unit
No Information
shows a position of hinge stopper
Fig. 8
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
Specifications
Riflescope
1. Diopter adjustment
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 progper alinment and proper eye relief otherwise the view will "black out".
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 1/4 minute of angle with a click at intervals of 1/4
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 angle up one minute of 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 ajustment.
Nikoplex Reticle
Eyepiece Adjustment
Eye Relief
Exit pupil
Eye relief
Field of view at 100 yds.
Objective outside diameter
Length
Weight
Adjustment graduation
Maxinum internal adjustment
(Elevation & Windage)
Parallax setting
(at factory)
Outside Diameter of
Eyepiece
Laser
Class
Wavelength
Pulse duration
Output
Beam Divergence
Others
Measuring range
Distance display
Structure
4-12x42
(mm)
(in)
(mm)
(in)
(mm)
*
(in)
(m)
*
(ft)
(mm)
(in)
(mm)
(in)
(g)
(oz)
**
(moa)
**
(moa)
(m)
(yards)
(mm)
(in)
Operating temperature
Remote control unit
Power source
Fig. 10
Fig. 9
MODEL
SCOPE
Actual magnification
Objective diameter
BDC Reticle
Safety & EMC
4x-12x
42
1.65
3.5★
0.14★
74-75
2.9-3.0
7.6-2.5
25.0-8.2
52
2.05
330
13
700
24.7
1/4: 1 click
50
91.44
100
39
1.78
FDA Class I
905nm
26ns
0.036 degree
33-766 yards
1 yard step
Scope: Waterproof (maximum depth of 2 meters for up to 5 minutes),
Battery chamber: Water resistant ***
10 to 50
Attachable to a gun with Velcro
Scope: 3 volts DC, CR-2 lithium battery x1
Remote control unit: 3 volts DC, CR2025 lithium battery x1
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.
Fig. 12
Fig. 11
3. Measuring
Normal (continuous) measurement mode
ONE SHOT measurement mode
START
START
Depress
Power button
another
target
Depress Remote
control button
or
Depress
Power button
or
Depress Remote
control button
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.
Align the reticle cross
and Target
O
Measurement
Align the reticle cross
and Target
same
target
Repeat
action
"Distance" or " "
(Success or Failure)
No
Change to Measurement mode
Depress
Power button
Depress POWER or REMOTE
control button over 2 seconds
until the display changes
No
or
Depress Remote
control button
Measurement
Over
12 seconds
"Distance" or " "
(Success or Failure)
Over
8 seconds
No
Stand-by mode *
Over
8 seconds
Stand-by mode *
(Display on seven segment)
Over
2 hours
(Action of Unit)
Stand-by mode *
Power OFF **
] ("Cannot measure") appears
Closer target cannot be measured
Target beyond a certain distance cannot
be measured
Measurement result is unstable
Incorrect result is displayed
Check Points
Depress POWER button.
Check and replace battery if necessary.
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.
Be sure to hold the unit steady while depressing the POWER button.
Be sure the target is within measuring range (33-766 yards)
Be sure that nothing, such as leaves or grass, is between the Laser IRT and the target.
Be sure that nothing, such as leaves or grass, is between the Laser IRT and the target.
Replace battery.
Be sure that the target shape and condition is appropriate to reflect the laser beam.
Be sure to hold the unit steady while measuring the distant.
Be sure that nothing, such as leaves or grass, is between the Laser IRT and the target.
Replace battery.
Be sure that 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.
Over
2 hours
(Operation of Unit)
Power OFF **
Symptom
Unit does not turn on - LED fails to illuminate
Target range cannot be obtained
[
C
Power OFF **
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.
Unit accepts operation with Remote control unit.
Unit does not accept operation with Remote control unit.
At Power OFF mode, before using the Remote control unit Power switch must be depressed.
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 or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Consult the dealer or an experienced radio/TV technician for help.
4. Selecting measurement mode
Change to Measurement mode
Normal
(continuous)
measurement
mode
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 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 a 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.
Depress POWER or REMOTE
control button over 2 seconds
until the display changes
Continuous measurement
The instrument continuously measures distance for 12 seconds.
One shot
measurement
mode
ITEM SUPPLIED
Body...................................................1pc.
Eyepiece cap ..............................
1pair
Objective cap
Battery (CR2 & CR2025)............1pc. each
Hood..............................................Option
Do not use the Laser IRT for purposes beyond the limits of its stated accuracy.
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