Vortex Viper HD R/T Manuel utilisateur

50 mm Tactical Binocular Manual

HD R/T

BINOCULAR

HD R/T

BINOCULAR

Built on a tough, durable roof prism design, the 50 mm Viper® HD R/T

binocular has brilliant optics that can be relied upon in demanding conditions.

This tactical binocular features the Vortex R/T Ranging reticle—designed to

assist the user in calculating distances.

The Viper TacTical Binocular

Caution: Binoculars are not intended for looking at the sun, or any other

intense light source. Such viewing could damage the retina and cornea of your

eyes—even to the point of causing blindness.

Viper HD Binocular with

R/T Ranging Reticle

HD R/T

BINOCULAR

Objective Lens

Ocular Lens

Adjustable Winged

Eyecup

Strap

Attachment

Tripod Adapter Socket

Center Focus

Diopter

Focus Reticle

Focus

IPD

The eyecups on a Viper® HD R/T binocular feature winged design

that blocks out stray light and rotates for a custom fit. The eyecups

fold up and down so any viewer can see the full field and enjoy

comfortable viewing—with or without eyeglasses.

When not using eyeglasses or

sunglasses, keep the eyecups fully

extended. For the best viewing

when viewing through eyeglasses,

fold the eyecups down.

Adjust the interpupillary distance

The interpupillary distance (IPD) is the distance between the centers

of the left and right eye pupils. Match the IPD of your eyes to that of

the binocular so that you see a single image that is free of shading.

Basic operaTion

Adjust the eyecups

Rotate the binocular barrels

inward or outward to line your

eyes up with ocular lenses.

Distance between the centers

of the ocular lenses.

HD R/T

BINOCULAR

Properly focus the binocular

For the best views, follow this two-step process to properly adjust the

center focus and diopter. Choose an object that is about 20 yards away

from you and stay in the same spot until you have adjusted the binocular

for your eyes.

1. Adjust the center focus—start by closing your

right eye or covering the right objective lens with

your hand. Focus your left eye on the object and

adjust the center focus wheel until the image is in

focus. Leave the center focus in this position as you

adjust the diopter.

2. Adjust the diopter—start by closing your left

eye or covering the left objective lens with your hand. Look through

your right eye and adjust the diopter ring (found on the right eyepiece)

until the object is in focus. Make note of

this diopter setting in case you need to set it

again. From this point on, you will only need

to use the center focus wheel.

Adjust the reticle focus

When you hold the binocular, the reticle focus is on the left ocular. This

focus is used to adjust the reticle image so that it is clear and sharp.

Focusing the reticle is most easily done with the right eye closed while

setting the focus. While looking at a white wall or the sky, adjust the reticle

focus until you see a clear, sharp image.

Reticle

Focus

Once set for a particular user, the

reticle focus can be left in place.

HD R/T

BINOCULAR

The R/T reticle is based on a form of angular measurement called

the milliradian (mrad for short). The angular measurements allow

a user to calculate ranges

when comparing the

reticle to objects of known

dimensions. The key to

effective ranging, using

this reticle, is knowing the

measurements of objects

that are commonly seen in

the vicinity.

using The Viper r/T ranging reTicle

Reading the R/T Reticle

Fine crosshairs

subtend .05 mrad.

Heavy crosshairs

subtend .5 mrad.

1 mrad subtension marks

.5 mrad subtension marks

.5 mrad 1 mrad

28cm / 11”

50cm / 20”

35cm / 14”

44cm / 17”

79cm / 31”

All silhouette dimensions are accurate

at these ranges listed in meters.

The Viper HD R/T reticle

features a secondary system of

of silhouettes for quick ranging

(see page 12).

Subtensions

HD R/T

BINOCULAR

1110

Range (Yards)

Target Size (Yards) x 1000

Measured mrads

Range (Yards)

Target Size (Inches) x 27.8

Measured mrads

Range (Meters)

Target Size (Meters) x 1000

Measured mrads

Precision ranging with mrads

Mrad measurements are very effective for ranging using simple formulas.

Knowing the size of the target, or a nearby object, is essential to using these

formulas.

Before ranging, be sure the reticle is in focus (see page 6). Using either the

vertical or horizontal mrad scale, place the reticle on the target of known

dimensions and read the number of mrads spanned.

You’ll obtain the maximum accuracy in ranging by calculating exact mrad

measurements—try to estimate the mrad measurement in 1/10s if possible.

To help calculate fractions of mrads, the Viper HD R/T reticle uses both 1

mrad and .5 mrad graduations on the crosshair. Fine crosshairs subtend .05

mrads.

Accurate measuring will depend on having a very steady hold. Be sure

to solidly brace the arms when measuring—or use a tripod mount for

maximum accuracy. Once you have an accurate mrad reading, use one of

the formulas to calculate the distance.

Ranging a 6-foot man (2 yards) at 4 mrads yields 500 yards.

2 x 1000

4 mrads 500 Yards

HD R/T

BINOCULAR

1312

Quick ranging with silhouettes

To use the reticle, simply match the

person or object being ranged to the

silhouette that is closest in shape and read

the indicated yardage. Note: The best

accuracy will be obtained by bracing the

arms or using a tripod mount. The Viper HD tactical binocular comes with

tethered objective lens covers plus a soft,

waterproof piece that completely covers the

eyepieces. For convenient use, simply snap the

eyepiece cover around the neckstrap.

Lens Covers

The Viper HD R/T’s protective case provides safe storage between viewing

sessions. The carry strap is already attached to the case.

Carry Case

accessories

Securely attach your binocular to the binocular strap:

Neckstrap

1. Thread the end of the

strap from the bottom

up through the strap

attachment loop.

3. Adjust the overall

length and pull the strap

webbing tight so it is

secure within the buckle.

2. Hold the buckle and

thread the end of the

strap inside the buckle.

Note: Please do not thread a metal ring directly onto the strap attachment loop

when attaching rings or clips for other after-market equipment. Instead, use nylon zip

ties according to the manufacturer’s instructions.

28cm / 11”

50cm / 20”

44cm / 17”

Using silhouette widths—The silhouettes used in the R/T reticle are based on

an average 20-inch shoulder width and 11-inch head width. Take your range

reading from the silhouette that most closely matches the size of the person.

Using silhouette heights—Heights of the silhouette may also be used to

quickly estimate range when comparing objects of known dimensions. For

example, assuming a typical back-to-brisket dimension of 17 inches, a deer can

be ranged using the 17-inch shoulder height on any of the silhouettes.

Examples

Ranging with

Silhouette Width

20 Inches

Ranging with

Silhouette Height

17 Inches

Use the width or height

of the silhouette for

quick ranging of a target.

HD R/T

BINOCULAR

1514

lens care

Maintain the optical brilliance of the Viper HD tactical binocular by keeping

lens surfaces free of dirt, oils, and dust.

Protect lenses while out in the field

Make use of the provided eyepiece and tethered objective lens covers to

protect the lenses when not viewing. If the optics are exposed to moisture,

keep the caps off and allow the optics to dry out completely before putting

them in the case for storage.

Keep lenses clean

In order to enjoy the best views through your binocular, take time to

regularly clean the exterior lenses:

1. Remove any dust or grit from lenses before wiping. Use a can of

pressurized air, soft camel hair brush, or an acrylic optical brush.

2. Clear lenses of smudges, fingerprints, or eyelash oil. Fog the lenses with

your own breath, then use a non-abrasive lens cloth to clean the lenses.

Note: Use lens cleaning fluid and optical paper to clean lenses. Never use facial tissue,

heavy cotton, or flannel clothing on lenses—these materials can scratch the surface

of a lens.

The Vip WarranTy

We build optics based on our commitment to your absolute satisfaction.

That’s why Vortex products are unconditionally guaranteed and we make

this Very Important Promise to you—a Very Important Person.

Rest assured that in the event your Viper HD binocular becomes

damaged or defective, Vortex Optics will repair or replace the binocular

at no charge to you. Call Vortex Optics at 800-426-0048 for prompt,

professional, and friendly service.

Vortex Optics

2120 West Greenview Drive

Middleton, WI 53562

[email protected]

Visit www.vortexoptics.com for more information. Canadian customers may

visit www.vortexcanada.net for customer service information.

Note: The VIP warranty does not cover theft, loss, or deliberate damage to the

product.

#BIN-VPR-RT-50-13A

HD R/T

BINOCULAR

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