SVBONY SV27 Manual Del Usuario

Congratulations on your choice of our binocular. Your binocular is a precision
instrument designed to provide many years of pleasurable viewing. This
guide will help you achieve optimum performance by explaining how you can
adjust the binocular to your eyes, how to care for this instrument, and. Read
the instrument carefully before using your binocular. Remove the eyepiece
lens cap covering, and then remove the objective lens cover.
Package Includes
7x50 Binoculars
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Soft Bag
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Neck Strap
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Eyepiece Cap
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Two Objective Lens Cap
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Lens Cleaning Cloth
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Two Button Battery
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User Manual
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Technical specifications
1. Magnification: 7x
2. Objective lens: 50mm
3. Eyepiece diameter: 23mm
4. Prism System: Porro Bak4
5. Field of View: 396 ft/1000yds
6. Exit Pupil: 7mm
7. Eye Relief: 24mm
8. Waterproof Grade: IPX7
9. Lens Coating: FMC
10. Body Material: Plastic steel + Rubber
11. Eyecups Type: Folding Removable
12. Focus System: IF
13. Tripod Adaptable: Yes
14. Net Weight: 876g
Set the Rubber Eyecups
Keep the Rubber Eyecup up if you do not wear eyeglasses but fold them
down if you do wear eyeglasses to obtain the maximum field of view.
Installing the Batteries
The batteries included with your binocular are for illuminating the compass,
so you can see it easily in the dark. You need to install the batteries which
are located in the case pocket. Unscrew the battery cap by hand and then
remove the screw with a coin or screwdriver. The batteries are to be installed
with the positive (+) side facing up towards you. Replace the screw and
battery cap. If you will not be using the binocular for a long period of time (a
few months or more), you should take the batteries out to preserve their life.
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Do not look directly into the sun with the binocular; this can be
very damaging to the eyes.
Adjusting the Interpupillary Distance (IPD)
Since the distance between the eyes (specifically, the distance between the
centers of the pupils) varies among individuals, the two eyepieces of the
binoculars must be correctly aligned (adjusted). This is called adjusting the
interpupillary distance. To adjust this distance, lift the binoculars up to your
eyes (using both hands) and look through them at an object in the distance.
Move the two halves of the binoculars about the hinge until you see one clear
circle of image through both eyes.
Focusing
Since most people have a variance of vision from their left eye to their right
eye, you must adjust the focusing system. Use the following steps to achieve
focus:
(1) Close your right eye and look through the left side of the binoculars with
your left eye at the subject matter. Rotate the center focusing wheel until
the image appears in sharp focus;
(2) Close your left eye and look through the right eyepiece (called the diopter).
Rotate the right eyepiece until the image appears in sharp focus;
(3) Look through both eyepieces with both eyes open. Since you've already
adjusted the right eyepiece, use only the center focusing wheel to refocus
on a new object at a different distance.
Hint: Eyeglasses worn for nearsightedness should be worn when using
binoculars as you may not be able to reach a sharp focus at infinity
without them.
Using the Reticle as a Measuring Device
1. View Angle
View Angle of an object is the angle between the rays from the Binocular to
its edges. Usually, this angle is measured at the horizontal or vertical direction,
and defined as Horizontal View Angle and Vertical View Angle. A mil's Reticle
(shown to the right) that has a horizontal and vertical scale can measure the
viewing angle of an object. The SV27 uses 10 mils for each number
(1, 2, 3... as shown here).
2. Measuring the Horizontal View Angle
When the Horizontal View Angle is smaller than the horizontal scale range
(-40~+40 mils) inside the binocular, aim one edge of the object at a horizontal
scale line (the center or the outmost line is selected according to the image
size of the object usually) and read its value. Then read the value of the scale
at which another edge was located. Add these two values and this is the
measured Horizontal View Angle. The Horizontal View Angle of the target
(sailboat) is 5 decade mils (50 mils).
When the Horizontal View Angle is larger than the horizontal scale range
(-40~+40 mils), use vertical line splits (for example: mast, sail, etc.) on the
object can be selected to make the necessary estimated measurements in a
step by step fashion.
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