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 Night vision Goggles

Night Vision Goggles D-203M - User Guide

Contents

1 Safety Instructions  
2 Introduction  
3 Specifications  
4 Description of the D203M  
5 Preparation for use and operation  
6 Preparation for use and operation with the head mask  
7 Preparation for use and operation with the aviation helmet THL-5P type  
8 Troubleshooting  
9 Manufacturer's warranty  
10 Acceptance certificate  
11 Notes  

 

Before operating these D203M goggles, please read this guide completely and retain it for future reference.

SAFETY INSTRUCTIONS

 Read all these instructions. Do not use these Night Vision Goggles in daylight with lens cover removed. It may damage the D203M.

Avoid aiming these Night Vision Goggles to bright light sourse. Do not store these Night Vision Goggles out of the case. Remove the battery out of the battery compartment if the Night Vision Goggles are not in use for a long time.

Never reassemble the unit. This Night Vision Goggles contains high-voltage parts. You may suffer electric shock if you touch these parts. If any problems appear call your authorized dealer. Use only dumps cloth to clean the unit surface. Always handle the unit with care. Avoid shocks, dust and dampness.

 

INTRODUCTION

Thank you for purchasing our Night Vision Goggles (D203M)

The following list contains all items included in the D203M package-

•   D203M

•   Carrying case

•   Packing box

•   User's guide

•   Batteries AA type

•   Head mask (optional)

•   Aviation helmet THL-5Mp type (optional)

 

The D203M is the passive noctovisor designed for multipurpose night observation.

The integrated IR searchlight enables you to see in absolute darkness.

SPECIFICATIONS

Lens F26/1.4
Magnification 1x
Field of View 40°
Eye-piece adjustment range ±4 D
Eyes base 58. ..70 mm
Detecting range (at the moonlight 1/4 moon) 350 m
Supply voltage (two batteries 3 VDC
Batteries life time min. 30 h  (20°C)
Dimensions 158x56x115
Weight 0.53 kg

When using the head mask one can "flip-up" (relate) the goggles at 90° angle and fix it in this position, also there is the ability to position and fix the goggles at the most comfortable distance from the operator's eyes. When using the aviation helmet THL-5Mp one can "flip-up"' (rotate) the goggles at 30°, 120° or 150° angles and fix it in chosen position; there are also the ability of vertical positioning (15 mm) and the ability to position and fix the goggles at the most comfortable distance from the operator's eyes

 

DESCRIPTION OF THE D203M

The general view of the D203M is presented in Figure 1.

1.      D203M body

2.      Eye-pieces

3.      Eye-pieces focusing rings

4.      Lens

5.      Lens focusing ring

6.      IR searchlight lens

7.      Power ON/OFF rotary switch

8.      IR searchlight ON button

9.      Battery compartment cover

10.  Lens cover

11.  Image intensifier tube body

•    The D203M has aluminium, black anodized body (1) with optical system inside. The body (11) contains image intensifier tube. Due to the special eyepieces (2) the device can compensate the difference of the distance between the eyes of different persons. The range of compensation is 58... 70 mm

•    The access to the battery compartment is available after the cover 9 is removed. Controls:

•   The D203M has one five-positioned rotary switch (7). The following positions are available:

  1. The D203M is OFF.

  2. The Image intensifier tube is ON.

  3. The Image intensifier tube is ON and the IR searchlight is ON with low output power.

  4. The Image intensifier tube is ON and the IR searchlight is ON with big output power.

  5. The D203M is OFF.

•    Pressing button (8) can turn ON the IR searchlight also.

The lens focusing is available by turning ring 5: clockwise -0,25 m, anti clockwise -infinity. Eyepieces focusing is available by turning rings 3: clockwise -4D, anti-clockwise +4D.

PREPARATION FOR USE AND OPERATION

 

Make sure that the lens cover is on before snitching ON the D203M in daylight! There is 1.2-inm diameter hole in the lens cover to test the D203M in daylight.

To test the D203M in daylight;

•   make sure that the lens cover is on

•   remove the batten' compartment cover (9) and insert batteries (see picture near the batten- compartment cover) with positive terminals inside the body;

•   turn switch (7) (Fig. 1) one position clockwise to switch on the D203M

•   turn rings (3) and (5) (Fig. 1) to focus the picture.

 

In the nighttime remove the lens cover. Cover the lens after the operation is finished.

 PREPARATION FOR USE AND OPERATION WITH THE HEAD MASK

Turn the screw (5) (Fig.2) anti-clockwise until stop Press the button (6) and put the goggles on the bracket (3) guides. Fix the device securely adjusting head mask belts according to your size. Move the goggles horizontally along the bracket (3) guide to the most comfortable position and fix it by turning the screw (5) clock­wise. Press button (4) to "flip-up" (rotate) the goggles. When the rotation is started the button (4) can be released: the goggles would be fixed in upper posi­tion automatically. To move the goggles back one has to perform the listed above operations inversely. The device turning ON and OFF procedures is listed in p. 6 of this guide.

  1. The night vision goggles D203M

  2. Head mask

  3. The rotating bracket (set to the head mask)

  4. The rotating button

  5. Horizontal movement fixing screw

  6. The goggles self-taking off preventing button

 

PREPARATION FOR USE AND OPERATION WITH THE AVIATION HELMET THL-5p TYPE

1.      Put on the aviation helmet according to its manual; tighten belts (7) (Fig.3). Optical Filter must be lifted up.

2.      Put the goggles on the mounting bracket (3) (Fig.3) guide (the screw (4) must beunscrewed until stop). Fix the goggles by the screw (4).

3.      Having turned the screw (5) anti-clockwise, adjust the vertical position of the goggles and fix it by turning the screw (5) clockwise.

4.       Set free the crew (4) and position the goggles to the most comfortable distance from your eyes tighten the crew (4) after this. 

Caution!

If you'll find the vertical movement to he not enough, then you'll need to adjust the aviation helmet position on your head using its belts system according to the helmet's manual.

5.       Turn the screw (9) anti-clockwise until stop and mount the counterweight (8) to the helmet guide. The guide is to be positioned by its gearing to the bottom. Fix the counterweight by turning the screw (9) clockwise until stop.

6.       To remove the counterweight turn the screw (9) anti-clockwise, press the button (10)and move the counterweight up (see arrow in Fig.3).

1.Aviation helmet THL-5Mp

2.Night vision goggles D203M

3.Mounting bracket

4.Horizontal movement fixing screw

5.Vertical movement fixing screw

6.Rotating button

7.Belts

8.Counterweight

9.Fixing screw

10. Remove button

To "flip-up" (rotate) the goggles press the button 6 and turn the goggles through 30° , 120° or 150°. When the rotation is started the button (6) can be released: the gog­gles would be fixed in upper position automatically. To turn the goggles to the next position press the button 6 again and turn the goggles. To move the goggles back one has lo perform the listed above operations inversely. The device turning ON and OFF procedures is listed in  this guide.

 

Warning!

The helmet optical filter can be turned down only when the mounting bracket (3) is turned up!

 

TROUBLESHOOTING

If your Night Vision Goggles are not performing properly, use the following troubleshooting cart for quick solution to common problems.

Problem.. Possible cause . . . Remedy...
No picture Low batteries 

Is power switch on?

Replace batteries. 

Turn on power.

Dark picture Low batteries 

Low natural luminance

Replace batteries.

Switch on IR searchlight

 

If the problem persists, call the dealer where you purchased the Night Vision Goggles.

MANUFACTURER'S WARRATY

What the warranty covers:

The manufacturer warrants its products to be free from defects in material and workmanship during the warranty period. If the product proves to de defective in material or workmanship during the warranty period, the manufacturer will at its sole option repair or replace the product with a like product. 

How long the warranty is effective:

The D203M is warranted for twelve (12) months for all parts and twelve (12) months for all labor from the date of the first consumer purchase. 

Who the warranty protects:

The warranty is valid only for the first consumer purchaser.

Warranty does not cover:

a.    Any product, on which the serial number has been defaced, modified or removed,

b.   Damage, deterioration or malfunction resulting from:

c.    Accident, misuse, neglect, fire, water, lighting or other acts of nature, unauthorized product modification, or failure to follow instructions supplied with the product.

d.    Repair or attempted repair by anyone not authorized by the manufacturer.

e.     Use of supplies or parts not meeting manufacturer's specifications,

f.      Normal wears or tears,

g.     Any other cases which docs not relate to the product defect.

 

Contact us: sales@nightvisionoptic.com