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Operation Manual
NIGHT VISION ATTACHMENT
NVS-33
105 Sparks Ave., Toronto, ON M2H 2S5, Canada
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IMPORTANT INFORMATION Read prior to activation. You have purchased a sophisticated electronic device. To operate it properly, please read this manual fully. Ignoring operation procedures described in this manual will void your warranty. Disassemble the unit. Device contains a NEVER source of high voltage, which may be hazardous to your health! NEVER Aim active unit towards intense light sources (i.e. lights, headlamps, campfires, the Sun, the Moon, etc.) Reverse the polar
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TABLE OF CONTENTS 1.1. Overview..................................................................4 1.2. Key features of NVS-33...........................................5 2. DESIGN of NVS-33 ................................................6 3. SPECIFICATIONS..................................................8 4. DELIVERY SET....................................................10 5. INSTALLATION ON A RIFLE............................12 5.1. Installation with thread usage .............
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1. BRIEF DESCRIPTION 1.1. Overview NVS-33 is an afocal night vision attachment to a daytime weapon scope designed for precise aiming in darkness. The device is equipped with a high-quality generation 3 electro-optical image intensifier tube that amplifies light in the visible and IR spectrum providing for up to a 400- 700 m effective observation range at low light. Observation range depends on the characteristics of the daytime scope NVS-33 is attached to and actual observation con
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1.2. Key features of NVS-33 Installation of NVS-33 in front of a day scope on a weapon does not affect the latter’s zeroing and scope’s tactical parameters Exit pupil fits a broad range of daytime scopes Accurate internal focus adjustment mechanism High quality image within the entire field of view Withstands large calibre recoil Optionally supplied with MIL-STD-1913 Weaver / Picatinny mount Mounting adapters fit a vast majority of the daytime riflescopes. Up to 1 me
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2. DESIGN of NVS-33 1 2 3 4 5 6 7 8 9 10 11 12 Fig.1 Configuration 1 1 – Ocular with light 7 – Objective focus suppressor adjustment knob 2 – Adapter ring with 8 – Objective lens cover thread 3 – Fixating ring 9 – Battery compartment cover 4 – Retention pin 10 – Battery compartment 5 – On/Off switch 11 – Remote switch connector 6 – Device body 12 – Objective lens ________________________________
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1 2 3 4 5 6 7 8 9 10 11 12 13 Fig .2 Configuration 2 (Special order with IR Illuminator) 1 – Ocular 8 – IR illuminator 2 – Adapter ring with 9 – Objective lens cover thread 3 – Fixating ring 10 – Battery compartment cap 4 – Retention pin 11 – Battery compartment 5 – On/Off and IR switch 12 – Remote switch connector 6 – Device body 13 – Objective lens 7 – Objective focus adjustment knob _____
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3. SPECIFICATIONS Optical Magnification, x 1 Field of view, degrees 8.8 Daytime scope magnification, x 1-20 Acceptable 3-12 Recommended Focus length, mm 78 F-number 1.5 Focus range 10 m to infinity Image intensifier tube N3XT3631IC Type Gen. 3 18mm MCP Gain, min 35,000 Resolution, lp/mm 57 Infrared illuminator (optional) Type IR diode Power, mW 75 Illumination angle, degree 5-20 _______________________
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Illumination wavelength, nm 805 Electrical parameters Power supply 1 CR123 or 1 AA battery Voltage, V 3 Continuous work time, h, min 60 Mechanical characteristics Dimensions, mm 180 x 75 x 60 Weight, g 615 Environmental conditions Operating temperature range -50ºC to +55ºC Relative humidity Up to 98% Waterproof rating IP67 NOTE: As the design is being continuously improved some parameters may differ from those given above. __________________________________________
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4. DELIVERY SET - NVS 33 1 pc. - Objective lens cap 1 pc. - Remote control switch 1 pc. - Operator’s manual 1 pc. - Ocular protective cap 1 pc. - Soft case 1 pc. - CR123 Battery 1 pc. - Additional battery cap for AA battery 1 pc. - Cleaning cloth 1 pc. - Quick release Picatinny mount 1 pc. - Light suppressor 1 pc. - Riflescope mounting adapter 1 pc. NC540.50 __________________________________________ 10
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Optional accessories: - Hard case 1 pc. - Riflescope mounting adapter 1 pc. of NC540.56, NC540.42 each - Threaded adapters M48, M52, M54, 1 pc. of M55 each - M540 converter to convert NVS33 1 pc. of into 2x monocular each - IR illuminator (mounted on the 1 pc. sight) (Configuration 2) Exact delivery set depends on particular order. __________________________________________ 11
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5. INSTALLATION ON A RIFLE 5.1. Installation with thread usage Your NVS-33 matches to the inner thread M52x0.75 of the objective lens of those daytime riflescopes that can accept daytime filters. If your scope does not match this thread, use mechanical adapters that transform M52 into M54, M55 or M48 threads. M52 adapter is used to increase the depth of the thread in case if the scope objective lens is close to the edge of the scope. Mount your night vision attachment as follows: If
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The night vision attachment NVS-33 is ready for use. NVS-33 can be screwed directly into the Newcon 3- 12x50 riflescope. Its design allows such mounting without any additional adapters. To attach NVS-33 in front of NC 3-12x50, proceed as described above without using threaded adapters. Due to different designs of the daytime riflescopes we cannot guarantee that threaded connection is supported in all cases. This design may be not strong enough to hold the night vision attachment duri
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5.2. Installation with a riflescope mounting adapter NC540 Three adapter modifications are available for the NVS-33 night vision attachment to install it in front of daytime riflescopes of different models: Adapter Diameter of the Plastic inserts objective lens of the set (quantity x daytime riflescope thickness) NC540.56 56 mm 1pc. х1mm, 2pc. х2mm NC540.50 50mm 1pc. х1mm, 1pc. х2 mm NC540.42 42 mm 1pc. х1mm, 1pc. х2 mm __________________________________________ 14
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1 4 5 6 7 3 2 Fig. 3 1. NVS-33 night vision attachment 2. Adapter ring 3. Fixing ring with the pin 4. NC540.50 (NC540.56, NC540.42) adapter 5. Adapter screw 6. Plastic inserts 7. Objective lens of a daytime riflescope __________________________________________ 15
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Assemble the adapter and mount the night sight attachment as follows (Fig. 3): 1. It’s necessary to select needed quantity of the plastic inserts (6) for a particular external diameter of the objective lens of the daytime riflescope. The objective lens of the daytime riflescope (7) should fit loose, but without apparent drift into the adapter (4) with the installed inserts (6) and loosen adapter screw (5). 2. After the inserts (6) are installed, the adapter (4) must be screwed on th
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The lens of the daytime scope must be positioned at least 15 mm behind the front edge of the scope body. This excludes mechanical contact of the NVS-33 night sight attachment and daytime scope objective lens. Last digits in the NC540 adapters part numbers correlate with the diameter of the daytime riflescope. For example, to use NVS33 with Swarovski Z6i 2-12x50 scope, you should take the adapter NC540.50. During shooting with the night vision riflescope attachment NVS-33, which is a
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5.3. Installation on a Picatinny rail The night vision attachment NVS-33 can be installed on a Picatinny rail in front of the daytime riflescope. For this purpose, it has an additional Picatinny rail on the side. Night sight Picatinny rail Fig. 4 The rail adapter is designed to make the night vision attachment profile as low as possible to work together with low-profile scopes. __________________________________________ 18
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Quick release Night sight rail Fig. 5 rifle rail clamp clamp with screw Actual height of the adapter must be determined at the moment of ordering of the Picatinny rail adapter. Each rifle and riflescope combination is unique, and it is necessary to know height of the line of sight above the Picatinny mount to produce this part precisely. __________________________________________ 19
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Distance between NVS-33 line of sight and daytime riflescope line of sight must not exceed 2 mm. In case of two different rails are used, the angle deviation between two rails must not exceed 2 degrees. Picatinny rail adapter is attached to the scope permanently by means of a small clamp and screw. The other side of the adapter is equipped with quick release clamp, which can be adjusted for width and pressing exertion. It allows almost immediate installation and de-installation of the
