Newcon Optik NVS 7-3XT User manual

Operation Manual
NVS 7 Series
NIGHT VISION BINOCULARS/GOGGLES
NVS 7-3XT, NVS 7-3AG, NVS 7-3AGBW, NVS 7-3/4xXT, NVS 7-3/5xXT, NVS 7-3/8xXT
NSN: 5855-20-000-8284
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 carefully.
Ignoring the operation procedures described in this manual
will void your warranty.
NEVER disassemble the Unit. This device contains a source
of high voltage, which may be hazardous to your health.
NEVER open the objective lens of an active Unit in bright
light, including daylight. In the daytime the objective lens
must be covered by the lens cap provided. The tiny hole in
the cap provides enough light for daytime testing.
NEVER aim an active Unit at intense light sources, such as
lights, headlamps, campfires, the moon, etc.
NEVER reverse the polarity of a battery.
NEVER connect the Unit to any external power supplies.
ALWAYS remove battery when not in use for extended
period.
ALWAYS keep the objective lenses covered when not in use.
ALWAYS store the device in a warm dry place.

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Precautions
All NVS 7 series devices are sophisticated precise electro-optical
instruments. It should be handled with due care:
Each Unit contains fragile components. Avoid hard impacts,
dust, moisture and abrupt changes of temperature.
Do not touch the optical surfaces other than for cleaning with
an appropriate lens cleaning kit. Doing so may damage the
anti-reflective coating.
Clean optical surfaces with professional lens cleaning
supplies.
Use only a soft clean cloth to clean the exterior of the device.
Keep the device away from sources of heat, such as heating
appliances, sunlight or central heating.
Switch off the Unit and remove the battery during extended
periods of non-operation.
Do not apply excessive force or pressure to the lens assembly,
movable parts or threaded connections.
Small dark and/or light spots may be seen in the field of view
due to considerable optical magnification of the eyepiece.
This does not affect the operational capabilities of the device.

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CONTENTS
NVS 7 Series Models
1.OVERVIEW .............................................................. 3
2.DELIVERY SET........................................................ 5
Standard delivery set........................................................ 5
Optional accessories ........................................................ 5
3.SPECIFICATIONS.................................................... 6
4.UNIT DESIGN .......................................................... 8
5.OPERATION INSTRUCTIONS ............................... 9
Installing battery .............................................................. 9
Activating the Unit .......................................................... 9
Switching the Unit off ................................................... 10
Operating at night .......................................................... 10
Focusing the Unit........................................................... 11
Using Unit with headgear .............................................. 11
Interpupillary distance ................................................... 11
Installation of interchangeable lenses ............................ 11
Auto shut OFF in flip up position (AUTO switch
position)......................................................................... 12
Auto shut OFF at bright light......................................... 13
Auto-gating system........................................................ 13
Integrated protection circuits ......................................... 14
Using NVS H mount (helmet mount) ............................ 16

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Defogging options ......................................................... 17
6.TROUBLESHOOTING........................................... 19
No green (or black and white) image visible ................. 19
Image is unclear............................................................. 19
Image flashes ................................................................. 19
Condensation accumulates on Unit................................ 19
Visibility decreased or disappeared ............................... 19
7.WARRANTY........................................................... 20
8.CUSTOMER SUPPORT ......................................... 21
9.ACCEPTANCE CERTIFICATE ............................. 22

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1. OVERVIEW
Your NVS 7 series device (the “Unit”) is an optoelectronic
goggle intended for observation of objects and orientation at
night or under dark conditions. The Unit is equipped with an
advanced Generation 3 (“Gen 3”) image intensifier tube (“IIT”),
which amplifies low light, such as moonlight, starlight or man-
made light and converts it into a clear visible image.
3x, 4x, 5x and 8x add-on lenses can be attached to the Unit to
increase system magnification for use as binoculars.
In its 1x configuration, the Unit can be mounted on a combat
helmet or head harness.
Some typical activities where NVS 7 series devices can be
useful:
Law enforcement
Wildlife observation
Security
Search and rescue
Hunting (where permitted by law)
Features
Built-in infrared illuminator allows observation in total
darkness (i.e. cave or dark room);
Helmet mount (optional) allows for effective combat
operations;
Flip-up mechanism allows for unobstructed vision when
the Unit is mounted on headgear or helmet;

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Waterproof design (standard 1 meter immersion for 30
minutes, other waterproofing options available);
Soft rubber eyecup makes viewing comfortable.
Please read all the instructions carefully prior to using the Unit.
Manufacturer reserves the right to introduce minor design
changes without notice.
NVS 7 Series Models
Model Brief Description
NVS 7-3XT Military specification night vision goggles with 1x magnification, Gen 3 IIT,
helmet/head mountable, green image.
NVS 7-3AG Military specification night vision goggles with 1x magnification, Gen 3 IIT, auto-
gated power supply helmet/head mountable, green image.
NVS 7-3AGBW Military specification night vision goggles with 1x magnification, Gen 3 IIT, auto-
gated power supply helmet/head mountable, black and white image.
NVS 7-3/4xXT Military specification night vision binoculars with 4x magnification, Gen 3 IIT,
green image (available in AG and AGBW variants).
NVS 7-3/5xXT Military specification night vision binoculars with 5x magnification, Gen 3 IIT,
green image (available in AG and AGBW variants).
NVS 7-3/8xXT Military specification night vision binoculars with 8x magnification, Gen 3 IIT,
green image (available in AG and AGBW variants).

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2. DELIVERY SET
Standard delivery set
QUANTITY
In goggle configuration1:
NVS 7 Unit with 1x lens and headgear
1
In binocular configuration2:
NVS 7 Unit with 4x, 5x or 8x lens
1
Objective lens cap 1
Neck/shoulder strap 1
Soft carrying case 1
Operation manual 1
AA batteries 2
Optional accessories
3x Afocal Lens
Lens Cleaning Kit
Demist Shield/Sacrificial Window
Hard case
NVS H Mount (helmet mount)
NVS Coupler
Exact Delivery Set is subject to specific contract terms.
1NVS 7-3XT, NVS 7-3AG, NVS 7-3AGBW
2NVS 7-3/4xXT, NVS 7-3/5xXT, NVS 7-3/8xXT

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3. SPECIFICATIONS
Model 3XT 3AG 3AGBW
IIT Generation Gen 3
Photocathode Material Gallium Arsenide (GaAs)
Image Colour Green Black & White
Photocathode Diameter 17.5mm
Minimum Photocathode
Sensitivity
1800 µA/lm3
190 mA/W4
Luminous Gain 40,000 – 70,000 fL/fc5
10,000 – 20,000 fL/fc6
Auto-gating X
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Minimum Resolution764 lp/mm
Minimum Signal to Noise824
Bright Source Protection 
Automatic Brightness Control 
Apparent Field of View 40º
Eye Relief 25 mm
1x Objective Focal Length / F
Number 27.5 mm / F1.2
4x , 8x Objective Focal Length,
mm / F Number 100 / F1.5, 216.4 / F2.0
Interpupillary Distance 57-73 mm
Focus Range (1x) 0.25 m to infinity
Dioptric Correction ±5
Battery Type 2x AA
3@2856°K
4@830nm
5@2x10-6 fc
6@2x10-4 fc
7,8Higher minimum available as per contract