Night Vision Goggles OperatiON aNd MaiNteNaNce MaNual

N-7
Night Vision Goggles
Operation and
Maintenance Manual
Important Export Restrictions! Commodities, products, technologies and services of this manual are controlled by the U.S. Department of State Office of Defense Trade Controls, in accordance
with International Traffic in Arms (ITAR), Title 22, Code of Federal
Regulations Part 120-130 and/ or by the Export Administration
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when a license or a written approval of the U.S. Government is
applicable to it, it is illegal and strictly forbidden to export, intend to export, transfer in any other manner whatsoever, sell any
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until the valid license or written approval has been issued by the
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as identified on lists maintained by the U.S. Department of State,
the U.S. Department of Commerce, and the U.S. Department of
Treasury. It is the responsibility of the Customer to be aware of
these lists. The sale, transfer, transportation, or shipment outside of the U.S. of any product prohibited or restricted for export
without complying with U.S. export control laws and regulations,
including proper export licensing, documentation or authorization, is unlawful and may result in civil and/ or criminal penalties
and/ or constitute a federal crime. Diversion contrary to U.S. law
is strictly prohibited.
SAFETY SUMMARY
Before operating this product, you must carefully read and study this Operation and Maintenance
Manual.
The N-7 is a precision electron-optical instrument, and requires careful handling. To avoid damage to
the equipment or physical harm to the user when operating the N-7, follow all WARNINGS, CAUTIONS
and NOTES.
Below you will find definitions of the following alerts that appear throughout this Manual:
WARNING — Identifies a clear danger to the person operating the equipment.
CAUTION – Identifies risk of damage to the equipment.
NOTE – Serves to highlight essential procedures, conditions, and statements, or convey important instructional data to the user.
The information provided in this manual is for familiarization purposes only. The contents may undergo further
changes with no commitment by Armasight© to notify customers of any updates.
Armasight© assumes no responsibility for any misprints or other errors that this manual may contain.
©2012 by Armasight. All rights reserved.
2
WARNINGS:
• This product contains natural rubber latex which may cause allergic reactions! The FDA
has reported an increase in the number of deaths that are associated with an apparent sensitivity to natural latex proteins. If you are allergic to latex, it is a good idea to learn which products
contain it and strictly avoid exposure to those products.
• The light from the unit infrared (IR) illuminator is invisible to the unaided eye when used in
total darkness. However, the light can be detected by other Night Vision Devices (NVD).
• To reduce the risk of detection by another NVD, avoid prolonged activation of the IR illuminator.
• The IR light is more detectable by an NVD when used in smoke, fog and rain. Avoid prolonged
activation of the unit IR illuminator in these conditions.
• The intensifier’s phosphor screen contains toxic materials. Please note the following:
— If the intensifier tube breaks, be extremely careful to avoid inhaling the phosphor screen
material. DO NOT allow the material to come in contact with your mouth, eyes, or any open
wounds on the skin.
— If the phosphor screen material comes in contact with your skin, wash it off immediately
with soap and water.
— If you inhale or swallow any phosphor screen material, drink a lot of water, induce vomiting, and seek medical attention as soon as possible.
CAUTION:
• The N-7 is a precision electron-optical instrument, and must be handled carefully at all times
to prevent damage to the device and danger to the user.
• To protect the intensifier tube, do not remove the lens cap of the N-7 when the unit is being
operated in daylight conditions, or when the device is not in use.
• Use of the N-7 in brightly lit conditions may damage the unit’s intensifier tube.
• Bright light sources such as firelight, headlights, searchlights, etc. can damage the N-7. Avoid
exposing the unit to these types of light sources.
• DO NOT attempt to force the controls past their stopping points, as this may cause damage
to the mechanisms.
• Before replacing the intensifier tube, confirm that it is no longer covered by warranty.
• Thoroughly clean and dry each component of the N-7 before placing them in the storage
case.
NOTES:
• The equipment requires some ambient light (moonlight, starlight, etc.) to operate.
• Performance of the device in nighttime conditions depends on the level of ambient light in
the environment. Please remember the following:
— The level of ambient light is reduced by the presence of clouds, shade, or objects that
block natural light (trees, buildings, etc.).
— The equipment is less effective when operated in shadows and other darkened areas.
— The equipment is less effective when operated in rain, fog, sleet, snow, dust or smoke.
— The equipment will not “see” through dense smoke.
• The IR illuminator is intended for increased illumination, as needed, when viewing at a close
distance of up to 3m.
• For the purpose of returning defective components, retain all packaging materials.
3
LIST OF CONTENTS
TITLE
Safety Summary
List of Contents
List of Figures
List of Tables
How to Use This Manual
PAGE
2
4
5
6
6
1. INTRODUCTION
1.1 General Information
1.1.1 Type of Manual
1.1.2 Model Number and Equipment Name
1.1.3 Purpose of Equipment
1.1.4 Reporting Equipment Improvement Recommendations
1.2 Warranty Information and Registration
1.2.1 Warranty Information
1.2.2 Limitation of Liability
1.2.3 Product Warranty Registration
1.2.4 Obtaining Warranty Service
1.3 List of Abbreviations
7
7
7
7
7
7
8
8
8
8
9
10
2. DESCRIPTION AND DATA
2.1 System Description
2.2 Specifications
2.3 Standard Components
2.4 Optional Equipment
2.5 Key Features
11
11
12
14
14
16
3. OPERATING INSTRUCTIONS
3.1. Installation and Mounting
3.1.1 Battery Installation 3.1.2 Mounting the N-7 to a Goggle Kit
3.1.3 Mounting the N-7 to a Helmet
3.1.4 Mounting Accessory Lenses to the N-7
3.1.5 Mounting an IR Illuminator to the N-7
3.2 Controls and Indicators
3.3 Operating Procedures
3.3.1 Operating Procedures
3.3.2 IR Illuminator Operations
3.3.3 N-7 Shut-Down
3.4 Storage 17
17
17
18
19
19
20
21
22
22
22
22
23
4. PREVENTIVE MAINTENANCE AND TROUBLESHOOTING
4.1 Preventive Maintenance Checks and Services (PMCS)
4.2 Troubleshooting
4.3 Identification of Operational Defects
4.3.1 Operational Defects
4.3.2 Cosmetic Blemishes
24
24
25
29
29
30
4
4.4 Maintenance
4.4.1 General
4.4.2 Cleaning Procedures
4.4.3 Battery Removal and Replacement
4.4.4 Goggle Kit Maintenance
4.5 Service/ Packing and Unpacking
32
32
32
32
32
34
APPENDIX
A. N-7 List of Spare Parts
B. Product Warranty Registration Card
Alphabetical Index
35
35
36
35
LIST OF FigureS
FIGURE TITLE
2-1
2-2
3-1
3-2
3-3
3-4
3-5
3-6
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
A-1
N-7 Night Vision Goggles
N-7 Standard Components
Battery Installation
Mounting the N-7 to a Goggle Kit
Mounting the N-7 to a Helmet
Mounting a 5X Lens to the N-7 Mounting an IR Illuminator to the N-7
N-7 Controls
Shading
Edge Glow
Emission Points and Bright Spots
Fixed-Pattern Noise
Chicken Wire
Browpad Replacement
Chin Strap Reinstallation
Chin Cup Replacement
N-7 Spare Parts
PAGE
12
14
17
18
19
19
20
21
27
27
28
28
28
30
30
30
32
LIST OF Tables
TABLE
TITLE
2-1
2-2
2-3
2-4
2-5
2-6
2-7
N-7 System Description
Mechanical Data
Electrical Data
Optical Data
Environmental Data
IR850 Specifications
N-7 Standard Components
PAGE
12
12
13
13
14
14
14
5
2-8
3-1
4-1
4-2
A-1
N-7 Optional Equipment
N-7 Controls and Indicators
Preventive Maintenance Checks and Services
Operator Troubleshooting
N-7 List of Spare Parts
15
21
24
26
33
HOW TO USE THIS MANUAL
USAGE
You must familiarize yourself with the entire manual before operating the equipment. Before performing any kind of maintenance on your device, read the section on maintenance in its entirety. Follow all
WARNINGS, CAUTIONS, and NOTES.
MANUAL OVERVIEW
This manual contains sections on Operating and Maintaining the N-7 Night Vision Unit.
The list of Spare Parts can be found in Appendix A.
The Product Warranty Registration Card can be found in Appendix B.
6
1
INTRODUCTION
1.1 GENERAL INFORMATION
1.1.1 TYPE OF MANUAL
Operation and Maintenance (including a List of Spare Parts).
1.1.2 Model Number and Equipment Name
This Manual accompanies the N-7 Night Vision Goggles.
Throughout this manual, the N-7 will be referred to as the goggles, the device, the equipment, or the
N-7.
1.1.3 PURPOSE of Equipment
To provide the operator with the ability to observe scenes at night, under moonlight and starlight conditions.
The N-7 can be used as a handheld, head-mounted or helmet-mounted device. When mounted to the
head or a helmet, the user will be able to easily operate the device while walking, performing shortrange surveillance, reading maps, performing vehicle maintenance, or administering first aid.
1.1.4 Reporting Equipment Improvement Recommendations
Armasight encourages user recommendations for improvements to the device.
Mail your comments to:
Armasight Inc.
815 Dubuque Avenue
South San Francisco, CA 94080
USA.
Or, you can send an email to info@armasight.com.
7
1.2warranty INFORMATION and Registration
1.2.1 WARRANTY INFORMATION
This product is guaranteed to be free from manufacturing defects in material and workmanship under
normal use for a period of two (2) years from the date of purchase. In the event that a defect covered
by the below warranty occurs during the applicable period stated above, Armasight, at its discretion,
will either repair or replace the product; such action on the part of Armasight shall be the full extent of
Armasight’s liability, and the Customer’s sole and exclusive reparation. This warranty does not cover a
product if it has (a) been used in ways other than its normal and customary manner; (b) subjected to
misuse; (c) subjected to alterations, modifications or repairs by the Customer of by any party other than
Armasight without prior written consent of Armasight; (d) special order or “close-out” merchandise
or merchandise sold “as-is” by either Armasight or the Armasight dealer; or (e) merchandise that has
been discontinued by the manufacturer and either parts or replacement units are not available due to
reasons beyond the control of Armasight. Armasight shall not be responsible for any defects or damage that in Armasight’s view are a result from the mishandling, abuse, misuse, improper storage or
improper operation of the device, including use in conjunction with equipment that is electrically or
mechanically incompatible with, or of inferior quality to, the product, as well as failure to maintain the
environmental conditions specified by the manufacturer. CUSTOMER IS HEREBY NOTIFIED THAT OPERATION OF THE EQUIPMENT DURING DAYLIGHT HOURS OR UNDER ANY EXCESSIVE LIGHT CONDITIONS
MAY PERMANENTLY DAMAGE THE INTERNAL COMPONENTS OF THE UNIT AND SAID DAMAGE WILL
NOT BE COVERED UNDER THIS WARRANTY. This warranty is extended only to the original purchaser.
Any breach of this warranty shall be enforced unless the customer notifies Armasight at the address
noted below within the applicable warranty period.
The customer understands and agrees that except for the foregoing warranty, no other warranties
written or oral, statutory, expressed or implied, including any implied warranty of merchantability or
fitness for a particular purpose, shall apply to the product. All such implied warranties are hereby and
expressly disclaimed.
1.2.2 Limitation of Liability
Armasight will not be liable for any claims, actions, suits, proceedings, costs, expenses, damages or
liabilities arising out of the use of this product. Operation and use of the product are the sole responsibility of the Customer. Armasight’s sole undertaking is limited to providing the products and services
outlined herein in accordance with the terms and conditions of this Agreement. The provision of products sold and services performed by Armasight to the Customer shall not be interpreted, construed,
or regarded, either expressly or implied, as being for the benefit of or creating any obligation toward
any third party of legal entity outside Armasight and the Customer; Armasight’s obligations under this
Agreement extend solely to the Customer. Armasight’s liability hereunder for damages, regardless of
the form or action, shall not exceed the fees or other charges paid to Armasight by the customer or
customer’s dealer. Armasight shall not, in any event, be liable for special, indirect, incidental, or consequential damages, including, but not limited to, lost income, lost revenue, or lost profit, whether such
damages were foreseeable or not at the time of purchase, and whether or not such damages arise
out of a breach of warranty, a breach of agreement, negligence, strict liability or any other theory of
liability.
1.2.3 Product Warranty Registration
In order to validate the warranty on your product, Armasight must receive a completed Product Warranty Registration Card for each unit, or the Customer can complete a warranty registration on our
website, at www.armasight.com. Please complete the included form (Appendix C) and immediately
mail it to our Service Center:
Armasight Inc.
815 Dubuque Avenue
South San Francisco
CA 94080
United States of America.
8
1.2.4 Obtaining Warranty Service
To obtain warranty service on your unit, the End-user (Customer) must notify the Armasight service
department via email. Send any requests to service@armasight.com to receive a Return Merchandise
Authorization number (RMA). When returning any device, please take in the product to your retailer, or
send the product, postage paid and with a copy of your sales receipt, to Armasight Corporation’s service center at the address listed above. All merchandise must be fully insured with the correct postage;
Armasight will not be responsible for improper postage or merchandise that becomes lost or damaged
during shipment. When sending product back, please clearly write the RMA# on the outside of the
shipping box. Please include a letter that indicates your RMA#, the Customer’s Name, a Return Address,
reason for the return, Contact information (valid telephone numbers and/ or an e-mail address), and
proof of purchase that will help us to establish the valid start date of the warranty. Product merchandise returns that do not have an RMA# listed may be refused, or a significant delay in processing may
occur. Estimated Warranty service time is 10-20 business days. The End-user/ Customer is responsible
for postage to Armasight for warranty service. Armasight will cover return postage/ shipping after warranty repair to the End-user/ Customer only if the product is covered by the aforementioned warranty.
Armasight will return the product after warranty service by domestic UPS Ground service and/ or domestic mail. Should any other requested, required or international shipping methods be necessary, the
postage/ shipping fee will be the responsibility of the End-user/ Customer.
9
1.4 List of Abbreviations
C
CCW
Cont’d
CW
Dia
F
FOV
g
Gen
H
hr
IR
IT
L
LED
lx
m
mA
min
mm
mW
nm
No
NV
NVD
Para
PMCS
QRM
QTY
RMA#
s
seq
SR
VDC
V
W
10
Celsius (Centigrade)
counterclockwise
Continued
clockwise
diameter
Fahrenheit
Field of View
gram
Generation
Height
hour
infrared
Intensifier Tube
Length
Light Emitting Diode
lux
meter
milliampere
minute
millimeter
milliwatt
nanometer
Number
Night Vision
Night Vision Device
Paragraph
Preventive Maintenance Checks and Services
Quick Release Mount
Quantity
Return Merchandise Authorization number
second
sequence
Service Representative
Volts Direct Current
Volt
Width
2
DESCRIPTION AND DATA
2.1 System DESCRIPTION
The N-7 is a hand-held, head-mounted or helmet-mounted night vision system that allows the user
to operate it while walking, conducting short-range surveillance, reading maps, conducting vehicle
maintenance, or administering first aid in both moonlight and starlight conditions.
The N-7 utilizes the principle of intensification of the residual light that is reflected from the surrounding objects. The optical system of the unit consists of an objective lens, an intensifier tube (IT), and two
eyepieces.
The N-7 automatic brightness adjustment system retains the same gain (image brightness), even under
unsteady light conditions.
A built-in IR illuminator makes it possible to use the unit in low light or total darkness.
The N-7 uses LED lights to indicate illumination level, low battery, and to show the user that the IR illuminator is on.
The N-7 allows for vertical and fore-and-aft adjustment when mounted to the user’s head or helmet,
when focusing the lens, and when focusing the eyepiece.
NOTE:
The equipment requires some light (moonlight, starlight, etc.) to operate. Performance of the
device depends upon the level of ambient light in the environment. Please remember the following:
— The level of ambient light in the environment is reduced by the presence of clouds, shade,
or objects that block natural light (trees, buildings, etc.).
— The equipment is less effective when operated in shadows and other darkened areas.
— The equipment is less effective when operated in rain, fog, sleet, snow, or smoke.
— Under starlight conditions, particularly in low-contrast environments such as snow-covered territory, sandy deserts, large bodies of water or grassy hills, the visibility may degrade,
thereby disguising or masking changes in terrain.
— The equipment will not “see” through dense smoke.
11
1
10
7
9
8
6
5
11
3
2
12
4
Figure 2-1. N-7 night vision goggles
Table 2-1. N-7 System Description
Item
Description
Item
Description
1
Operating Button
7
Rail
2
IR Illuminator
8
Eyepiece Ring
3
Body
9
Eyepiece
4
Lens Cap
10
Eye-cup
5
Focus Ring
11
Battery Cap
6
Lens
12
Battery Adapter
2.2 Specifications
Table 2-2. Mechanical Data
Equipment Item
N-7 Night Vision Goggles
Dimensions, mm (L x W x H)/(Dia x L)
160x102x70
Weight, g
480
Goggle Kit
280х180х80
295
Flip-up Helmet Mount*
120х170х150
280
3X Afocal Lens*
Dia 77х95
550
5X Lens*
Dia 80х141
500
8X Lens*
Dia 96х211
730
IR850*
117×41×37
102
* Optional.
12
Table 2-3. Electrical Data
ITEM
DATA
Battery
One 123A (3V) or one AA (1.5V)
Consumption Current*:
38mA (123A) / 75 (AA)
Continuous Operation* at 20 °C:
— 123A Battery
— AA Alkaline Battery
up to 60
up to 50
* With IR illuminator off.
Table 2-4. Optical Data
ITEM
DATA
Magnification:
— with 1X Lens
— with 3X Afocal Lens*
— with 5X Lens*
— with 8X Lens*
(1±0.5) X
(3±0.15) X
(5±0.2) X
(8±0.5) X
1X Lens:
— Focal Length
— Lens F/number
24mm
1:1.2
Focus Range:
— with 1X Lens
— with 3X Afocal Lens*
— with 5X Lens*
— with 8X Lens*
0.25m to infinity
5m to infinity
10m to infinity
15m to infinity
FOV:
— with 1X Lens
— with 3X Afocal Lens*
— with 5X Lens*
— with 8X Lens*
40°
9°
9°30’
6°30’
Exit Pupil Diameter
14mm
Eye Relief
16mm
Eyepiece Diopter Adjustment
-5 to +5 diopters
Interpupillary Distance
58 - 72 mm
Built-in IR Illuminator
— Power
— Illumination Range
— Focus Distance
— Illumination Wavelength
50mW
20m
3m
850nm
* Optional.
13
Table 2-5. Environmental Data
ITEM
DATA
Operating Temperature
-40 to +50 °C
Storage Temperature
-50 to +70 °C
Humidity
95%, 25°C to 40°C for 48 hr
Illumination Required
Natural night illumination
(overcast starlight to moonlight)
Environmental Rating
Waterproof
Table 2-6. IR850 specifications
ITEM
DATA
IR Emitter Type
LED
Peak Wavelength
850 nm
Power
500 mW
Illumination Range
Up to 500 m
Divergence
8° to 12°
Battery
Single CR123А (3V)
Operational Time at 20 °C (68 °F)
From 1.5 hr (Full Power) to 10 hr (1/4 Power)
Overall Dimensions with Mount
117×41×37mm (4.6×1.6×1.7 in)
Weight (with Mount, without Battery)
102 g (3.6 oz)
Operating Temperature
-30 to +50°С (-22 to 122°F)
Storage Temperature
-50 to +70°С (-58 to 158°F)
Environmental Rating
Water Resistant
2.3 STANDARD COMPONENTS
N-7 standard components are listed in Table 2-7 and shown in Figure 2-2.
3
4
1
2
5
6
Figure 2-2. N-7 standard components
14
7
Table 2-7. N-7 standard components
DESCRIPTION
ITEM
QUANTITY
1
Armasight N-7 Night Vision Goggles
Night vision goggles with unity magnification.
2
Objective Lens Cap
A cap used to protect the lens and to be used when testing the unit in daylight.
1
3
Eyecup
The rubber cups used to protect the eyepieces as well as provide comfort for the
operator.
2
4
CR123A Lithium Battery
A single, 123A lithium battery used to power the unit.
1
5
Goggle Kit
Adjustable universal assembly that secures the N-7 to the operator’s head, providing hands-free operation.
1
6
Soft Carrying Case
A protective case used for storing and carrying of the N-7 and its accessories.
1
7
Operation and Maintenance Manual
Provides safety information, equipment description, mounting procedures, operating instructions, and preventive maintenance checks and services (including a
List of Spare Parts).
1
1
2.4 Optional Equipment
N-7 optional equipment is listed in Table 2-8.
Table 2-8. N-7 OPTIONAL equipment
image
DESCRIPTION
3X Afocal Lens
Quickly converts the N-7 into a long-range night
vision device. Ideal for long range observation.
ANAF3X0002
5X Lens
Quickly converts the N-7 into a long-range night
vision device. Ideal for long range observation.
ANLE5X0003
8X Lens
Quickly converts the N-7 into a long-range night
vision device. Ideal for long range observation.
ANLE8X0005
Helmet Mount #125
Helps to mount the goggles to a range of ballistic
helmets.
ANHM000125
15
table 2-8. continued
IR850 Detachable Long Range Infrared
illuminator
An IR illuminator can provide an extra source of
infrared light greatly enhancing the performance of
night vision devices.
ANKI000036
Hard Shipping/Storage Case
A protective case used for the shipping/ storage of
the N-7 and its accessories.
ANHC000001
2.5 Key Features
––
––
––
––
––
––
––
––
––
16
High Quality Image intensifier tube
Super fast lens system provides the user with a clear, sharp image
Dual eye viewing system for long viewing sessions
Automatic bright light cut-off system to protect the intensifier tube
LED lights visible in the eyepiece viewing area that indicate operation of the bright light cutoff system and IR illuminator, as well as to alert the user of a low battery
Built-in IR illuminator
Lightweight
Compact and robust design
Easy to operate
Serviceability under severe conditions
High-performance
Highly reliable
Powered by single CR123A or AA battery
Head or helmet-mountable for hands-free usage
Automatic ON/ OFF feature with flip-up head/ helmet mount
Interchangeable lenses for different magnification
Waterproof
Limited two-year warranty
3
OPERATING INSTRUCTIONS
3.1 Installation and Mounting
CAUTION:
To protect the intensifier tube when the sight is not in use or when it is being operated in daylight, keep the protective lens cap securely fitted over the lens.
3.1.1 Battery Installation
The N-7 operates on a single CR123A or AA battery.
Depending on the size of the battery used, it may be necessary to reposition the battery adapter
within the battery cap.
NOTE:
If operating the device at temperatures below -20°C (-4°F), the use of an alkaline battery is not
recommended, as the severe cold will adversely affect the life of the battery. In these conditions,
it is recommended that you use a lithium-iron disulfide 1.5V AA battery, or its equivalent.
Install the CR123A battery as follows:
1. Unscrew the battery cap (A) and insert the CR123A battery (B), observing the polarity markings on
the body of the device.
2. With the battery adapter (C) installed, screw the battery cap (A) back on securely.
B
C
D
A
C
A
Figure 3-1. battery installation
17
3.1.2 MOUNTING THE N-7 TO A GOGGLE KIT
Mount the N-7 to the optional goggle kit as follows:
1. Put on the goggle kit. Adjust the goggle kit strap pads until the goggles fit securely around your
head. Remove the goggle kit.
2. Loosen the screw (A). While pushing down on the button (B), insert the N-7 rail into the guide (C) of
the goggle kit bracket. Tighten the screw (A).
3. Put on the goggle kit, now mounted with the N-7.
4. To adjust the equipment for greater comfort, loosen the screw (A) and move the unit along the guide (C).
5. The goggle kit has a flip-up mechanism. Push the button (D) of the goggle kit bracket and lift the unit
up until it reaches its topmost position.
6. Push the same button (D) to lower the unit into the correct viewing position.
7. To remove the N-7 from the goggle kit, loosen the screw (A), push the button (B), and slide the unit
out of the bracket guide (C).
D
B
A
C
Figure 3-2. Mounting N-7 to A Goggle Kit
3.1.3 MOUNTING THE N-7 TO A HELMET
An optional flip-up helmet mount can be used to attach the N-7 to a helmet. The helmet mount fits
the N-7 securely onto the helmet via a rugged strapping device and grooved hooks. With the helmet
mount, the N-7 can be positioned directly in front of the user’s eyes, or flipped backwards, out of the
field of view.
Mount the N-7 to a helmet as follows:
1. Attach the mount to the helmet as shown in Figure 3-3.
2. Adjust and tighten the straps (A).
3. Loosen the screw (B). With the button (C) pushed down, insert the N-7 rail into the guide (D) of the
helmet mount bracket. Tighten the screw (B).
4. Put on the helmet with the N-7 attached.
5. To adjust the unit for comfort, loosen the screw (B) and move the unit along the guide (D).
7. Loosen the screw (E) and move the unit along vertical slide-rail (F) until the most comfortable vertical
position is reached.
8. To remove the N-7 and turn it around, push the button (G) and lift the unit up until it reaches the
topmost position.
18
9. Push the same button (G) to lower the N-7 into the proper viewing position.
10. To remove the N-7 from the helmet mount, loosen the screw (B), push down on the button (C), and
slide the unit out of the guide (D).
11. To remove the flip-up mechanism from the helmet mount, loosen the screw (E) and slide the flip-up
mechanism out of the vertical rail.
A
F
E
G
C
B
D
Figure 3-3. MOUNTING THE N-7 TO A HELMET
3.1.4 MOUNTING accessory LENSes TO THE N-7
To mount the 3X afocal lens to the device, screw it into the threading of the standard 1X objective lens
on the N-7.
To mount the 5X or 8X lens, unscrew the existing 1X objective lens of the N-7 and screw in the 5X or 8X
lens in its place.
The N-7 configured with an 8X lens can be installed on a tripod. To mount the unit on a tripod, use the
1/4’’ threaded socket (E) on the housing of the 8X lens.
Figure 3-4. MountING a 5x LENS TO the N-7
NOTE:
The unit may be badly damaged if the tripod collapses or overturns. Remove the unit from the
tripod if it is not within your reach.
19
3.1.5 MOUNTING AN IR ILLUMINATOR TO THE N-7
To mount an IR illuminator to the N-7 perform the following steps:
1. Loosen the IR illuminator fixing screw (A).
4. Insert the guide (B) of IR illuminator mount into the rail (C) of N-7. Tighten the fixing screw (A).
A
B
C
Figure 3-5. MountING an ir illuminator TO the N-7
20
3.2 Controls and Indicators
The N-7 controls and indicators are defined in Table 3-1.
The N-7 controls are shown in Figure 3-6.
CAUTION:
DO NOT over-adjust the controls by forcing them past their stopping points.
B
C
A
Figure 3-6. N-7 controls
Table 3-1. N-7 Controls and Indicators
CONTROL/INDICATOR
Operating Button
(Figure 3-14, A)
FUNCTION
Controls unit power and built-in IR illuminator.
To turn unit on and off push the button by short press (less than 1.5 sec).
To turn the IR illuminator on and off push the button by long press (more
than 1.5 sec).
Eyepiece Rings
(Figure 3-14, B)
Adjusts the unit diopter. The total dioptric range is covered in a 1/2 ring
revolution.
Focusing Ring
(Figure 3-14, C)
Focuses the lens. Adjusts for sharpest view of the scene. The total focus
range is covered in a 1/3 ring revolution.
Built-in LED Indicators
A PERMANENT RED GLOW in the eyepiece viewing area indicates that the
IR illuminator is operating.
A FLASHING RED LIGHT in the eyepiece viewing area indicates that the
battery is low.
21
3.3 OPERATIng Procedures
3.3.1 Operating Procedures
These procedures should be performed under nighttime conditions only.
CAUTION:
Use of the N-7 brightly lit conditions may damage the unit’s intensifier tube.
1. Verify that the battery is installed as indicated on the unit body.
2. Make a visual estimation of the illumination level in the viewing area. The required level of illumination is less than 1 lx (late twilight sky conditions).
3. Remove the lens cap.
4. Push the operating button by short press. After a slight delay, a green glow will appear in the eyepiece of the unit.
5. Adjust the unit diopter by rotating the ring of the eyepiece.
6. Observe the scene. Rotate the focus ring until the image is clear and sharp.
NOTE:
The front lens should be readjusted as you view objects at different distances.
CAUTION:
Bright light sources such as firelight, headlights, searchlights, etc. can damage the N-7. Avoid
exposing the unit to these types of light sources.
3.3.2 IR Illuminator Operations
CAUTION:
When operating the device in extremely dark conditions, the light from the unit’s IR illuminator
will be invisible to the unaided eye. However, the light can be detected by other NVDs.
NOTE:
The IR illuminator is designed to provide additional illumination (when needed) while viewing
scenes or targets from a short distance (up to 3m).
1. To activate the IR illuminator, turn the unit on. Push the operating button by long press. A red light
will appear in the eyepiece to indicate that the IR illuminator is operating.
3.3.3 N-7 Shut-Down
1. To turn unit off push the operating button by short press. The green glow in the viewing area will
fade to black.
22
2. Secure the lens cap over the objective lens.
3. If necessary, remove the unit from the rail. Remove the unit by following the mounting instructions
in reverse.
4. Unscrew the battery cap and take out the battery. Replace the battery cap. Do not store the unit with
the battery still in it.
5. Store the unit and all accessories in the case.
3.4 Storage
Prepare the N-7 for storage as follows:
1. Verify that the N-7 and all accessories are clean and dry before returning them to the storage case.
2. Secure the cap over the objective lens.
3. Remove the battery.
4. Place the N-7 and accessories in the appropriate locations in the case, and close the cover.
23
4
PREVENTIVE MAINTENANCE AND
TROUBLESHOOTING
4.1 Preventive Maintenance Checks and Services (PMCS)
Table 4-1: Preventive Maintenance Checks and Services has been provided so that you can keep your
equipment operable and in good condition.
Perform all functional tests in the order listed in Table 4-1.
Operating Procedures are detailed in Chapter 3.
A. Cautions
Always observe any CAUTIONS that appear in the table.
B. Explanation of Table Entries
Seq No. column. Sequence numbers are for reference and appear in the order required to perform
checks and services.
Location/Item to Check/Service column. Indicates the location and the item to be checked or
serviced.
Procedure column. Details the checking/ servicing procedure.
Not Fully Mission Capable If... column. Indicates what faults will prevent your equipment from
operating successfully.
TABLE 4-1. Preventive Maintenance Checks and Services
Seq No.
Location Item to
Check/Service
PROCEDURE
Not Fully Mission
Capable If...
BEFORE OPERATION CHECKS
1
Completeness
Open the carrying case and inventory all items by comparing them with the data specified in this manual.
2
Soft Carrying Case
Shake out loose dirt or foreign material. Inspect for tears,
cuts, excess wear or damage to the mounting clips.
3
External Surfaces
Inspect for cracks or damage.
Scratches and gouges are OK if operation is not affected.
24
Items are missing.
Cracked or damaged.
table 4-1. continued
Seq No.
Location Item to
Check/Service
Not Fully Mission
Capable If...
PROCEDURE
4
Lens Cap
Inspect for cracked, torn, or missing lens caps.
Cap is torn or cut.
Cup is not secured to the housing
of the lens.
5
Eyecups
Inspect for dirt or dust. Inspect for cracked, torn, bent,
broken or improperly fitted eyecup.
If necessary, clean as per Part 4.4.2.
Cup is torn or cut.
6
Battery
Compartment/ Cap
Inspect for corrosion, moisture, corroded or defective
contacts. Verify that the o-ring is present.
Contacts are damaged or corroded,
or the o-ring is missing.
7
Lenses
Inspect optical surfaces for dirt, fingerprint residue,
scratches, chips, or cracks.
Scratches or chips hinder vision
when the N-7 is turned on. Cracks
are present.
8
Focusing Ring
Rotate the focusing ring to ensure free movement (range
is approximately 1/3 turn).
Ring gets stuck or adversely affects
the user’s ability to properly focus
the unit.
9
Eyepiece Rings
Rotate the eyepiece rings to make sure the eyepiece is not
too tight or too loose. Range is approximately ½ turn.
Ring gets stuck, is too loose, or adversely affects the user’s ability to
properly adjust the diopter.
10
Goggle Kit
Check the straps and pads for cuts tears, fraying, holes,
cracks or defective fasteners.
Check the mount of goggle kit for dirt, dust or corrosion.
Insert goggle rail into guide to verify secure attachment
of goggle to head mount. If necessary, clean the mount
with water.
Press the buttons of the mount and check for free motion.
Inspect for damage.
11
Optional Equipment
Inspect optional items for dirt, or corrosion, damage, and
missing parts. Check for proper operation.
If necessary, clean as detailed in Part 4.4.2.
Equipment is damaged or parts are
missing.
OPERATIONAL CHECKS
CAUTION:
Do not activate the N-7 in daylight unless the lens cap is on, or you are operating under dark conditions.
NOTE:
Daylight checks are described below.
12
13
Operating
Button
Viewed Image
Install the battery. Push the button by short press. Look
for the green glow in eyepieces (it should appear after a
slight delay).
Image is present.
Push the button by long press for activate the built-in IR illuminator. Look for a permanent red glow in the eyepiece
viewing area.
Permanent red glow is absent
Inspect for any operational defects (refer to Part 4.3: Identification of Operational Defects).
Shading, edge glow, flashing, flickering, and intermittent operation,
or excessive cosmetic defects are
found.
AFTER CHECKING PROCEDURES
14
Turn the unit OFF. Verify that the green glow fades from
the eyepieces.
Remove the battery.
Return the unit and all accessories to the soft carrying
case.
25
4.2 TROUBLESHOOTING
The purpose of troubleshooting is to identify the most frequently occurring equipment malfunctions,
their probable causes, and the corrective actions required to fix them.
Table 4-2 lists common malfunctions that may occur during the operation or maintenance of the N-7.
Perform the tests, inspections, and corrective actions in the order listed in the table.
This table does not list all of the malfunctions that may occur with your device, or all of the
tests and corrective actions that may be necessary. If you experience an equipment malfunction
that is not listed, or is not fixed by the corrective actions listed in the table, please contact Armasight’s
Customer Service center.
TABLE 4-2. Operator Troubleshooting
Malfunction
Unit fails to activate.
PROBABLE CAUSE/ TEST/INSPECTION
Corrective Action
Battery is dead, missing or improperly
installed.
Replace the battery or install it correctly.
Battery contact surfaces or contact
springs are dirty or corroded.
Clean the contact surfaces with a pencil eraser
and/ or alcohol and cotton swabs.
Defective image intensifier.
Please contact Customer Support.
IR illuminator fails to activate.
Turn the IR illuminator on in a dark area.
Visually estimate whether or not the observed scene is illuminated.
If the IR illuminator fails to activate, please contact
Customer Support.
LED indicators fail to activate.
Visual inspection.
Please contact Customer Support.
Poor image quality.
Check objective lens or eyepiece focus.
Refocus the lens.
Check for fogging or dirt on the lens.
Clean the lens as detailed in Part 4.4.2 of this manual. If image quality is still poor, please contact
Customer Support.
Damaged optical components.
Please contact Customer Support
Light is visible around the eyecup.
Check the exit pupil distance value.
Readjust for proper eye-relief distance.
Check the eyecup resilience.
If the eyecup is defective, please contact Customer Support.
Focusing ring cannot be moved.
Check to see if the focusing ring is bent
or broken.
If damaged, please contact Customer Support.
Eyepiece ring cannot be moved.
Check to see if the eyepiece ring is bent
or broken.
If damaged, please contact Customer Support.
4.3 Identification of Operational Defects
4.3.1 Operational defects
Operational defects relate to the reliability of the intensifier, and are an indication of instability. If identified, the user will need to return the N-7 immediately. Operational defects include shading, edge
glow, flashing, flickering, and intermittent operation.
A. Shading
If shading is persistent, you will not be able to see a fully circular image (Figure 4-1). Shading is a very
dark, high-contrast area with a distinct line of demarcation present, and you cannot see an image
through it. Shading always begins on the edge, and will eventually migrate inward until it spans across
the entire image area. If you notice shading with your device, please contact Customer Support.
26
SHADING
Figure 4-1. shading
NOTE:
Verify that any shading is not the result of improper eye-relief adjustment.
B. Edge Glow
Edge glow is a bright area (it sometimes appears to be sparkling) in the outer portion of the viewing
area (see Figure 4-2). To check for edge glow, block out all light from the device by cupping a hand over
the lens. If the image tube is displaying edge glow, the bright area will still show up; if edge glow occurs,
please contact Customer Support.
EDGE
GLOW
Figure 4-2. EDGE GLOW
C. Flashing, Flickering, or Intermittent Operation
The image may appear to flicker or flash. If there is more than a single flicker, check for a loose battery
adapter or a weak battery. If flickering continues, please contact Customer Support.
4.3.2 Cosmetic Blemishes
Cosmetic blemishes are usually the result of manufacturing imperfections. They do not affect the reliability of the image intensifier, and are not normally a cause for returning the N-7. However, some types
of cosmetic blemishes can worsen over time and interfere with the user’s ability to properly operate
the device during missions. If you believe a cosmetic blemish is cause for returning the device, record
the specific nature of the problem on the maintenance forms and use the clock method to identify the
position of the blemish and its approximate distance from the center (e.g., 5:00 toward the outside, 2:30
near the center, or 1:00 midway).
The following are examples of cosmetic blemishes:
A. Bright Spots
A bright spot is a small, non-uniform bright area that may flicker or appear constant (Figure 4-3).
Not all bright spots make the N-7 rejectable. Cup your hand over the lens to block out all light. If the
bright spot remains, please contact Customer Support.
Bright spots usually go away when all light is blocked out. Verify that any bright spots are not simply the
result of bright light in the area you are observing. Bright spots are acceptable if they do not interfere
with the user’s ability to view the scene or perform missions. 27
B. Emission points
Emission points are steady or fluctuating pinpoints of bright light in the image area that do not go away
when all external light is blocked from the objective lens (Figure 4-3). The position of an emission point
within the image area does not move. Not all emission points are cause to return the N-7. Verify that
emission points are not simply light sources present in the scene you are observing. Emission points are
acceptable if they do not interfere with the user’s ability to perform missions.
EMISSION
POINT
BRIGHT
SPOT
Figure 4-3. EMISSION POINTS AND BRIGHT SPOTS
C. Black Spots
Black spots are cosmetic blemishes in the image intensifier or debris between the lenses. Black spots are
acceptable as long as they do not interfere with the user’s ability to observe the scene. No action is required
if this condition is present, unless the spots interfere with the operator’s ability to perform missions.
D. Fixed-pattern Noise
Fixed-pattern noise is usually a cosmetic blemish characterized by a faint hexagonal (honeycomb) pattern that appears throughout the viewing area. This typically occurs in excessively lit environments or
when viewing very bright lights (See Figure 4-4). This pattern can be seen in every image intensifier if
the level of light is high enough. This condition is acceptable as long as the pattern does not interfere
with the user’s ability to view an image or interfere with their ability to perform missions.
Figure 4-4. FIXED-PATTERN NOISE
E. Chicken Wire
Chicken wire is an irregular pattern of dark thin lines that can appear in the field of view, either throughout the image area or in sections of the image area (See Figure 4-5). In the worst-case scenario, these
lines will form hexagonal or square, wave-shaped lines. No action is required if this condition is present,
unless it interferes with the user’s ability to view the image or their ability to perform missions.
Figure 4-5. CHICKEN WIRE
28
4.4 Maintenance
4.4.1 General
The section regarding N-7 operator maintenance consists of operational tests, inspections for unit serviceability, cleaning and mounting procedures, troubleshooting, and replacement instructions for a
limited number of parts. Maintenance instructions covered elsewhere in this manual (PMCS, troubleshooting, etc.) are not repeated in this section.
CAUTION:
The N-7 is a precision electron-optical instrument, and must be handled carefully at all times to
prevent damage to the device’s body or mechanisms.
4.4.2 CLEANING PROCEDURES
CAUTION:
Thoroughly dry each item before placing them into the storage case.
Clean the N-7 as follows:
1. Gently brush off any dirt from the unit’s body using a clean, soft cloth.
2. Moisten the cloth with fresh water and gently wipe down external surfaces (except for glass surfaces).
3. Dry any wet surfaces (except for glass surfaces) with another clean, soft, dry cloth.
4. Using a lens brush, carefully remove all loose dirt from the glass surfaces.
5. Slightly dampen a cotton swab with ethanol. Gently and slowly wipe the lenses. Without touching
the lens holders, clean the glass surfaces in circular movements, beginning in the center and moving
out towards the edge. Change the cotton swab after each circular stroke. Repeat until the glass surfaces
are clean.
6. Clean the battery contact surfaces and contact springs with a pencil eraser and/ or alcohol-dampened cotton swabs.
Clean optional mounting devices with a soft brush (cloth), soap, and water as required.
Clean optional lenses as detailed in items 4 and 5 above (except for the demist shield).
4.4.3 Battery Removal and Replacement
Refer to Part 3.1.1 for battery installation procedures. No special tools are required to replace the battery.
29
4.4.4 GOGGLE KIT MAINTENANCE
A. Browpad Replacement
Replace the browpad when cracked, torn, or contaminated. Perform the following to remove and replace the browpads:
1. Firmly grasp the goggle kit and remove the old browpad.
2. Gently press on the new browpad. Gently smooth out any wrinkles in the new browpad.
Figure 4-6. BROWPAD REPLACEMENT
B. Chin Strap Reinstallation
1. Detach the Velcro tape from the left side of the headband and remove the chin strap. Unfasten the
chin strap from the strap assembly.
2. Replace the chin strap by joining the sides of the Velcro tape on the left side of the headband and
threading the end of another strap into the corresponding buckle on the right side of the headband.
Figure 4-7. CHIN STRAP REinstallation
C. Chin Cup Replacement
1. Detach the Velcro tape from the left side of the head-band and remove the chin strap.
2. Slide the chin cup out from the chin strap and replace it with a new one. After replacing the chin cup,
attach the Velcro on the left side of the head-band.
Figure 4-8. CHIN CUP REPLACEMENT
30
4.5 Service/Packing and Unpacking
For service, repair or replacements, please email: service@armasight.com.
To assist the Service Representative (SR) with determining if the item is repairable, please provide the
following information:
1. Serial Number of the defective item.
2. Thorough description of the malfunction, defect or damage.
3. An explanation of how the malfunction, defect or damage occurred, if known.
If the SR determines that the item is under warranty or should be returned for repair, a Return
Material Authorization number (RMA#) will be provided. RMA can be obtained via e-mail to
service@armasight.com or via phone by calling Armasight Customer Service at (888)959-2259
Ext. 2 or via fax (888)959-2260.
When returning the N-7 for service or repair, the following procedures should be followed to prevent
any additional damage:
1. Verify that the N-7 is free of all contaminants such as dirt or any other foreign material.
2. Remove the battery.
3. Place the cap over the lens.
4. Place the N-7 in the hard shipping/ storage case or soft carrying case (if available). If the hard shipping/ storage case is not available, individually package each N-7 unit being returned in a suitable
container.
Place the N-7 and a copy of the test report or detailed description of the failure in a suitable packing/ shipping container. Mark the package with the RMA#. Ship the items using the fastest, most easily
traceable, prepaid method to:
Armasight Inc.
815 Dubuque Avenue
South San Francisco, CA 94080
USA.
31
Appendix
A. N-7 LIST OF SPARE PARTS
The parts authorized in this list of spare parts are required for operator maintenance. This list includes
parts that must be removed in order to replace authorized parts.
The ITEM NO. Column indicates the number used to identify items in Figure A-1.
The PART NO. Column indicates the primary number used by the manufacturer to identify an item; this
number controls the design and characteristics of the item by means of its engineering, specifications,
standards, and inspection requirements.
7
7
5
6
1
3
4
2
8
9
11
10
Figure A-1. N-7 Spare Parts
32
TABLE A-1. N-7 LIST OF SPARE PARTS
ITEM NO.
DESCRIPTION
PART NO.
1
Objective Lens Assembly
N7OLA
2
Lens Cap
N7LC
3
Battery Cap
N7BC
4
Battery Adapter
N7BA
5
Rail
N7RL
6
Eyepiece Assembly
N7EPA
7
Eyecup Assembly
N7ECA
8
CR123A Lithium Battery
CR123A
9
Goggle Kit
N7GK
10
Soft Carry Case
N7SCC
11
Operation and Maintenance Manual
N7OMM
B. Product Warranty Registration Card
In order to validate the warranty on your product, Armasight must receive a completed Product Warranty Registration Card for each unit, or the Customer must complete warranty registration on our
website at www.armasight.com. Please complete the included form and immediately mail it to our
Service Center:
Armasight Inc.
815 Dubuque Avenue
South San Francisco, CA 94080
USA
ARMASIGHT PRODUCT WARRANTY REGISTRATION CARD
PRODUCT INFORMATION
Product Name
Purchased From
Purchase Date
Product Serial #
CUSTOMER INFORMATION
Name
Address
City
Day Phone #
Country
Zip
Home Phone #
E-mail address
Customer Signature Required
33
34
ALPHABETICAL INDEX
A
L
Abbreviations 10
Length 13
B
M
Battery Installation 19
Magnification 13
Black Spots 35
Maintenance 31, 36
Bright Spots 35
C
- Goggle Kit 36
- Preventive 31
Cautions 2
Mounting 18
Chicken Wire 36
O
Cleaning 36
Objective Lens Focus 27, 28
Continuous Operation 13
Operating button 12, 27
Cosmetic Blemishes 34
Operating Instructions 17
D
Operational Defects 34
Diopter Adjustment 13, 28
Operator Troubleshooting 33
E
P
Edge Glow 34
PMCS 31
Emission Points 35
Preparations for Storage 31
Eye Relief 13, 20
S
F
Safety Summary 2
Fixed-Pattern Noise 35
Shading 34
Flashing, Flickering, or Intermittent Operation 34
Spare Parts 39
G
System Description 11
General Information 7
W
H
Warranty Information 8
Height 22
Weight 12
I
Width 12
IR Illumination Range 14
IR Illuminator 2, 12, 29
35
Armasight Inc.
815 Dubuque Avenue
South San Francisco
CA 94080, USA
Phone: (888)959-2259
Fax: (888)959-2260
Intl Phone/Fax: (650)492-7755
info@armasight.com
CAUTION:
This product contains natural rubber latex
which may cause allergic reactions! The FDA
has noted an increase in the number of reported
deaths that are associated with an apparent sensitivity to natural latex proteins. If you are allergic
to latex, it is a good idea to learn which products
contain it and strictly avoid exposure to those
products.
www.armasight.com
36
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