1x Night Vision Monocular Operator Manual Night Vision Monocular Operator Manual Rev. 1.3 | 2015 ... Table 1-1 provides technical specifications for the Sentry 14 Table 1-1 Technical

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1x Night Vision MonocularOperator Manual

Rev. 1.3 | 2015

NM/NG-P14

SAFETY SUMMARYGENERAL

This manual contains operating instructions and maintenance procedures which may cause injury or death to personnel, or damage to equipment if not properly followed. Prior to performing any task, the WARNINGs, CAUTIONs and NOTEs included in that task shall be reviewed and understood.

DEFINITIONS

WARNING

Highlights an essential operating or maintenance procedure, practice, condition or statement, which, if not strictly observed, could result in injury

to, or death of, personnel or long term health hazards.

CAUTION

Highlights an essential operating or maintenance procedure, practice, condition or statement, which, if not strictly observed, could result in

damage to, or destruction of, equipment or loss of mission effectiveness.

NOTE

Highlights an essential operating or maintenance procedure, condition or statement.

i

SAFETY PRECAUTIONSThe following general safety precautions supplement the specific WARNINGs, CAUTIONs and NOTEs that appear elsewhere in this manual.

WARNING

The Infrared (IR) LED Illuminator is detectable by an enemy using night vision devices. Detection is easier in smoky, foggy, or rainy conditions. To reduce the risk of detection by an enemy using night vision devices,

avoid prolonged activation of the IR LED Illuminator.

WARNING

Emission of stray light from the eyepiece (even with eyecup installed) may be detectable by the enemy.

WARNING

Do not touch, ingest, or inhale particles or fragments of a broken objective lens. Lens contains material that may cause irritation to eyes,

skin, upper and lower respiratory tracts, or gastrointestinal tract. If contacted, flush eyes or skin with large amounts of water. If ingested, DO NOT induce vomiting. Rinse mouth with water and give victim 2-4 cupfuls

of milk or water. Fragments of lens may be sharp enough to cut personnel if touched.

ii

iii

WARNING

Remove the Sentry 14 from the weapon before inspecting, cleaning, or performing other maintenance functions.

WARNING

• Do not short circuit, puncture, incinerate, or disassemble battery.• Do not attempt to recharge battery.• Prior to use, inspect battery for cracks, dents, leakage, or bulging. Never install a defective battery in the Sentry 14.

WARNING

Lithium batteries can explode or cause burns if disassembled, shorted, recharged, exposed to water, fire, or high temperatures (above 100°C or

212°F). Do not place loose batteries in a pocket or other container containing metal objects. Do not store batteries with hazardous or

combustible materials. Store in a cool, dry, ventilated area.

WARNING

Use of off-brand batteries poses a risk of fire or explosion. Ensure that only a 1.5V AA battery produced by a well-known battery manufacturer is installed in the Sentry 14. These batteries are specifically designed for use

in high performance, high-drain devices, and contain built-in fault and heat protection features.

iv

CAUTION

Do not ship or store the Sentry 14 with the battery installed.

CAUTION

Pointing the Sentry 14 at the sun without the lens cover installed may damage internal imaging components.

CAUTION

The coating on the demist shield may be damaged if cleaned while wet. Clean the demist shield only when dry and using dry lens tissue.

CAUTION

Use of acetone or gun cleaning agents containing perchloroethylene or methylene chloride may permanently damage the Sentry 14.

v

TABLE OF CONTENTSSAFETY SUMMARY iTABLE OF CONTENTS vLIST OF FIGURES viiLIST OF TABLES vii

CHAPTER 1 - INTRODUCTION 1-1SECTION I - GENERAL INFORMATION 1-11.1 SCOPE 1-11.2 MODEL NUMBER AND EQUIPMENT NAME 1-21.3 MANUFACTURER 1-21.4 PURPOSE OF EQUIPMENT 1-21.5 ABBREVIATIONS AND ACRONYMS 1-2

SECTION II - EQUIPMENT DESCRIPTION 1-31.6 SYSTEM DESCRIPTION 1-31.7 TECHNICAL SPECIFICATIONS 1-41.8 MAJOR COMPONENTS 1-51.9 FEATURES AND CONTROLS 1-8

CHAPTER 2 - OPERATING INSTRUCTIONS 2-1SECTION I - PREPARATION FOR USE 2-12.1 PREPARATION FOR USE 2-12.2 BATTERY HANDLING 2-22.3 HEADMOUNT ASSEMBLY 2-32.4 WEAPON MOUNTING INSTRUCTIONS 2-112.5 LENS ACCESSORIES 2-14

SECTION II - OPERATING INSTRUCTIONS 2-162.6 MODES OF OPERATION 2-162.7 IR LED ILLUMINATOR 2-172.8 GAIN (CONTRAST) 2-182.9 FOCUS 2-182.10 DIOPTER ADJUSTMENT 2-192.11 STARTUP PROCEDURES 2-19

vi

TABLE OF CONTENTSCHAPTER 3 - MAINTENANCE 3-1SECTION I - OPERATOR MAINTENANCE 3-13.1 TROUBLESHOOTING PROCEDURES 3-13.2 INSPECTION / CLEANING 3-33.3 CORRECTIVE MAINTENANCE PROCEDURES 3-5

SECTION II - SERVICE / PACKING AND UNPACKING 3-73.4 SERVICE / REPAIR 3-73.5 WARRANTY INFORMATION 3-83.6 NON-WARRANTY INFORMATION 3-8APPENDIX A A-1REPAIR PARTS LIST A-1APPENDIX B B-1ACCESSORIES B-1

LIST OF FIGURESFigure 1-1 Headmounted Sentry 14 1-1Figure 1-2 Major Components 1-5Figure 1-3 Features and Controls 1-8Figure 2-1 Battery Installation 2-2Figure 2-2 Low Battery Indicator 2-3Figure 2-3 Headmount Assembly 2-4Figure 2-4 Headmount Adapter Installation 2-6Figure 2-5 Mounting to Headmount Assembly 2-7Figure 2-6 Fore / Aft Release Button 2-8Figure 2-7 Adjustment Knob 2-9Figure 2-8 Weapon Mount Assembly 2-11Figure 2-9 Weapon Mount Assembly Installation 2-12Figure 2-10 Mounting the Sentry 14 2-13Figure 2-11 Sentry 14 Eyecups 2-15Figure 2-12 IR LED Illuminator Indicator 2-18Figure 3-1 Neck Cord Replacement 3-6Figure A-1 End Item Components A-1Figure A-2 Sentry 14 Assembly A-3

LIST OF TABLESTable 1-1 Technical Specifications 1-4Table 1-2 List of Major Components 1-6Table 1-3 List of Features and Controls 1-9Table 2-1 Field of View and Positioning Adjustments 2-10Table 2-2 Mode Switch Operation 2-17Table 3-1 Troubleshooting Procedures 3-1Table A-1 List of End Item Components A-2Table A-2 List of Repair Parts A-3Table B-1 List of Accessories B-1

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1-1

CHAPTER 1 - INTRODUCTIONSECTION I - GENERAL INFORMATION

Figure 1-1 Headmounted Sentry 14

1.1 SCOPE

This manual is intended for use by operators of the Monocular Night Vision Device (Sentry 14). It provides a system description, operational procedures, and maintenance responsibilities. Complete familiarization with this manual prior to using the equipment will ensure safe operation and maximum effectiveness of the Sentry 14.

1-2

1.2 MODEL NUMBER AND EQUIPMENT NAME

Sentry 14 Night Vision Monocular / AN/PVS-14

1.3 MANUFACTURER Night Optics USA, Inc. 15182 Triton Lane, Suite 101 Huntington Beach, CA 92649

1.4 PURPOSE OF EQUIPMENT

The Sentry 14 allows for observation under adverse conditions including light rain, smoke, light snow, and low light to total darkness.

1.5 ABBREVIATIONS AND ACRONYMS

Abbreviations and acronyms used in this manual are listed as follows:

cm Centimeter g Gram I2 Image Intensifier IR Infrared ITAR International Traffic in Arms Regulations LED Light Emitting Diode mm Millimeter NSN National Stock Number RMA Return Material Authorization TBD To Be Determined V Volt

1-3

SECTION II - EQUIPMENT DESCRIPTION1.6 SYSTEM DESCRIPTION

The Sentry 14 is a portable, battery operated night vision device with an integrated IR light source. It can be used as a handheld device or may be mounted to a weapon, helmet, or headmount assembly.

When used in the normal operating mode (ON), the Sentry 14 amplifies available ambient light to allow for observation under adverse conditions including light rain, smoke, light snow, and low light conditions. When used in the IR mode, the Sentry 14 generates its own light with an integrated IR LED Illuminator to allow for observation, map reading, etc. even in complete darkness.

The Sentry 14 is a ruggedized system designed for operation inbattlefield environments.

1-4

1.7 TECHNICAL SPECIFICATIONS

Table 1-1 provides technical specifications for the Sentry 14

Table 1-1 Technical Specifications

1Performance will vary depending on actual environmental and atmospheric conditions.

WEIGHT AND DIMENSIONS

POWER AND PERFORMANCE

Weight

WidthLength (with standard eyecup)

Height

BatteryBattery File1

Magnification

< 13.8 ounces (391g)6.5 inches (16.5 cm)2.8 inches (7.1 cm)2.4 inches (6.1 cm)

(1) 1.5v AA40 hours1x40º (± 2º)9.8 inches (25cm) to infinity+2 to -666 feet (20m)-60ºF (-51ºC) to 120ºF (49ºC)-60ºF (-51ºC) to 185ºF (85ºC)

Field of ViewObjective FocusDiopter AdjustmentImmersionOperating TemperatureStorage Temperature

1-5

1.8 MAJOR COMPONENTS

The Sentry 14 system includes the components shown in Figure 1-2. Table 1-2 provides a brief functional description of each item. The “Key” column in Table 1-2 corresponds to the label numbers in Figure 1-2.

1

2 3

4

5

67

8

9

10

1112

1315

14

Figure 1-2 Major Components

1-6


Table 1-2 List of Major Components

Key Major Component Function

Used on the headmount assembly to provide maximum comfort and best fit.

Worn on the head to permit hands-free operation of the Sentry 14.

Protects the Sentry 14 and accessories while in a field environment.

Provides detailed operating and maintenance procedures specific to the Sentry 14.

Provides at-a-glance operating instructions for the Sentry 14.

Used to clean the optical surfaces of the Sentry 14.

May be tied to the Sentry 14 and clipped to the operator to secure the Sentry 14 when not in use.

Protects the objective lens from becoming scratched or otherwise damaged.

Protects the eyepiece from becoming scratched or otherwise damaged and prevents fogging of the eyepiece.

1

2

3

4

5

6

7

8

9

Brow Pads

Headmount Assembly

Soft Carrying Case

Operator Manual

Quick Reference Guide

Lens Tissue

Retainer Cord

Sacrificial Window

Demist Shield


Table 1-2 List of Major Components


1-7

Allows the Sentry 14 to be installed on the headmount assembly or a suitably configured helmet.

Allows the Sentry 14 to be mounted to weapons equipped with a MIL-STD-1913 rail.

Reduces emission of stray light from the eyepiece when the Sentry 14 is used in a weapon-mounted configuration.

A portable, battery operated night vision device with integrated IR light source.

Provides power to the Sentry 14.

Allows the soft carrying case to be slung across the shoulder for ease of carrying.

10

11

12

13

14

15

Headmount Adapter

Weapon Mount Assembly

Eyecup, Shuttered

Sentry 14 Assembly

AA Lithium Battery

Shoulder Strap

1-8

1.9 FEATURES AND CONTROLS

Figure 1-3 shows features and controls for the Sentry 14. Table 1-3 provides a brief functional description of each item. The “Key” column in Table 1-3 corresponds to the label numbers in Figure 1-3.

1

2

5 6

7

8

1112

3

10 9

4

Figure 1-3 Features and Controls


Table 1-3 List of Features and Controls


Collects available light within the viewed scene and focuses it onto the input surface of an image intensifier (I2) tube.

Used to focus the Sentry 14 from 9.8 inches (25cm) to infinity.

Detects ambient light conditions so that the I2 tube will be automatically shut off if conditions are so bright as to risk damaging internal components.

Provides female threading to accept the headmount adapter and weapon mount assembly.

Used to focus the eyepiece lens to compensate for the visual acuity of the operator.

Assists in positioning the Sentry 14 relative to the operator’s eye in handheld and headmounted configurations. Reduces emission of stray light from the eyepiece.

3-position switch used to turn the Sentry 14 on in a selected operating mode.

Protects the objective lens and internal imaging components and prevents glare or reflection off the objective lens when the Sentry 14 is not in use.

1

2

3

4

5

6

7

8

Objective Lens

Focus Ring

High Light Sensor

Mounting Interface

Diopter Adjuster

Eyecup

Mode Switch

Lens Cover

1-9


Table 1-3 List of Features and Controls


Holds the objective lens cover captive to the Sentry 14. Allows for the Sentry 14 to be worn around the neck during periods of nonuse.

Used to provide a supplementary light source in conditions of extreme darkness.

Used to adjust the gain (contrast) of the viewed image.

Provides secure housing for the single AA battery that powers the Sentry 14.

9

10

11

12

Neck Cord

IR LED Illuminator

Gain Control Knob

Battery Cap / Compartment

1-10

2-1

CHAPTER 2 - OPERATING INSTRUCTIONSSECTION I - PREPARATION FOR USE

2.1 PREPARATION FOR USE

Unpacking the Equipment

Open the soft carrying case and verify that all major components listed in Table 1-2 are present. Check the Sentry 14 to ensure the following additional items are included:

a. Eyecup b. Lens Cover c. Battery Cap d. Neck Cord

If any of the major components or items listed above are missing, seek guidance from the equipment issuing authority.

Inspection of the Equipment

Before use, inspect all pieces of equipment for any damage such as cracks, loose parts, faulty cables, or other visible defects. If any damage or defects are noted, seek guidance from the equipment issuing authority.

2-2

2.2 BATTERY HANDLING

Battery Inspection

Before installation, inspect the battery for any cracks, dents, leakage, or bulging. Never install a defective battery in the Sentry 14.

Battery Installation

Access the battery compartment by turning the battery cap counter clockwise. Install one AA lithium battery with the positive terminal facing in as shown in Figure 2-1. Proper battery orientation is clearly marked on the Sentry 14 housing. Replace the battery cap and turn clockwise to tighten.

Figure 2-1 Battery Installation

2-3

2.2 BATTERY HANDLING

CAUTION

Do not ship or store the Sentry 14 with battery installed.

Low Battery Indicator

A red light visible through the eyepiece, just outside the intensified field of view, indicates a low battery condition. It will illuminate when approxi-mately 30 minutes of operation remain.

Figure 2-2 Low Battery Indicator

2.3 HEADMOUNT ASSEMBLY

The Sentry 14 system comes with a headmount assembly that may be wornon the head to permit hands-free operation of the Sentry 14.

FIELD OF VIEWLOW BATTERY

INDICATOR

2-4


Donning the Headmount Assembly

The following procedures for donning the headmount assembly should be performed before attaching the headmount adapter and Sentry 14.

1. Review Figure 2–3 to gain familiarity with the labeled items that will be referred to in this section.

FRONT CHIN STRAP (2)

REAR CHIN STRAP (2)

VERTICAL ADJUSTMENT

STRAP

NECK PAD

SNAPS (4)

Figure 2-3 Headmount Assembly

2-5


2. Loosen the four chin straps until the ends of each strap are approxi-mately two inches from the sliding bar buckles.

3. Ensure the front and rear snaps are engaged.

4. Position the neck pad on the back of the neck and pull the headmount assembly over the head.

5. Remove slack from the two rear chin straps but do not tighten.

6. Adjust front and rear chin straps and vertical adjustment strap until the headmount assembly is in a comfortable but firm position.

NOTE

Minor strap adjustments may be necessary after installing the headmount adapter and Sentry 14.

Headmount Adapter

The headmount adapter allows the Sentry 14 to be installed on the headmount assembly or a suitably configured helmet.

1. With the Sentry 14 in one hand, use the free hand to orient the headmount adapter above the mounting interface as shown in Figure 2-4. Keying features in the headmount adapter and mounting interface allow only one orientation.

2. Rotate the thumbscrew clockwise to secure the headmount adapter to the Sentry 14, taking care not the cross threads.

2-6

THUMBSCREW

MOUNTI NG INTERFACE


Figure 2-4 Headmount Adapter Installation

3.The headmount adapter is now installedonthe Sentry 14.

Mounting

Align the headmount adapter with the receptacle on the headmount assembly as shown in Figure 2-5 and push the parts together until the mating features engage. To disengage, press the release lever shown below.

2-7

RELEASE LEVER


Figure 2-5 Mounting to Headmount Assembly

Positioning Adjustments

With the Sentry 14 system installed, positioning adjustments must be made for maximum performance and comfort. Figures 2-6 and 2-7 show controls used for positioning adjustments.

NOTE

Positioning adjustments are made with the Sentry 14 attached to the headmount, the eyecup installed, and the headmount properly donned. The Sentry 14 cannot be properly adjusted until the headmount itself is

correctly fitted.

2-8


NOTE

Optimal system performance and comfort of the operator rely on carefully following the procedures below. The best visual performance is possible only when the optical axis of the device is aligned with the visual axis of

the eye.

• Fore / Aft Adjustment. The Sentry 14 can be moved forward or backward relative to the head. Press the fore / aft release button and slide the Sentry 14 forward or backward to achieve optimal eye relief.

Figure 2-6 Fore / Aft Release Button

2-9


• Height Adjustment. The headmount’s vertical adjustment strap (see Figure 2-3) provides for height adjustment of the Sentry 14. Tighten or loosen the vertical adjustment strap until the Sentry 14 is level with the operator’s eyes.

• Pupillary Adjustment. The Sentry 14 can be moved in an arc to provide best alignment with the operator’s eye. Unscrew the adjustment knob to its full and open position (see Figure 2-7). Gently push the Sentry 14 away from the operator’s head and rotate clockwise or counter clockwise until proper positioning is achieved. Screw in the adjustment knob to lock the Sentry 14 in place.

Figure 2-7 Adjustment Knob

2-10


The first row in Table 2-1 shows the optimal field of view for the Sentry 14 when positioning adjustments are correctly performed. The remaining rows show unsatisfactory fields of view when positioning adjustments are performed incorrectly, along with corrective action that can be taken to resolve the problem.

Table 2-1 Field of View and Positioning Adjustments

Optimal alignment.

FIELD OF VIEW REMARKS / CORRECTIVE ACTION

Eye relief too long. Correct fore and aft adjustment.

Eye relief too short. Correct fore and aft adjustment.

Eyepiece set too left. Correct pupillary adjustment.

Eyepiece set too right. Correct pupillary adjustment.

2-11

THUMBSCREW

MOUNTING SCREW

JAWS


Table 2-1 Field of View and Positioning Adjustments

2.4 WEAPON MOUNTING INSTRUCTIONS

The weapon mount assembly allows the Sentry 14 to be mounted to weapons equipped with a MIL-STD-1913 rail.

Positioned too high.Correct height adjustment.

FIELD OF VIEW REMARKS / CORRECTIVE ACTION

Positioned too low. Correct height adjustment.

Sentry 14 field of viewEyepiece field of viewObstructed Sentry 14 field of view

Figure 2-8 Weapon Mount Assembly

2-12

MOUNTING INTERFACE

THUMBSCREW


Installing the Weapon Mount Assembly

1. With the Sentry 14 in one hand, use the free hand to orient the weapon mount assembly above the mounting interface as shown in Figure 2-9. Keying features in the weapon mount assembly and mounting interface allow only one orientation.

2. Rotate the thumbscrew clockwise to secure the weapon mount assembly to the Sentry 14, taking care not the cross threads.

Figure 2-9 Weapon Mount Assembly Installation

3. The weapon mount assembly is now installed on the Sentry 14.

2-13


Mounting the Sentry 14

WARNING

Be sure the weapon is CLEAR and SAFE before proceeding.

1. Loosen the mounting screw on the weapon mount assembly until the jaws have sufficient space to fit over the weapon rail.

2. Position the Sentry 14 facing forward, ensuring the recoil lug is seated in the desired recoil groove of the rail. While pushing down and forward on the Sentry 14, turn the mounting screw clockwise until snug.

Figure 2-10 Mounting the Sentry 14

2-14

2.5 LENS ACCESSORIES

Objective Lens Cover

The objective lens cover affords additional protection to the objective lens and protects the Sentry 14’s internal imaging components. It should be pressed into place (installed) over the objective lens whenever the Sentry 14 is not being used. It should also be installed when the Sentry 14 is being used in brightly lit environments. A small hole in the center of the lens cover allows enough light to enter the Sentry 14 when operating in these conditions. In darker environments, better performance will be observed with the lens cover uninstalled. The objective lens cover is held captive to the Sentry 14 by the neck cord.

Sacrificial Window

A sacrificial window is provided to protect the objective lens from becoming scratched or otherwise damaged. The sacrificial window should be pressed into place (installed) over the objective lens whenever the lens cover is not installed.

Demist Shield

CAUTIONThe coating on the demist shield may be damaged if cleaned while wet.

Clean the demist shield only when dry and using dry lens tissue.

2-15

2.4 LENS ACCESSORIES

The demist shield is provided to protect the eyepiece from becoming scratched or otherwise damaged, and to prevent fogging of the eyepiece. It should be installed whenever the Sentry 14 is in use. With the eyecup removed, place the demist shield over the eyepiece with the narrow side in. Taking care not to smudge the eyepieceor demist shield, press the demist shield into place.

Eyecups

The Sentry 14 is equipped with both a standard and shuttered eyecup to accommodate a variety of tactical situations and mounting configurations.

To install, press the desired eyecup over the end of the eyepiece. If installing the standard eyecup, rotate to obtain proper eye / cheek weld.

STANDARD EYECUP SHUTTERED EYECUP

Figure 2-11 Sentry 14 Eyecups

2-16

SECTION II - OPERATING INSTRUCTIONS2.6 MODES OF OPERATION

The Sentry 14 is powered on by turning the Mode Switch to the desired position.

CAUTION

Pointing the Sentry 14 at the sun without the lens cover installed may damage internal imaging components.

NOTE

The Sentry 14 is equipped with a high light sensor (see Figure 1-3) that detects ambient light conditions and automatically shuts down the I2 tube

if conditions are so bright as to risk damaging internal components. To reset (power on) the Sentry 14 after a high light shutdown, turn the Mode Switch to the RESET / OFF position and then back to the desired setting.

2-17

2.7 IR LED ILLUMINATOR

WARNING

The IR LED Illuminator is detectable by an enemy using night vision devices. Detection is easier in smoky, foggy, or rainy conditions. To

reduce the risk of detection by an enemy using night vision devices, avoid prolonged activation of the IR LED Illuminator.

The IR LED Illuminator is used to provide a supplementary light source in conditions of extreme darkness. In addition to the IR mode described in Table 2-2, the IR LED Illuminator may also be activated in a momentary setting. To momentarily activate the IR LED Illuminator, turn the Mode Switch to the ON position. Continue turning past the ON position and hold. The IR LED Illuminator will remain activated until the Mode Switch is released.

A red light in the eyepiece, just outside the intensified field of view, indicates that the IR LED Illuminator is activated.

MODE SWITCH POSITION EFFECT

RESET OFF

ON

Turns Sentry 14 off. Resets the Sentry 14 after a high light shutdown.Activates the Sentry 14 using (and amplifying) available, ambient light.Activates the Sentry 14 using the IR LED Illuminator to provide an integrated light source in conditions of extreme darkness.

IR PULL

2.6 MODES OF OPERATION

Table 2-2 Mode Switch Operation

Figure 2-12 IR LED Illuminator Indicator

2.8 GAIN (CONTRAST)

The Sentry 14 is equipped with a gain control knob used to adjust the gain (contrast) of the viewed image. When looking through the eyepiece, turning the gain control knob clockwise will provide more contrast. Turning the gain control knob counter clockwise will provide less contrast.

2.9 FOCUS

The objective lens must be focused for the viewing distance being observed. While looking at an object at least 9.8 inches (25cm) from the Sentry 14, rotate the objective focus ring for best image clarity. A change in viewing distance requires that the objective lens be refocused. If already focused for a distance of at least 250 feet (76m), no change in focus is required between this distance and infinity.

2-18

FIELD OF VIEWIR LED ILLUMINATOR

INDICATOR

2.7 IR LED ILLUMINATOR

2-19

2.10 DIOPTER ADJUSTMENT

The eyepiece may be focused to accommodate differences in the visual acuity of individual operators, from +2 to -6 diopters. While looking at an object at least 9.8 inches (25cm) from the Sentry 14, rotate the diopter adjuster to achieve the sharpest possible image.

2.11 STARTUP PROCEDURES

To achieve optimal performance and image clarity, the following procedures should be accomplished in the order presented, each time the Sentry 14 is placed into use.

1. Perform mounting procedures and positioning adjustments as applicable:

a. For head or helmet-mounted configurations, don the headmount and Sentry 14 and make all positioning adjustments per section 2.3.

b. For weapon-mounted configurations, install the weapon mount assembly and mount to the host weapon per section 2.4.

2. Turn the Mode Switch to the desired position per section 2.6.3. Adjust the gain (contrast) to a comfortable viewing level per section 2.8.4. Rotate the objective focus ring for best image clarity.5. Make diopter adjustments per section 2.10.


3-1

CHAPTER 3 - MAINTENANCESECTION I - OPERATOR MAINTENANCE

3.1 TROUBLESHOOTING PROCEDURES

The procedures below will help correct some of the basic problems that may arise with the Sentry 14. If the equipment malfunction is not listed, or the actions listed do not correct the fault, refer to section 3.4 for additional guidance.

Table 3-1 Troubleshooting Procedures

MALFUNCTION PROBABLE CAUSE CORRECTIVE ACTION1. No image is present when turning on the Sentry 14.

2. Image abruptly turns off when in ON or IR modes.

3. Poor or degraded image.

a. Batteries are improperly installed.

b. Battery power is low.c. Battery contacts require cleaning.

a. Lens cover installed (dark ambient conditions).

b. Lens cover not installed (bright ambient conditions).

a. High light shutdown has been initiated.

a. Verify batteries are properly installed per section 2.2, Battery Installation.

b. Replace batteries per section 2.2, Battery Installation.

c. Clean battery contacts per section 3.2, Battery Compartment and Battery Cap.

a. Reset (power on) the MNVD per section 2.6. Install the objective lens cover per section 2.5, Objective Lens Cover, if necessary.a. Remove lens cover per section 2.4, Objective Lens Cover.

b. Install lens cover per section 2.5, Objective Lens Cover.

3-2

3.1 TROUBLESHOOTING

Table 3-1 Troubleshooting Procedures

3. Poor or degraded image

c. Insufficient ambient light.

d. Gain (contrast) not adjusted to an appropriate setting.

e. Not focused for viewing distance being observed (minimum 9.8 inches).

g. Sacrificial window and/or demist shield obscured by dirt, dust, or grime.

f. Diopter setting not adjusted correctly.

d. Adjust gain (contrast) to a comfortable level per section 2.8.

e. Focus objective lens per section 2.9.

f. Adjust diopter setting per section 2.10.

g. Clean sacrificial window and/or demist shield per section 3.2, Optical Surfaces.

h. Sacrificial window and/or demist shield cracked or scratched.

h. Replace sacrificial window and/or demist shield per section 2.5.

i. Objective lens and/or eyepiece obscured by dirt, dust or grime.

i. Remove sacrificial window and/or demist shield. Clean objective lens and/or eyepiece per section 3.2, Optical Surfaces.

a. IR LED Illuminator exit port is dirty.

a. Clean IR LED Illuminator exit port per section 3.2, Optical Surfaces.

b. Viewed scene is outside effective range of IR LED Illuminator.

b. Limit use of IR LED Illuminator to viewed scenes within a few meters of the Sentry 14.

MALFUNCTION PROBABLE CAUSE CORRECTIVE ACTION

4. IR LED Illuminator does not appear to operate or provides insufficient light.

c. Turn the Mode Switch to the IR position to provide IR light source per section 2.6, or momentarily activate the IR LED Illuminator per section 2.7.

3-3

3.2 INSPECTION / CLEANINGThe operator should inspect the Sentry 14 before each use and after it has been in extreme conditions, such as prolonged exposure to intense temperatures. The following procedures will extend the life of the Sentry 14 and help ensure safe operation.

WARNING

Remove the Sentry 14 from the weapon before inspecting, cleaning, or performing other maintenance functions.

WARNINGPrior to performing any inspection or maintenance procedure,

verify that batteries are not installed.

Sentry 14 Housing

To clean the Sentry 14 housing, rinse with water or mild soap and water and then wipe dry with a soft cloth. Clean around adjusters, levers, and interfaces with a cotton swab.

Battery Compartment

Inspect the battery compartment for dirt, dust, or corrosion. Dirt or debris that cannot be shaken loose from the battery compartment may be removed using a clean cloth or cotton swab. Periodically lubricate the o-ring with fluorinated grease. The o-ring should be replaced if it becomes cut, nicked, or dried out per section 3.3, Replacing Battery Compartment O-Ring. If necessary, clean battery contacts with a cotton swab and isopropyl alcohol.

3-4

3.2 INSPECTION / CLEANING

Battery Cap

Inspect the battery cap for dirt, sand, and grime. Thoroughly clean the battery cap and o-ring by flushing with water and wiping with a cotton swab. Periodically lubricate the o-ring with fluorinated grease. If neces-sary, clean the battery contact with a cotton swab and isopropyl alcohol.

Optical Surfaces

CAUTION

The coating on the demist shield may be damaged if cleaned while wet. Clean the demist shield only when dry

and using dry lens tissue.

Inspect optical surfaces for dirt, dust, and grime. Except for the demist shield, clean with water or mild soap and water. Fine cleaning of the optical surfaces should be performed using the provided lens tissue and lens cleaning solution, or the flexible tip of the lens pen. Avoid using excessive force as this may scratch the lenses. The sacrificial window and demist shield should be replaced if scratches degrade performance or cracks are present.

Neck Cord

Inspect the neck cord for any signs of cuts, nicks, or fraying. Replace as necessary per section 3.3, Lens Cover / Neck Cord Replacement.

3-5

3.3 CORRECTIVE MAINTENANCE PROCEDURES

The Sentry 14 has no internal parts or assemblies replaceable by the user or organizational level personnel. Refer to section 3.4 regarding mainte-nance and/or repair actions beyond those described in this manual.

Replacing Battery Compartment O-Ring

No tools are required to perform this procedure.

1. Access the battery compartment by turning the battery cap counter clockwise.2. Use the fingers of one hand to squeeze the battery compartment o-ring while simultaneously pushing it out of its retaining groove. Grasp the o-ring with fingers of the other hand and pull it off the battery compartment.3. Ensure the o-ring retaining groove is clean and free of debris.4. Stretch the replacement o-ring over the battery compartment and into its retaining groove.

Neck Cord Replacement

No tools are required to perform this procedure.

1. Feed one end of the neck cord through the channel on the Sentry 14 housing as shown in Figure 3-1.2. Feed the other end of the neck cord through the tab in the lens cover.3. Secure both ends with a knot.4. Place the lens cover over the objective lens.

3-6

3.3 CORRECTIVE MAINTENANCE PROCEDURES

Figure 3-1 Neck Cord Replacement

3-7

SECTION II - SERVICE / PACKING AND UNPACKING3.4 SERVICE / REPAIR

For service, repair, or replacement, first e-mail [email protected] or call toll-free (800) 306-4448.

To assist with determining if the item is repairable, the following informa-tion will be requested:

a. Serial number of the defective item;b. Thorough description of the malfunction, defect, or damage; andc. If known, an explanation as to how the malfunction, defect or damage occurred.

If the item is determined to be beyond economical repair, follow applica-ble replacement procedures through your Property Officer. If it is determined that the item is under warranty, or should be returned for repair, a Return Material Authorization (RMA) number will be provided.

When returning the Sentry 14 for service / repair, the following procedures should be followed to prevent any additional damage:

1. Be sure that the Sentry 14 is free of all contaminants such as dirt or any other foreign material.2. Remove battery.3. Place the Sentry 14 in the soft carrying case.

3-8

3.4 RETURN INSTRUCTIONS

Place the item and a copy of the test report or detailed description of the failure in a suitable packing container. Mark the package with “Field Return” and the RMA number. Ship via fastest, traceable, pre-paid means to:

Night Optics USA, Inc.Attn: RMA Department[RMA Number]15182 Triton Lane, Suite 101Huntington Beach, CA 92649

3.5 WARRANTY INFORMATION

The Sentry 14 is under warranty from defects in material and workman-ship for a minimum of one (2) year from the date of manufacture. This warranty does not protect against damage due to misuse, mishandling or battery leakage.

3.6 NON-WARRANTY INFORMATION

Non-warranty repairs are subject to an evaluation fee. The item will be tested and evaluated for failure, then customer permission and payment terms are obtained prior to any repairs being performed.

APPENDIX A - REPAIR PARTS LISTSCOPE

This Appendix lists end item components and repair parts for the Sentry 14.

A-1

1

3 4

5

6

78

9

10

11

1213

1416

15

2

Figure A-1 End Item Components

A-2

SCOPE

Table A-1 List of End Item Components

ITEM NO. NSN QTYPART NO. DESCRIPTION123456789

1011121314151617

11111111111111111

8415-01-560-1800

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

8415-01-560-1799

6760-01-556-4306

5855-01-444-1230

6650-01-444-1229

6135-01-559-9637

8465-01-559-8427

8415-01-598-3125

Browpad, MediumBrowpad, ThickHeadmount AssemblySoft Carrying CaseOperator ManualQuick Reference GuideLens TissueRetaining Cord Sacrificial Window Demist ShieldAdapter, Headmount / Helmet MountMount Assembly, WeaponEyecup, ShutteredSentry 14 Assembly (Complete)Battery, 1.5V, AAShoulder Strap AssemblyBrowpad, Thin

Contact usContact usContact usContact usContact usContact usContact usContact usContact usContact usContact usContact usContact usContact usContact usContact usContact us

SCOPE

Figure A-2 Sentry 14 Assembly

Table A-2 List of Repair Parts

A-3

1

2

34

ITEM NO. NSN QTYPART NO. DESCRIPTION1234

1111

5855-01-556-26604520-01-455-6662

N/AN/A

Contact us Eyecup, StandardNeck CordLens CoverO-Ring, Battery Compartment

Contact usContact usContact us


APPENDIX B - ACCESSORIESSCOPE

This Appendix lists accessories available for support of the Sentry 14.

Table B-1 List of Accessories

B-1

NSN QTYPART NO. DESCRIPTION1N/A Contact us Compass


Export of Night Vision is controlled by the Directorate of Defense Trade Controls, U.S. Department of State, and is subject to the International Traffic in Arms Regulations per title 22, Code of Federal Regulations (CFR), Parts 120-130. All foreign sales are subject to approval by the U.S. Department of State.

© Night Optics USA, Inc.

15182 Triton Lane, Suite 101 | Huntington Beach, CA 92649Ph: (714) 899-4475 | Fax: (714) 899-4485

[email protected] | www.nightoptics.com

1x Night Vision Monocular Operator Manual Night Vision Monocular Operator Manual Rev. 1.3 | 2015 ... Table 1-1 provides technical specifications for the Sentry 14 Table 1-1 Technical

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