PVS14 Manual

INTRODUCTION

1.1. GENERAL INFORMATION

1.1.1. SCOPE

This manual provides operation and maintenance instructions for the Multi-Use Night Vision Monocular (MUNVM) ATN PVS-14 and ATN 6015, hereinafter referred to as the MUNVM. The MUNVM is a self-contained night vision device that enables improved night vision using ambient light from the night sky (moon, stars, skyglow, etc.).

Model Number and basic description
ATN NVM-14 and ATN 6015 - Multi-Use Night Vision Monocular

Supplier
American Technologies Network Corp.
1341 San Mateo Avenue
South San Francisco, CA 94080 USA

1.1.2. WARRANTY INFORMATION

This item shall conform to design, manufacturing, and performance requirements and be free from defects in material and workmanship for a period of two (2) years from the date of acceptance. If item is defective, notify ATN or point of purchase contact.

1.1.3. TECHNICAL INFORMATION

For technical information contact ATN Corp. directly at 650-989-5100, or info@atncorp.com, or your point of purchase contact.

1.1.4. NOMENCLATURE CROSS-REFERENCE LIST

Table 1.1 provides a cross reference of common names and official terms. Except in the appendices, the common names are used. The official names are used in the appendices because they reflect the provisioning nomenclature.

Common Name	Official Nomenclature
Battery	Battery Nonrechargeable
Battery Cap	Cover Battery Retainer
Carrying Case	Case, Infrared Equipment
Carrying Case Strap	Strapping
Compass	Compass Assembly
Demist Shield	Lens, Infrared Receiver
Eyeguard	Eyeguard, Optical
Eyepiece Lens Cap	Cap, Protective, Dust
Headmount	Headset Assembly
Headmount/Helmet Mount Adapter	Adapter, Headset
Helmet Mount	Mount, Viewer
LIF	Filter, Infrared Light
Medium Browpad	Browpad Assy, Medium
Monocular	Monocular Assy
Neck Cord	Cord, Fibrous
Objective Lens Cap	Cap, Protective, Dust
Sacrificial Window	Window, Sacrificial
Shipping and Storage Case	Case, Shipping/Storage
Tethering Cord	Clip, Retaining
Thick Browpad	Browpad Assy, Thick
Thin Browpad	Browpad Assy, Thin
3X Magnifier	Magnifier Lens Assembly
Weapon Mount	Bracket, Mounting

1.1.5. LIST OF ABBREVIATIONS AND ACRONYMS

• AAL - Additional Authorization List
• BII - Basic Issue Items
• CAGEC - Commercial and Government Entity Code
• cm - Centimeters
• COEI - Components of End Item
• CPC - Corrosion Prevention and Control
• CTA - Common Table of Allowances
• DA - Department of the Army
• EIC - End Item Code
• EIR - Equipment Improvement Recommendation
• FM - Field Manual
• Hrs - Hours
• IR - Infrared
• JTA - Joint Table of Allowances
• lbs - Pounds
• LED - Light Emitting Diode
• LIF - Light Interference Filter
• MUNVM - Multi-Use Night Vision Monocular
• NVMPS - Night Vision Multi-Purpose System
• MTOE - Modified Table of Organization and Equipment
• N/A - Not Applicable
• NBC - Nuclear, Biological, and Chemical
• NSN - National Stock Number
• Pam - Pamphlet
• PASGT - Personal Armor System Ground Troops
• PMCS - Preventive Maintenance Checks and Services
• Qty - Quantity
• Recm - Recommended
• Rqr - Required
• SF - Standard Form
• TDA - Table of Distribution and Allowances
• TM - Technical Manual
• TOE - Table of Organization and Equipment
• U/M - Unit of Measure
• Vdc - Volts, direct current

1.1.6. GLOSSARY

BLACK SPOTS. These are cosmetic blemishes in the image intensifier of the MUNVM or dirt or debris between the lenses.

BRIGHT SPOTS. These defects can appear in the image area of the MUNVM. This condition is caused by a flaw in the film on the microchannel plate. A bright spot is a small, nonuniform, bright area that may flicker or appear constant. Bright spots usually go away when the light is blocked out and are cosmetic blemishes that are signal induced.

BROWPADS. Three hook-and-pile browpads are provided to adjust the headmount to fit different head sizes. The thin browpad comes attached to the headmount and the thick or medium browpads are stored in the carrying case.

CAUTION. Conditions, practices, or procedures that must be observed to avoid damage to equipment, destruction of equipment, or a long-term health hazard.

CHICKEN WIRE. An irregular pattern of dark thin lines in the field-of-view either throughout the image area or in parts of the image area.

DARK (OR DARK AREA). A place in which there is very little light. It does not mean total darkness.

DARK-ADAPTED. Having one's eye adjusted to the monocular's output under low light conditions.

DIOPTER. A unit of measure used to define eye correction. Adjustments to the diopter adjustment will provide a clearer image in each eye.

EDGE GLOW. This is a defect in the image area of the monocular. Edge glow is a bright area, sometimes sparkling, in the outer portion of the viewing area.

EMISSION POINT. A steady or fluctuating pinpoint of bright light in the image area that does not go away when all light is blocked from the objective lens.

FIXED-PATTERN NOISE. This is a cosmetic blemish in the image area characterized by a faint hexagonal honeycomb pattern throughout the viewing area.

FLASHING. This is a defect in the image area of the monocular. The image appears to flicker or flash.

FLICKERING. See "flashing".

GAIN. This is the number of times a night vision device amplifies light input.

IMAGE INTENSIFIER. An electro-optical device that detects and amplifies ambient light to produce a visual image.

INFINITY FOCUS. Adjustment of the objective lens so that a distant object forms the sharpest image.

INTERMITTENT OPERATION. This is a defect in the image area of the monocular. See "flashing".

IR SOURCE. This is an IR Light Emitting Diode (LED). When turned on, the IR source provides additional illumination to enhance existing light conditions used only for performing nearby tasks.

LIGHT INTERFERENCE FILTER (LIF). This is a light protection filter for the monocular. Use of this filter will result in a slight reduction in system gain.

MICROCHANNEL PLATE. A current-multiplying optical disk that intensifies the electron image produced by the photocathode.

NOTE. Essential information of special importance, interest, or aid in job performance.

PHOTOCATHODE. The input optic of an image intensifier that absorbs light energy and in turn releases electrical energy in the form of an electron image.

SCINTILLATION. A faint, random, sparkling effect throughout the image area. Scintillation is a normal characteristic of the image intensifier.

SHADING. The viewed image should be a full circle. If shading is present, you will not see a fully circular image.

WARNING. Conditions, practices, or procedures that must be observed to avoid personal injury or loss of life.

EQUIPMENT DESCRIPTION

1.2.1. EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES

The MUNVM is a hand-held, headmounted, helmet mounted, or weapon mounted night vision system that enables walking, weapon firing, short-range surveillance, map reading, vehicle maintenance, and administering first aid in both moonlight and starlight. Each unit allows for vertical adjustment, fore-and-aft adjustment, objective lens focus and eyepiece focus. The monocular is also equipped with an IR source and a low battery indicator. The PVS-14 model is equipped with a manual gain control.

1.2.2. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

The NVMPS includes the items shown in Figures 1.1, 1.2, and 1.3. The major components are the headmount, helmet mount, monocular, carrying case, and the shipping and storage case.

a. Monocular
The monocular consists of various components such as an objective lens, an image intensifier, an eyepiece lens and a battery cap.

The monocular also uses the accessories listed below:

• Demist Shield - used to prevent the eyepiece lenses from becoming fogged.
• Light Interference Filter (LIF) - used at all times. The container is also the wrench for removing and replacing the LIF.
• Sacrificial Window - supplied to protect the objective lens during operation in adverse conditions.
• Compass - enables the operator to see azimuth readings in the monocular.
• Tethering Cord - enables the user to attach the compass or 3X magnifier to a button hole or belt loop to guard against dropping or losing these items.
• 3X Magnifier - an additional authorized item used to extend observation range.

b. Headmount - secures the monocular to the operator's head for night viewing and provides freehand support. The thin browpad comes attached to the headmount; the thick and medium browpads are stored in the carrying case.

c. Helmet Mount - secures the monocular to the PASGT helmet. The new helmet mount is made of ruggedized metal; the old one is made of plastic.

d. Headmount/Helmet Mount Adapter - attached to the monocular to allow use with the headmount or helmet mount, and allows left or right eye mounting.

e. Weapon Mount - adapts the monocular to the receiver rail as configured for the modular weapon system kit.

f. Carrying Case - provided for transportation and protection of the monocular, headmount, battery and accessories.

g. Shipping and Storage Case - the NVMPS is supplied in a shipping and storage case.

1.2.3. EQUIPMENT DATA

Table 1.2. Operator Adjustment Limits
Diopter Focus	+2 to -6 diopters
Objective Focus	25 cm to infinity

Table 1.3. Electrical Data
Power Source	Battery (1.5 Vdc max each)
Battery Requirements	1 AA alkaline or 1 AA 1.5 Vdc Lithium L91

Table 1.4. Mechanical Data
Shipping and Storage Case	Approx. 14" x 9.5" x 8", weight 2.4 lbs.
Carrying Case	Approx. 14" x 8"
Monocular	14 ounces

NOTE:
Weight of the monocular does not include accessories.

Table 1.5. Optical Data
Magnification	1.0X (3X with 3X magnifier)
Field-of-View	40 (13 with 3X magnifier)
Diopter Focus	+2 to -6 diopters
Objective Focus	25 cm (9.8") to infinity

Table 1.6. Environmental Data
Monocular Operating Temperature	-51°C to +49°C
Monocular Storage Temperature	-51°C to +85°C
Illumination Required	Overcast starlight to moonlight

PRINCIPLES OF OPERATION

1.3.1. MECHANICAL FUNCTIONS

The mechanical functions of the NVMPS allow for differences in the physical features of individual operators and provide for operating the system. These functions include the power switch, eye relief adjustment, diopter adjustment, gain control, and objective focus.

NOTE:
The gain control is not present in 6015 or PVS-14NG model.

1.3.2. OPTICAL FUNCTIONS

The optical functions include an objective lens, image intensifier and eyepiece lens. The objective lens collects light reflected from the night scene by the moon, stars, or night sky, inverts the image and focuses that image on the image intensifier. The image intensifier converts the captured light into a visible image and reinverts the image which can then be viewed through the eyepiece lens.

1.3.3. ELECTRONIC CIRCUIT FUNCTION

The electronic circuit regulates the direct current voltage from the battery to the image intensifier and IR source as required. It also monitors the output voltage of the battery and turns on a low-battery indicator when the available battery voltage is 1.9-2.1 Vdc.

• Power Source - The electronic circuit is powered by one battery.
• High Light Cut-Off - The monocular will automatically cut off after 70 ±30 seconds of operation in daylight or bright room light. To turn the monocular back on, turn the power switch to `RESET/OFF` and then to `ON` again.

OPERATOR CONTROLS AND INDICATORS

NOTE:
The MUNVM is a precision electro-optical instrument, so handle it carefully. If the equipment fails to operate, refer to the Troubleshooting Procedures in Chapter 3.

2.1.1. OPERATOR CONTROLS AND INDICATORS

The MUNVM is designed to adjust for different users and corrects for most differences in eyesight. The controls and indicators for the MUNVM are shown in Figure 2.1 and are described in Table 2.1.

NOTE:
The gain control is not present in 6015 or PVS-14NG model. NOTE:
Low battery indicator and IR source ON indicator are visible in the eyepiece lens.

Controls and Indicators	Functions
Power Switch	Controls monocular and IR source on or off.
RESET/OFF	Same as system off. Also resets monocular after high light cut-off.
ON	Monocular activated.
IR/PULL	Turn the knob clockwise to momentarily activate the IR source. Pull and turn the knob clockwise from the ON position to continuously activate the IR source.
Low Battery Indicator	When blinking, it indicates a low battery condition with less than 30 minutes of battery life remaining.
IR Source On Indicator	Indicates that the IR source is operating.
Gain Control (PVS-14 only)	Adjusts system gain from a minimum value of approximately 25 to a maximum value greater than 3,000.
Objective Focus	Focuses objective lens. Adjusts for sharpest image of viewed object.
Diopter Adjustment	Focuses eyepiece lens for use without glasses. Adjust for sharpest image of intensifier screen.
Eye Relief Adjustment	Adjusts the distance between your eye and the monocular.
Latch	Used for separation of monocular from headmount/helmet mount adapter.
Battery Polarity Indicators	Shows the proper orientation of the battery.

CAUTION:
Do not use excessive force to place the power switch into the momentary IR position.

PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

2.2.1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES TABLE

To ensure the readiness of the MUNVM, perform the preventive maintenance procedures in accordance with Table 2.2 prior to each mission. Preventive maintenance procedures include inspection, cleaning, and performance of the checkout procedures.

Always observe the warnings and cautions appearing in the table. If checks show faults listed as mission-capability failures, do not operate the equipment.

NOTE:
Damaged accessory items such as the sacrificial window, demist shield, and compass do not cause the entire end item to be not fully mission capable. However, the damaged item should be replaced as soon as practical to restore full capability of the system.

Item	Interval	Location / Check / Service	Procedure	Not Fully Mission Capable If
1	Before	Carrying case	Open carrying case and check the inventory items.
2	Before / After	Monocular optical surfaces	Inspect all lenses, including objective, eyepiece, IR lens and high light cut-off window, for dirt, fingerprints, chips, or cracks. Clean and dry lenses with water and lens tissue if necessary.	Scratches or cracks hinder vision with monocular turned on.
3	Before / After	Battery cap housing	Inspect external surfaces for cracks or damage. Inspect the battery compartment and verify the battery cap, contacts, and O-ring are present and serviceable.	Battery housing is damaged, cap is missing, contacts are damaged or corroded, or O-ring is missing.
3 cont.	Before / After	Battery cap housing cont.	Remove battery and turn the power switch from RESET/OFF to ON to IR/PULL. Each position should have a definite stopping point. Install battery, check IR source functions, and check high light cut-off.	Knob is broken or missing.
4	Before / After	Monocular	Inspect for cracks or damage. Scratches, cracks, chips and gouges are acceptable if operation is not affected. Check gain control for free movement when present.	Cracks or damage affect operation; gain control does not move or vary gain.
5	Before / After	Eyepiece lens	Rotate diopter adjustment to make sure the eyepiece lens moves freely and is not loose.	Binding, not moving freely, or too loose.
6	Before / After	Eyecup	Inspect for dirt, dust, cracking, tears, bent or broken retaining parts. Clean with water if necessary.	Damage interferes with installation or vision.
7	Before / After	Eyeguard	Inspect for dirt, dust, cracking, tears, bent or broken retaining parts. Clean with water if necessary.	Damage interferes with installation or vision.
8	Before / After	Objective lens	Rotate focus ring to ensure free movement. Inspect for chips, cracks and dents. Check infinity focus locking ring.	Focus ring binds, lens damage interferes with installation of LIF or focus.
9	Before / After	Neck cord and objective lens cap	Inspect for cuts, tears, cracks, loose ends or damage. Re-tie ends if necessary.
10	Before / After	Viewed image	Operator may use the TS-4348/UV to check resolution. Inspect for operational defects per paragraph 2.2.3.	Flickering, flashing, edge glow, or shading is observed.
11	Before / After	Headmount straps and pads	Inspect for cuts, tears, fraying, holes, cracks or defective fasteners.	Damage causes straps or pads to be unserviceable.
12	Before / After	Headmount socket	Inspect for dirt, dust or corrosion. Insert monocular latch into socket to verify secure attachment. Clean with water if necessary.	Latch will not lock or is too loose.
13	Before / After	Eye relief adjustment	Press the eye relief adjustment and check for free motion. Inspect for damage.	Binding, damaged, or non-operational slide mechanism.
14	Before / After	Helmet mount straps	Inspect for cuts, tears, fraying, holes, cracks or defective fasteners.	Damage causes straps to be unserviceable.
15	Before / After	Helmet mount socket	Inspect for dirt, dust or corrosion. Insert monocular latch into socket to verify secure attachment. Clean with water if necessary.	Latch will not lock or is too loose.
16	Before / After	Fore-and-aft adjustment	Press the two side buttons on the plastic mount or press the side lever on the metal mount and check for free motion. Inspect for damage.	Binding, damaged, or non-operational slide mechanism.
17	Before / After	Mounting adapters	Inspect for dirt, dust or corrosion. Insert into headmount or helmet mount socket to verify secure attachment.	Will not latch securely.
18	Before / After	Weapon mount	Inspect for dirt, dust or corrosion and verify it mounts securely to the monocular and rail.	Will not mount to monocular or rail.
19	Before / After	Demist shield	Inspect for dirt, dust, scratches or damage. Clean only when dry and only with dry lens paper.	Damage or scratches hinder vision with monocular on.
20	Before / After	LIF	Inspect for dirt, dust, scratches or damage. Clean per paragraph 3.3.1 if necessary.	Damage or scratches hinder vision with monocular on.
21	Before / After	Sacrificial window	Inspect for dirt, dust, scratches or damage. Clean per paragraph 3.3.1 if necessary.	Damage or scratches hinder vision with monocular on.
22	Before / After	Compass	Inspect for dirt, dust, scratches or damage. Clean with water and dry with lens tissue if necessary. Install compass and verify it is visible when illumination button is pressed.	Compass is damaged or not visible.
23	Before / After	3X magnifier	Inspect optical surface for dirt, dust, scratches or cracks.	Damage or scratches hinder vision.
24	Before / After	Carrying case	Remove all items and shake out loose dirt or foreign material. Inspect for tears, cuts, excess wear, or damage to mounting clips.
25	Before / After	Shoulder strap	Inspect for cuts, tears, or excess wear of damaged clips.

2.2.2. RESOLUTION CHECK USING THE TS-4348/UV TEST SET

NOTE:
The TS-4348/UV Test Set can be used by the operator to check the resolution of a monocular at any time. NOTE:
The TS-4348/UV Test Set can be used by Direct Support/Intermediate Level to perform the resolution testing 180 Day Service. If a system fails it must be tested on the TS-3895A/UV Test Set. NOTE:
Verify the resolution of the monocular using the TS-4348/UV Test Set at every opportunity. The resolution cannot be accurately measured without the test set.

The following procedures are designed to check the performance of the image intensifier.

a. Setup - Before using the TS-4348/UV Test Set, set up and familiarize yourself with its operation and the associated warnings and cautions.

NOTE:
The resolution test must be performed in a darkened area. Your eyes must be dark-adapted to perform this test. NOTE:
Expect cosmetic blemishes, such as chicken wire, black spots, and fixed-pattern noise, to stand out while viewing through the TS-4348/UV Test Set when it is on the high light level. This is acceptable. NOTE:
The rejection of any MUNVM for cosmetic defects must be based on an outdoor evaluation and not the TS-4348/UV Test Set.

b. Low Light and High Light Resolution Test Procedure

1. Place the HIGH/LOW switch on the test set to the LOW position.
2. Install the LIF.
3. Turn off the room light and let your eyes adjust to the dark.
4. Turn on the test set by setting the `II/OFF/III` switch to `III`.
5. Turn on the monocular and insert it into the test port on the test set.
6. Look through the monocular and view the projected pattern. If necessary, focus the eyepiece lens and then the objective lens to obtain the sharpest image.
7. The MUNVM monocular must be able to resolve Group 2, Element 2 under low light conditions to pass the test.
8. Flip the HIGH/LOW switch to the HIGH position.
9. Again, look through the monocular and view the projected pattern. If necessary, refocus the objective lens and then the eyepiece lens.
10. The MUNVM must be able to resolve Group 3, Element 5 under high light conditions to pass the test.
11. Look for flashing, flickering, or other unstable behavior of the image intensifier. Also check for other operational defects.

NOTE:
For a pattern to be resolvable, three vertical bars and three horizontal bars must be visible. NOTE:
When using the TS-4348/UV Test Set, you are not viewing the entire image intensifier. Therefore, operational and cosmetic inspections must be done without the test set as specified in paragraph 2.2.3.

2.2.3. INSPECTION CRITERIA FOR PROPER IMAGE INTENSIFIER OPERATION

CAUTION:
Perform the following inspection in the dark.

Attach the monocular to the headmount and turn the power switch to the ON position. Look through the monocular and view the image.

There are two groups of defects you may encounter: operational defects and cosmetic blemishes. Operational defects are an immediate cause to reject the MUNVM. Cosmetic blemishes are not a cause for rejection unless they become severe enough to interfere with mission performance.

Operational defects include shading, edge glow, flashing, flickering, and intermittent operation.

Shading - If shading is present, you will not see a fully circular image. Return the MUNVM to the maintainer.

NOTE:
Make sure the shading is not the result of improper eye-relief adjustment.

Edge Glow - Block out all light by cupping a hand over the objective lens. If edge glow remains visible, return the MUNVM to the maintainer.

Bright Spots and Emission Points - Bright spots usually go away when the light is blocked out. Emission points do not.

Fixed-Pattern Noise - A faint hexagonal pattern that can appear at high light levels.

Chicken Wire - An irregular pattern of dark thin lines in the field-of-view.

ASSEMBLY AND PREPARATION FOR USE

2.3.1. UNPACKING

CAUTION:
Relieve air pressure inside shipping and storage case by pressing in on opposite sides of the case before releasing latches.

1. Release the latch securing the top of the shipping and storage case and open it.
2. Check contents for completeness.
3. Remove the carrying case, open it, remove the MUNVM, and check contents for completeness.
4. Inspect the monocular for obvious evidence of damage to optical surfaces, body, eyecup, eyeguard, power switch, battery cap, etc.

2.3.2. INSTALLATION OF BATTERY

CAUTION:
To protect the image intensifier, keep the objective lens cap on when the monocular is not in use or when using the monocular in daylight conditions.

The MUNVM operates with one AA battery. Battery is not supplied with the MUNVM and must be obtained separately.

At operating temperatures below -20°C (-4°F), alkaline batteries are not recommended. Lithium-iron disulfide L91 1.5V AA batteries should be used below -20°C (-4°F).

Battery Type	Temperature	Negligible IR Source Usage	IR Source Usage 10% of the Time
AA Alkaline	21°C (70°F)	60 Hrs	55 Hrs
AA Lithium L91	21°C (70°F)	70 Hrs	65 Hrs
AA Alkaline	-20°C (-4°F)	12 Hrs	10 Hrs
AA Lithium L91	-20°C (-4°F)	60 Hrs	55 Hrs

CAUTION:
Make certain the power switch is in the OFF position before installing the battery.

1. Unscrew the battery cap.
2. Observe polarity, as indicated on the side of the battery compartment, and insert the battery.
3. Replace the battery cap and screw it hand tight.

2.3.3. INSTALLATION OF EYECUP OR EYEGUARD

1. Carefully press the eyecup or eyeguard over the end of the eyepiece lens.
2. Rotate it into the proper viewing position and adjust for best fit.

2.3.4. INSTALLATION OF DEMIST SHIELD

CAUTION:
If the demist shield is wiped while wet or with wet lens paper, you will damage the coating. NOTE:
If inclement operating conditions are expected, install the demist shield to minimize eyepiece lens fog prior to mission execution.

1. Carefully remove the eyecup or eyeguard.
2. Carefully press the demist shield onto the eyepiece.
3. Replace the eyecup or eyeguard.

2.3.5. INSTALLATION OF SACRIFICIAL WINDOW

CAUTION:
If adverse operating conditions such as dust or sand are expected, attach the sacrificial window to protect the objective lens from scratches or other damage.

1. If the objective lens cap is in place, remove it.
2. Carefully push the sacrificial window onto the objective lens until it stops. Turn clockwise until it snaps into place.

2.3.6. INSTALLATION OF LIF

1. Remove the container/wrench from the carrying case pouch.
2. If the objective lens cap or sacrificial window is on the objective lens, remove it.
3. Carefully open the container/wrench and remove the LIF.
4. Hold the LIF by the ridged end and thread it clockwise into the end of the objective lens.
5. Using the ridged side of the container/wrench as a wrench, engage the ridges and tighten the LIF hand tight.
6. Place the empty container/wrench back into the carrying case pouch.
7. Install the objective lens cap or the sacrificial window onto the end of the objective lens and cover the LIF.

CAUTION:
Be careful not to touch glass surfaces. If you get fingerprints or contamination on the glass surfaces, use lens paper to clean the LIF. If moisture is needed, use your breath to mist the surface of the glass. CAUTION:
Do not overtighten the LIF into the objective lens. NOTE:
The LIF must be used at all times unless directed by the unit commander to remove it based on laser threat assessment.

2.3.7. INSTALLATION AND ADJUSTMENT OF HEADMOUNT

NOTE:
Do not don the headmount while the monocular is attached.

1. Loosen the four ends of the chinstrap approximately two inches from the sliding bar buckles.
2. Snap the front and rear snaps in place.
3. If the headmount is too loose, replace the thin browpad with the medium or thick browpad.
4. With both hands grasp the neck pad and pull the harness over your head and the neck pad down to the back of your neck.
5. Holding the chin cup in position, adjust both sides of the chinstrap until you feel light pressure against your chin. Do not tighten yet.
6. Maintain the position of the chin cup and remove any slack from the chinstrap.
7. Ensure that the cross-strap is not twisted and remove slack by adjusting the vertical adjustment at the neck pad.
8. Adjust the chinstrap and vertical adjustment until the chin cup and headband are in a comfortable but firm position.
9. Install the headmount/helmet mount adapter.

NOTE:
After installing the monocular, minor strap adjustments may be necessary to achieve comfort.

2.3.8. INSTALLATION OF HEADMOUNT/HELMET MOUNT ADAPTER

Install the headmount/helmet mount adapter into the monocular by aligning the thumbscrew to the hole and tightening it. Make sure the alignment boss on the adapter fits into the groove on the monocular.

2.3.9. INSTALLATION OF HELMET MOUNT TO HELMET

1. Remove the helmet mount from the carrying case.
2. Press the release to remove the mount from the helmet mount bracket.
3. Make sure the strap is laced onto the helmet mount bracket as shown.
4. With catch in the forward most position, place the strap over the top of the helmet center.
5. Hook the rear bracket on the center of the back of the helmet and lay the strap with helmet mount bracket over the top of the helmet.
6. Hook the helmet mount bracket in the center of the front lip of the helmet and hold it in place.
7. With the buckle lever open, take up the slack in the strap using the catch. Close the buckle lever.
8. Disengage the nape strap latch on the left side of the nape strap.
9. Don the helmet. Do not fasten the helmet chinstrap.
10. Engage the nape strap at the latch and tension it for a stable fit. Then install and tension the helmet chinstrap.
11. Insert the top edge of the mount under the keeper on the helmet mount bracket and rotate downward until the latch engages.

2.3.10. INSTALLATION OF HEADMOUNT WITH PROTECTIVE MASK

1. Place protective mask on your head per the instructions provided with the mask.
2. Install the headmount per the instructions above.

WARNING:
When installing the headmount over the protective mask, be careful not to break the protective mask seal around your face. NOTE:
It may be necessary to remove the browpad when wearing the headmount over a protective mask.

2.3.11. INSTALLATION OF WEAPON MOUNT

CAUTION:
The MUNVM is not a weapon sight, however, it can be used in conjunction with a collimated dot sight or laser aiming device. NOTE:
It is recommended that the eyecup be replaced with the eyeguard during weapon mounted use.

1. Orient the monocular and weapon mount as shown, aligning the weapon mount boss with the monocular groove.
2. Screw in the thumbscrew to secure the monocular to the weapon mount.
3. Loosen the clamping knob on the weapon mount. Position the mount on the weapon's mounting rail, then tighten the clamping knob.
4. Check the position of the monocular by holding the weapon in your normal firing position and adjust fore/aft position if necessary.

NOTE:
There is a ratchet in the weapon mount that prevents overtightening of the clamp. Turn until the knob clicks.

2.3.12. INSTALLATION OF COMPASS

CAUTION:
Use of the compass with the plastic headmount or plastic helmet mount will result in inaccurate compass readings. The magnet cannot be removed from these mounts. CAUTION:
The magnet must be removed from the ruggedized metal helmet mount before installation of the compass. NOTE:
Prepare the monocular for operation and leave the LIF in place when installing the compass.

1. If the sacrificial window or objective lens cap is in place, remove it.
2. Turn monocular on.
3. Rotate the objective lens focus completely counterclockwise while looking through the monocular.
4. Press the compass onto the objective lens at an angle and slowly turn it counterclockwise until it is in the vertical position with illumination button pointing down.
5. Ensure that the compass fits tightly to the objective lens.

NOTE:
The O-ring must be in place in the compass in order for the compass to fit properly.

2.3.13. INSTALLATION OF 3X MAGNIFIER

The 3X magnifier can be threaded directly into the objective lens with the LIF removed. It can also be threaded into the focus ring adapter and slipped on over the end of the objective lens with the LIF installed.

OPERATING PROCEDURES

This section contains operating procedures for using the NVMPS as hand-held, head mounted, helmet mounted or weapon mounted monocular. Prior to operating the monocular, make certain that all assembly and preparation steps have been read and performed.

2.4.1. HAND-HELD OPERATION

Operate the monocular only under darkened conditions or use the objective lens cap to cover the objective lens for daylight conditions.

NOTE:
When using the monocular without a mounting device, make sure to place the neck cord around your neck.

1. Ensure that the battery is installed.
2. Turn the power switch to ON.
3. Rotate the diopter adjustment for the clearest view of the image intensifier screen.
4. Focus the objective lens while observing an object until the sharpest image is obtained.

2.4.2. HEAD MOUNTED OPERATION

CAUTION:
Operate the monocular only under darkened conditions or use the lens cap to cover the objective lens for daylight conditions.

1. Ensure that battery is installed.
2. Don the headmount.
3. Align the headmount/helmet mount adapter latch to the headmount socket. Press and hold down the latch lever while installing the monocular into the socket.
4. Set eye relief by depressing the eye relief adjustment and moving the monocular toward your non-dominant eye until the eyecup comfortably seals around the eye.
5. Turn the monocular ON.
6. Readjust the vertical adjustment of the headmount until the monocular is properly aligned with your eye.
7. Rotate the diopter adjustment for the clearest view of the image intensifier screen.
8. Adjust the eye relief distance by pressing the eye relief adjustment and sliding monocular fore or aft to obtain a full field-of-view. Reset the diopter adjustment for best image.
9. Adjust the objective lens focus while observing an object until the sharpest image is obtained.

NOTE:
To make it easier to align the monocular, eyecup, and eyepiece lens to the eye, depress the eye relief adjustment and slide the headmount socket all the way forward before attaching the monocular. NOTE:
The sharpest image will be observed only when the objective lens and eyepiece lens are properly focused. NOTE:
Any readjustment of eye relief requires readjustment of the diopter.

2.4.3. HELMET MOUNTED OPERATION

CAUTION:
Take some precaution when using or handling the helmet mount. Most damage occurs when the helmet mount is left on the helmet when not needed for immediate use. CAUTION:
Do not use excessive force when changing the up/down position of the MUNVM.
Do not drop or throw the helmet with the helmet mount attached to it.
With the monocular in the flipped up position, do not flick the monocular down by shaking the helmet.
All other services require returning the helmet and the helmet mount to unit maintenance. NOTE:
The helmet mount provides two positions for the user to position the MUNVM: flipped down for viewing and flipped up when it is not needed for immediate use. NOTE:
The headmount/helmet mount adapter allows the MUNVM to be rotated from the left to the right eye or vice versa.

1. Ensure that the battery is installed.
2. Don the helmet mount.
3. Place the monocular in the socket of the helmet mount. Set eye relief by depressing the side buttons on the plastic mount or side lever on the metal mount and moving the monocular fore or aft until the eyecup comfortably seals around the eye.
4. Turn power switch to ON. Adjust tilt using the tilt adjustment lock knob or tilt adjustment lever until you obtain a comfortable viewing angle.
5. Rotate the diopter adjustment for the clearest view of the image intensifier screen.
6. Adjust the eye relief distance again if needed and reset the diopter adjustment.
7. Adjust the objective lens focus while observing an object until the sharpest image is obtained.
8. To flip up, grasp the helmet tilt and flip-up assembly and rotate upward and rearward until the latch is firmly engaged.
9. To flip down, grasp the helmet tilt and flip-up assembly and rotate downward and forward until the latch is firmly engaged.
10. Turn the power switch to ON to resume viewing.

NOTE:
The sharpest image will be observed only when the objective lens and eyepiece lens are properly focused. NOTE:
Any readjustment of eye relief requires readjustment of the diopter. WARNING:
The monocular will not be turned off automatically when flipped up. The monocular must be turned off by the power switch.

2.4.4. WEAPON MOUNTED OPERATION

NOTE:
The MUNVM can be used in conjunction with a collimated dot aiming device mounted on the forward mounting rail. The brightness control for the aiming device should be set at or near its minimum setting.

1. Ensure that the battery is installed.
2. Assemble the weapon mount to the monocular.
3. Mount the monocular with adapter onto the receiver rail.
4. Rotate the diopter adjustment for the clearest view of the image intensifier screen.
5. Adjust the objective lens focus while observing an object until the sharpest image is obtained.

2.4.5. IR SOURCE OPERATIONS

WARNING:
The IR source is a light that is invisible to the unaided eye for use during conditions of extreme darkness. However, the light from the IR source can be detected by the enemy using night vision devices. NOTE:
The purpose of the IR source is for viewing at close distances up to 3 meters when additional illumination is needed.

1. Pull the power switch knob out and rotate clockwise to the IR position. Observe that a red light appears in the eyepiece.
2. For momentary IR, turn the power switch clockwise without pulling past the ON position.

2.4.6. OPERATION WITH COMPASS

WARNING:
The compass illuminator can be seen by others using night vision devices. CAUTION:
You will get inaccurate readings when using the compass on any head or helmet mount with the magnet still installed. NOTE:
The compass reading is magnetic north, not true north. NOTE:
The objective lens focus can be fine tuned after installation, but to obtain an accurate reading, the compass must be vertical.

1. Install the compass.
2. If necessary, adjust the objective lens focus slightly by gripping the compass and turning clockwise.
3. To view the compass through the monocular, grip the compass with index finger on top and thumb on the illumination button on bottom. Press slowly until proper brightness is obtained.
4. The compass readings should change when you move your head from side to side. Rotate or tap the compass slightly to ensure it is operating correctly.
5. The tick mark closest to the center of the lighted display is the compass bearing.

NOTE:
Increase brightness slowly. Excessive brightness may burn a temporary image into the image intensifier. NOTE:
The monocular must be focused at or near infinity for proper compass operation.

2.4.7. OPERATION WITH 3X MAGNIFIER

NOTE:
The mated 3X magnifier and objective lens will turn as a unit to allow focusing.

1. Install the 3X magnifier.
2. Grasp the 3X magnifier and focus while observing an object until the sharpest image is obtained.

2.4.8. OPERATION WITH GAIN CONTROL (PVS-14 ONLY)

Turn the gain control to balance the illumination input to the eye.

2.4.9. PREPARATION FOR STORAGE

1. Turn the monocular power switch to the OFF position.
2. Remove the monocular from the headmount, helmet mount or weapon and remove the weapon mount from the monocular.
3. Remove battery cap and remove battery.
4. Inspect the battery housing for corrosion or moisture. Clean and dry if necessary.
5. Replace the battery cap.
6. Remove the demist shield or sacrificial window if installed. Install objective lens cap.
7. Place accessories back in the carrying case as shown in Figure 1.1.
8. Place the monocular into the shallow pocket of the carrying case.
9. Place the carrying case into the shipping and storage case, close and latch it.
10. Return to storage area.

WARNING:
Do not carry batteries in pockets containing metal objects such as coins, keys, etc. Metal objects can cause the batteries to short circuit and become very hot. NOTE:
Prior to placing MUNVM into carrying case, ensure MUNVM and case are free of dirt, dust, and moisture. NOTE:
The monocular and helmet mount should not be left on the helmet when the helmet is removed.

OPERATION UNDER UNUSUAL CONDITIONS

2.5.1. OPERATION IN DUSTY OR SANDY AREAS

CAUTION:
Operation in dusty or sandy areas can pit and scratch the optical elements and damage the mechanical components unless the precautions below are observed.

1. Ensure that the sacrificial window is in place over the LIF.
2. Avoid pointing the monocular into the wind unless necessary for operation.
3. Keep the carrying case closed unless removing or replacing items.
4. Ensure that all dust and sand is removed from the MUNVM and carrying case after operation.

2.5.2. OPERATION IN RAINY OR HUMID CONDITIONS

CAUTION:
Operation in rainy or humid conditions can cause corrosion and deterioration of the MUNVM unless the precautions below are observed.

1. Install the demist shield.
2. Keep the carrying case and shipping and storage case closed unless removing or replacing items.
3. Dry the monocular, mounts, and accessories after exposure to rain or high humidity and before storage.
4. Do not store the monocular in a wet carrying case or wet shipping and storage case.

2.5.3. OPERATION IN SALT WATER AREAS

After exposure to salt water, clean the MUNVM.

2.5.4. OPERATION IN NBC ENVIRONMENTS

WARNING:
Do not use contaminated eyecup or eyeguard. They must be replaced.

1. Wear a protective mask while using the MUNVM after decontamination.
2. Do not use DS-2 for decontaminating the MUNVM. Use 5% sodium hypochlorite and rinse with hot 158°F soapy water.

2.5.5. OPERATION IN LASER THREAT ENVIRONMENTS

NOTE:
The LIF is a light-protection filter and must be used at all times unless directed otherwise by the unit commander.

Install the LIF as described in paragraph 2.3.6.

MAINTENANCE INSTRUCTIONS

3.1. LUBRICATION INSTRUCTIONS

No lubrication is required.

3.2. TROUBLESHOOTING PROCEDURES

3.2.1. TROUBLESHOOTING

Table 3.1 lists common malfunctions that you may find with your equipment. Perform the tests, inspections and corrective actions in the order they appear in the table.

Malfunction	Test or Inspection	Corrective Action
1. Monocular fails to activate	Visual. Turn power switch to OFF and then ON. Check for defective, missing or improperly installed battery.	Replace battery or install correctly.
2. IR source fails to activate	In a dark location with system turned on, activate IR source and visually check operation.	If IR source still fails to activate, refer to higher level of maintenance.
3. IR source indicator fails to activate	Visual.	Refer to higher level of maintenance.
4. Poor image quality	Check objective lens or eyepiece lens focus. Check for fogging or dirt.	Refocus. Clean lens surfaces per paragraph 3.3.1.
5. Light visible around eyecup	Check eye relief distance. Check eyecup for resiliency.	Readjust eye relief. If eyecup is defective, refer to higher level of maintenance.
6. Diopter adjustment cannot be made	Check whether the diopter adjustment is bent or broken.	If damaged, refer to higher level of maintenance.
7. Battery cap difficult to open	Inspect for presence of O-ring. Check for damaged battery cap.	If O-ring is missing or cap is damaged, refer to higher level of maintenance.
8. Head straps cannot be tightened	Check for defective buckles, fasteners or straps.	If damaged, refer to higher level of maintenance.
9. Headmount or helmet mount socket and adapter latch does not catch	Check socket or latch for dirt and damage.	Clean socket and latch. If damaged, return components to higher level of maintenance.
10. Helmet mount will not tighten to helmet	Inspect mounting hardware for damage.	If damaged, refer to higher level of maintenance.
11. LIF will not thread in or obstructs view	Check for dirt in threads. Check for damaged LIF.	Clean threads. If damaged, refer to higher level of maintenance.
12. IR source or related control damaged	Visual.	Refer to higher level of maintenance.
13. Compass will not stay on the goggles	Visual.	Refer to higher level of maintenance.
14. Compass display is not clear	Make sure the monocular is focused for infinity.	If still unclear, refer to higher level of maintenance.
15. Monocular does not cut off when exposed to high light	Place objective lens cap on the objective lens. Turn monocular on and observe that it cuts off within 70 ±30 seconds. Turn it off and on to reenergize.	If damaged, refer to higher level of maintenance.

3.3. OPERATOR'S MAINTENANCE PROCEDURES

3.3.1. CLEANING THE MUNVM

CAUTION:
The monocular is a precision electro-optical instrument and must be handled carefully.
Do not scratch the external lens surfaces or touch them with your fingers.
Wiping the demist shield with lens paper while wet can damage the coating.

Clean the monocular with water if necessary and dry thoroughly. Clean lenses with lens paper and water if necessary, except for the demist shield.

3.3.2. HEADMOUNT MAINTENANCE

a. Browpad Replacement

1. Firmly grasp the headmount and remove the old browpad.
2. Gently press on the new browpad. Smooth out any wrinkles.

b. Neck Pad Reinstallation

1. Lift the upper headband strap retention tab allowing the neck pad strap to be inserted underneath.
2. Slip the neck pad strap all the way under the upper strap retention tab and then pull the lower part of the neck pad strap under the lower strap retention tab.
3. Repeat for the other side if necessary.

c. Lacing the Sliding Bar Buckles

1. Thread the strap from the inside of the buckle over the moveable sliding bar. Thread it back through the buckle under the moveable sliding bar and over the serrated part.
2. Pull the strap through the buckle and tighten as necessary.
3. Repeat for other straps and buckles that may have come undone.

3.3.3. NECK CORD MAINTENANCE

If the neck cord is loose, re-tie it. If broken or severely frayed, install a new cord by inserting the ends through monocular holes from the rear, threading the right end through the objective lens cap hole, and tying a knot in each end.

APPENDIX A

COMPONENTS OF END ITEM (COEI) AND BASIC ISSUE ITEMS (BII) LISTS

A1. SCOPE

This appendix lists COEI and BII for the PVS-14/6015 to help you inventory items for safe and efficient operation of the equipment.

A2. GENERAL

The COEI and BII information is divided into components of end item and basic issue items. These are required to place the PVS-14/6015 in operation, operate it, and do emergency repairs.

A3. EXPLANATION OF COLUMNS IN THE COEI LIST AND BII LIST

Column (1) gives the illustration number. Column (2) gives the national stock number. Column (3) gives description, CAGEC and part number. Column (4) gives usable on code when applicable. Column (5) indicates unit of measure. Column (6) indicates quantity required.

Illus. No.	National Stock Number	Description, CAGEC and Part Number	U/M	Qty Rqr
1		Monocular Assembly, A5236540	AE	1
2	5855-01-246-8271	Window, Sacrificial, A3144264	AE	1
3	5855-01-444-1230	Lens, Infrared Receiver, A5235653	AE	1
4	5855-01-973-1410	Filter, Infrared Light, 5009737	AE	1
5	5855-01-642-8266	Headset Assembly, A3144268	AE	1
6	5855-10-297-7847	Browpad Assy, Thick, A3144436	AE	1
7	5855-10-553-8600	Browpad Assy, Medium, A3144435	AE	1
8	5855-10-553-8599	Browpad Assy, Thin, A3144280	AE	1
9	5965-10-444-1216	Adapter, Headset, A5236547	AE	1
10	5340-10-446-8588	Bracket, Mounting, A5236548	AE	1
11	5855-10-754-2953 / 5855-10-441-0401	Mount, Viewer, A5236568 / A6230927	AE	1
12	5855-10-381-6052	Compass Assembly, A3187430	AE	1
13	5660-10-444-1229	Eyeguard, Optical Instrument, A5236545	AE	1
14	5340-10-451-7773	Clip, Retaining, A6230903	AE	1
15	5855-10-893-4248	Case, Infrared Equipment, A3187392	AE	1
16	5340-10-250-2431	Strapping, A3144267	AE	1
17	5340-10-397-6608	Cap, Protective, Dust, A3144318	AE	1
18	2040-10-446-9087	Cord, Fibrous, A3144306	AE	1
19		Operator's Manual, TM 11-5855-306-10	AE	1
20		Case, Shipping & Storage, A6234650	AE	1

APPENDIX B

ADDITIONAL AUTHORIZATION LIST (AAL)

B1. SCOPE

This appendix lists additional items authorized for support of the PVS-14/6015.

B2. GENERAL

These items do not have to accompany the PVS-14/6015 and do not have to be turned in with it. They are authorized by CTA, MTOE, TDA, or JTA.

B3. EXPLANATION OF COLUMNS IN THE AAL

Column (1) is the national stock number. Column (2) is description, CAGEC and part number. Column (3) is usable on code. Column (4) is unit of measure. Column (5) is quantity recommended.

National Stock Number	Description, CAGEC and Part Number	U/M	Qty Recm
6135-00-985-7845	Battery, Nonrechargeable, (AA), 1.5 Vdc, BA-3058/U	AE	2
6135-01-333-6101	Battery, Nonrechargeable, (AA), 1.5 Vdc, L91	AE	2
6625-01-323-9584	Test Set, Electronic System, TS-4348/UV, A3137975	AE	1
5855-10-423-0817	Magnifier Lens Assembly, A5235691	AE	1

APPENDIX C

EXPENDABLE AND DURABLE ITEMS LIST

C1. SCOPE

This appendix lists expendable and durable items that you will need to operate and maintain the PVS-14/6015. This list is for information only and is not authority to requisition the listed items.

C2. EXPLANATION OF COLUMNS IN THE EXPENDABLE/DURABLE ITEMS LIST

Column (1) is the item number. Column (2) is the maintenance level. Column (3) is the national stock number. Column (4) is item name, description, CAGEC and part number. Column (5) is unit of measure.

Item Number	Level	National Stock Number	Item Name / Description	U/M
1	C	6640-01-459-4239	Paper, Lens (81348) A-A-50177, Type I, Class 5	PK