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1.3. PRINCIPLES OF OPERATION

1.3.1. MECHANICAL FUNCTIONS

The mechanical functions of the NVG allow for differences in the

physical features of individual operators and provide for operating

the system. These functions include the power switch, eye relief ad-

justment, diopter adjustment, and objective focus. The mechanical

controls are identified in Figure 1.3.

1.3.2. OPTICAL FUNCTIONS

The optical functions include an objective lens, image intensifier

and eyepiece lens (Figure 1.4.). The objective lens collects light

reflected from the night scene by the moon, stars, or night sky, in-

verts the image and focuses that image on the image intensifier.

The image intensifier converts the captured light into a visible im-

age and reinverts the image which can then be viewed through the

eyepiece lens.

PHOTOCATHODE

MICROCHANNEL

PLATE

FIBER-OPTIC INVERTER

PHOSPHOR

SCREEN

OBJECTIVE

LENS

IMAGE

INTENSIFIER

POWER

SUPPLY

EYEPIECE

LENS

EYE

FIGURE 1.4. OPTICAL FUNCTION DIAGRAM

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-bat-

tery indicator when the available battery voltage is 1.9–2.1 Vdc.

a. Power Source

The electronic circuit is powered by one battery.

b. Auto Mode

The automatic mode is different from the “IR” mode, and the auto-

matic mode starts the environment detection sensor. It can detect

environmental luminance in real time and work with reference to the

illumination control system. Under extremely low or extremely dark

environment, The system will automatically turn on infrared aux-

iliary lighting, and when the environmental illumination can meet

normal observation, The system automatically turns off “IR”, and

when the ambient illumination reaches 40–100 Lux, The whole sys-

tem is automatically shut down to protect the photosensitive core

components from damage by strong light.

Содержание ATN PS31

Страница 1: ...erce It is unlawful and strictly prohibited to export or attempt to export or otherwise transfer or sell any hardware or technical data or furnish any service to any foreign person whether abroad or in the United States for which a license or written approval of the U S Government is required without first obtaining the required license or written approval from the Department of the U S Government...

Страница 2: ...ices If you use the rubber eyecups for a long period of time you may suffer skin inflammation If you develop any symptoms consult a doctor immediately WARNING Do not carry batteries in pockets containing metal objects such as coins keys etc Metal objects can cause the batteries to short cir cuit and become very hot The information in this manual is furnished for information use only is subject to ...

Страница 3: ...S To avoid physical and equipment damage when using the ATN PS31 carefully read and understand the following safety precau tions The equipment requires some night light moonlight starlight etc to operate The level of performance depends upon the level of light Night light is reduced by passing cloud cover while operating under trees in building shadows etc The equipment is less effective viewing i...

Страница 4: ... 2 Resolution Check Using the TS 4348 UV Test Set 2 11 2 2 3 Inspection Criteria for Proper Image Intensifier Operation 2 13 2 3 Assembly and Preparation for Use 2 18 2 3 1 Unpacking 2 18 2 3 2 Installation of Battery 2 18 2 3 3 Installation of Eyecup 2 19 2 3 4 Installation and Adjustment of Headmount 2 19 2 3 5 Installation of Helmet Mount to Helmet 2 21 2 4 Operating Procedures 2 23 2 4 1 Hand ...

Страница 5: ...iii 1 1 CHAPTER 1 INTRODUCTION ...

Страница 6: ... 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 PS31 Night Vision Goggles 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...

Страница 7: ... inten sifier of the NVG or dirt or debris between the lenses BRIGHT SPOTS These defects can appear in the image area of the NVG This condition is caused by a flaw in the film on the micro channel 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 CAU...

Страница 8: ...on protective mask or other purposes It is adjustable and cushioned c Helmet Mount This item Figure 1 1 secures the goggles to the Personal Armor System Ground Troops PASGT helmet allowing freehand support for use with a weapon protective mask and or other purposes 1 2 EQUIPMENT DESCRIPTION 1 2 1 EQUIPMENT CHARACTERISTICS CAPABILITIES AND FEATURES The NVG is a hand held headmounted helmet mounted ...

Страница 9: ... Focus 5 to 5 diopters Objective Focus 25 cm to infinity TABLE 1 3 ELECTRICAL DATA ITEM DATA Battery Requirements Lithium battery CR123x1 CR123x4 external battery holder TABLE 1 4 MECHANICAL DATA ITEM CHARACTERISTICS Carrying Case Size Approx 14 x 8 Goggles see Note Weight 560 grams NOTE Weight of the goggles does not include accessories TABLE 1 5 OPTICAL DATA ITEM DATA Magnification 1 0x Field of...

Страница 10: ...IMAGE INTENSIFIER POWER SUPPLY EYEPIECE LENS EYE FIGURE 1 4 OPTICAL FUNCTION DIAGRAM 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 bat tery indicator when the available battery voltage is 1 9 2 1 Vdc a Power Source...

Страница 11: ...2 1 CHAPTER 2 OPERATING INSTRUCTIONS ...

Страница 12: ...T VERTICAL ADJUSTMENT NOTE Low battery indicator and IR source ON indicator are vis ible in eyepiece lens TABLE 2 1 GOGGLES CONTROLS AND INDICATORS CONTROLS AND INDICATORS FUNCTIONS Power Switch OFF Turns OFF the NVGs ON Goggles activated IR Turn On IR Illuminator Auto Automatic Environment Detection mode Objective Lens Focuses objective lens Adjusts for sharpest image of viewed object Diopter Adj...

Страница 13: ...do the procedure in the procedure column BEFORE procedures must be done before you operate or use the equipment for its intended mis sion DURING procedures must be done during the time you are operating or using the equipment for its intended mission AFTER procedures must be done immediately after you have operated or used the equipment 3 Location Check Service Column This column provides the loca...

Страница 14: ...ap Cracks or damage in the battery housing Cap is missing con tacts damaged or corroded o ring is missing ITEM NO INTER VAL LOCATION PROCEDURE NOT FULLY MISSION CAPABLE IF CHECK SERVICE 3 Cont Before After Battery Cap Housing Cont Remove battery and turn the power switch from Off to ON to AT Each position should have a definite stopping point Inspect for broken or missing knob Install battery and ...

Страница 15: ...vement range is approximately 1 3 turn Check objective lens for chips cracks and dents Focus ring is binding or not able to move ITEM NO INTER VAL LOCATION PROCEDURE NOT FULLY MISSION CAPABLE IF CHECK SERVICE 8 Before After Viewed Image NOTE Operator may use the TS 4348 UV to check resolution paragraph 2 2 2 Refer to paragraph 2 2 3 to inspect for op erational defects Flickering flashing edge glow...

Страница 16: ...ic 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 The rejection of any NVG 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 Test the goggles for low light and high light r...

Страница 17: ...ral As directed in the Preventive Maintenance Checks and Services ta ble image intensifier operation must be checked before each mis sion This section provides information for the operator concerning what to look for how to look for it and how to determine if the NVG should be returned to the maintainer CAUTION Perform the following inspection in the dark To perform this inspection attach the gogg...

Страница 18: ... objective lens to block out all light If the bright spot remains return the NVG to the maintainer Bright spots usually go away when the light is blocked out Make sure any bright spot is not simply a bright area in the There are two groups of defects you may encounter opera tional defects and cosmetic blemishes Operational defects are an immediate cause to reject the NVG Cosmetic blemishes are not...

Страница 19: ...hey do not interfere with viewing the image No action is required if this condition is present unless the spots interfere with the operator s ability to view the image or to perform the mission 4 Fixed Pattern Noise This is usually a cosmetic blemish char acterized by a faint hexagonal honeycomb pattern throughout the viewing area that most often occurs at high light levels or when viewing very br...

Страница 20: ...E TEMPERATURE NEGLIGIBLE IR SOURCE USAGE IR SOURCE USAGE 10 OF THE TIME CR123 21 C 70 F 60 Hrs 55 Hrs CAUTION Make certain the power switch is in the OFF position before installing the battery FIGURE 2 8 INSTALLATION OF BATTERY BATTERY BATTERY CAP Install the CR123 battery into the PS31 as follows 1 Unscrew the battery cap 2 Observe polarity as indicated on the side of the battery com partment and...

Страница 21: ...ve slack by adjusting the vertical adjustment at the neck pad 7 Adjust chinstrap and vertical adjustment until the chin cup and headband are in a comfortable but firm position NOTE After installing the goggles minor strap adjustments may be necessary to achieve comfort 8 Refer to paragraph 2 4 2 for operating procedures 2 3 5 INSTALLATION OF HELMET MOUNT TO HELMET 1 Remove the helmet mount from th...

Страница 22: ...trap for a stable fit then install and tension the helmet chin strap The brow of the helmet should be parallel to the ground and the helmet stable on the head 11 Insert the top edge of the mount under the keeper on the hel met mount bracket and rotate downward until the latch engages see Figure 2 12 To release the mount from the helmet bracket press the release and pull forward and down 2 4 OPERAT...

Страница 23: ...he way forward before attaching the goggles FIGURE 2 15 HEADMOUNT HELMET MOUNT OPERATION EYE RELIEF ADJUSTMENT VERTICAL ADJUSTMENT LATCH 3 Align the headmount helmet mount latch to the headmount socket Figure 2 15 Insert the Helmet Fixture into the Socket of the mount 4 Set your eye relief by depressing the eye relief adjustment Figure 2 15 and move the goggles back toward your eye until the eyecu...

Страница 24: ... direct mounting of the bracket via the helmet screws Perform the following procedures for helmet mounted operation NOTE The helmet mount provides two positions for the user to posi tion the NVG The flipped down position allows the user to posi tion the NVG directly in front of the eyes The helmet mount also allows the user to rotate the NVG to a flipped up position when the NVG is not needed for ...

Страница 25: ...the IR source can be detected by the enemy using night vision devices NOTE The sharpest image will be observed only when the objective lens and eyepiece lens are properly focused 5 Rotate the diopter adjustment for the clearest view of the image intensifier screen NOTE Any readjustment of eye relief requires readjustment of the diopter 6 Adjust the eye relief distance by depressing the side button...

Страница 26: ...sys tem is automatically shut down to protect the photosensitive core components from damage by strong light 2 4 4 1 Auxiliary Battery Installation optional FIGURE 2 20 AUXILIARY BATTERY INSTALLATION POWER CORD BATTERY HOLDER 1 Install 4 CR123 batteries into the battery holder 2 Attach the battery holder to the rear of the helmet or headgear 3 Run the power cord from the battery holder to the NVG ...

Страница 27: ... from the NVG and car rying 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 NVG unless the precautions given below are observed 1 Keep the carrying case and shipping and storage case closed unless removing or replacing items 2 Dry the goggles mounts and accessories after exposure to rain o...

Страница 28: ...3 1 CHAPTER 3 MAINTENANCE INSTRUCTIONS ...

Страница 29: ...properly installed battery Turn power switch to OFF position and then ON Replace batter y or install cor rectly 2 IR source fails to activate In a dark location with system turned on activate IR source Visually check IR source opera tion scene should brighten If IR source still fails to activate re fer to higher level of maintenance 3 IR source indicator fails to ac tivate Visual Refer to higher l...

Страница 30: ...ch If damaged return either head mount or helmet mount socket and headmount helmet mount adapt er 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 If damaged refer to higher level of maintenance Visual Refer to higher level of mainte nance MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTIO...

Страница 31: ...THE NVG CAUTION The goggles is a precision electro optical instrument and must be handled carefully Do not scratch the external lens surfaces or touch them with your fingers Clean goggles with water if necessary and dry thoroughly Clean lenses with lens paper ...

Страница 32: ...Notes Notes ...

Страница 33: ...ATN Corporation For customer service and technical support please contact American Technologies Network Corp 1341 San Mateo Avenue South San Francisco CA 94080 phone 800 910 2862 650 989 5100 www atncorp com ...

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