ATN PVS-7 operator`s manual
Contents
1. INTERVAL amp SEQUENCENO ITEM TO BE INSPECTED PROCEDURE TILT ADJUSTMENT Verify knob locks tilt in place and full range of tiltis available with knob loosened SOFT CARRYING CASE Remove all items and shake out loose dirt or foreign material In spect for tears cuts excess wear or damage to mounting clips SHOULDER STRAP ASSEMBLY Inspect for cuts tears or excess wear of damaged clips Damaged optional items compass IR spot flood sacrificial window demist shields 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 capabil ity of the system DEMIST SHIELDS Inspect for dirt dust scratches or damage If necessary clean when shields are dry and with dry lens paper LIGHT INTERFERENCE FILTER LIF In spect for dirt dust scratches or damage If necessary clean with water and dry with lens 24 IR SPOT FLOOD LENS Rotate IR focus lens to ensure free movement INTERVAL amp SEQUENCENO ITEM TO BE INSPECTED PROCEDURE COMPASS ASSEMBLY Inspect for dirt dust scratches or damage If necessary clean with water and dry with lens paper Install compass assembly and turn on goggle When the illumination button is depressed the compass should be visible 3X 5X AFOCAL MAGNIFIER LENS Check lens for scratches or damage Check mating to objective lens by screwing in or pressing on with adapter instal2. or 5X magnifier lens assembly can be threaded directly into the 1X objec tive lens with the light interference filter LIF and sacrificial window 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 NOTE The Neck cord can be used to tether the magnifier to your person to prevent losing the lens if it is dropped To use the Neck cord tie the end without the clip tightly around the magnifier and attach the clip to a buttonhole belt loop or other convenient point Figure 2 13 PVS 7 with Magnifier Lens Assembly Installed F Infrared IR Operations WARNING THE IR ILLUMINATOR IS A LIGHT THAT IS INVISIBLE TO THE UNAIDED EYE FOR USE DURING CONDITIONS OF EXTREME DARKNESS HOWEVER THE LIGHT FROM THE ILLUMINATOR CAN BE DETECTED BY THE ENEMY USING NIGHT VISION DEVICES 1 Pull the RESET OFF ON IR PULL switch knob Figure 2 1 out and rotate clockwise to the IR position With the PVS 7 held to the eyes observe that a red light appears in the left eyepiece This in 2 28 dicates that the IR illuminator is operating When spring loaded mo mentary IR position is used the illuminator should only flash on 2 To Operate with the IR Spot Flood Lens Pull the RESET OFF ON IR PULL switch knob out and rotate clock wise to the IR posi tion With the PVS 7 held to the eyes turn the IR spot flood until you have achieved the optimum illumination of the desired
3. 14 Compass Visual Refer to higher level of does not illumi maintenance nate 15 Compass Visual Possibly missing an o will not stay on ring the PVS 7 Refer to higher level of maintenance 3 4 MALFUNCTION 16 Compass display is not clear 17 PVS 7 does not shut off when exposed to high light test under day light or bright room light TEST INSPECTION Visual Perform the follow ing tests under day light or bright room light Place the lens cap on the objective lens Turn PVS 7 on and observe that they shut off within 70 30 seconds after energized Turn goggle off and then on to re ener gize CORRECTIVE ACTION Make sure the PVS 7 is focused for infinity If so and compass display is still not clear refer to high er level of maintenance If damaged refer to high er level of maintenance 3 5 SECTION Il MAINTENANCE PROCEDURES 3 2 CLEANING THE PVS 7 CAUTION THE PVS 7 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 the goggle with water if necessary and dry thoroughly Clean lenses with lens paper and water if necessary except for demist shields CAUTION WIPING DEMIST SHIELDS WITH LENS PAPER WHILE WET CAN DAMAGE THE COATING 3 3 HEAD MOUNT MAINTENANCE A Brow Pad Replacement Replace the brow pad when cracked torn or contaminated Perform the following p
4. Figure 2 9 Nape Strap Installation 7 Disengage the nape strap latch on the left side of the nape strap 8 Don the helmet 9 Engage the nape strap at the nape strap latch Tension the chin strap and nape strap for a secure and stable fit The brow of the helmet should be parallel with the ground 2 7 INSTALLATION OF THE QUICK DISCONNECT HELMET MOUNT ASSEMBLY 1 Remove the helmet mount assembly from the carrying case Make sure the helmet mount is complete Refer to Figure 2 10 for the helmet mount components and features CAUTION TO PREVENT POSSIBLE EQUIPMENT DAMAGE REMOVE BOTH THE GOGGLES AND THE MOUNT ASSEMBLY FROM THE HELMET WHEN NOT REQUIRED FOR IMMEDIATE USE THE CLIP STRAP ASSEMBLY CAN REMAIN IN PLACE ON THE HELMET 2 If the mount assembly and clip strap assembly are connected remove the mount assembly To do this push the release lever at the top center of the mount and slide the two assemblies apart 3 Adjust the clip strap assembly to fit the helmet size being used 4 With the catch in the most extended position place the strap over the top of the helmet center and hook the rear bracket onto the rear of the helmet Center the front bracket hook on the front of the helmet and hold itin place 5 With the buckle lever open take up the slack in the clip strap as sembly using the catch Close the buckle lever 6 If the PASGT helmet has its cloth cover and camouflage strap installed it will be necessary to slide
5. The objective lens fo cus adjustment is used to focus on objects at varying distances The diopter adjustment rings are used to focus your eyes without glasses on the image intensifier screen These adjustments oper ate independently and must be made separately 8 Fold the right eyecup over the eyepiece with your right thumb or forefinger to obstruct the view through the right eyepiece Rotate the left diopter adjustment ring for the clearest view of the image intensifier screen 9 Fold the left eyecup over the eyepiece with your left thumb or forefinger to obstruct the view through the left eyepiece Rotate the right diopter adjustment ring for the clearest view on the image in tensifier screen 10 Adjust the eye relief distance by pressing the socket release button See Figure 2 1 and sliding the PVS 7 fore or aft to obtain a full field of view of the image Readjust the diopter rings for best image NOTE Any readjustment of eye relief requires readjustment of the diopter rings 11 Adjust the objective lens focus Figure 2 1 while observing an object until the sharpest image is obtained 2 23 B Helmet Mounted Operation Perform the following procedures for helmet mounted operation 1 Ensure that batteries are installed per paragraph 2 6 B 2 Don the helmet mount per instructions in paragraph 2 6 M 3 Place the PVS 7 in the socket of the helmet mount See Figure 2 8 Set your eye relief by depressing the side bu
6. using your left hand Slowly turn the compass assembly counter clockwise until it is in the vertical position with compass illumina tion button pointing down See Figure 2 3 5 Ensure that the compass fits tightly to the PVS 7 NOTE The o ring must be in place in the compass assembly in order for the compass to fit properly 6 Refer to paragraph 2 6 F for operation of the compass G Installation of the Light Interference Filter Perform the fol lowing procedure to install the light interference filter LIF onto the objective lens assembly Figure 2 5 Installation of the Light Interference Filter 1 Remove the container wrench from the carrying case pouch 2 If the lens cap compass assembly or sacrificial window is on the objective lens of the PVS 7 remove it 3 Carefully open the container wrench and remove the LIF 4 Hold the LIF by the notched end and thread it clockwise into the end of the objective lens see Figure 2 5 5 Using the ridged side of the container wrench as a wrench en gage the ridges on the container with the ridges on the LIF and tighten the LIF hand tight 6 Place the empty container wrench back into the pouch in the car rying case 2 15 2 16 7 Replace the lens cap or the sacrificial window onto the end of the objective lens and over the LIF CAUTION BE CAREFUL NOT TO TOUCH THE GLASS SURFACES IF YOU GET FINGERPRINTS OR CONTAMINATION ON THE GLASS SURFACES USE LENS PAPE
7. 18 4 Holding the chin cup in position on chin adjust both rear chin cup assembly straps until you feel light pressure against your chin DO NOT TIGHTEN 5 Maintain the position of the chin cup and remove any slack from the front and rear chin straps DO NOT TIGHTEN 6 Ensure that the cross strap assembly is not twisted and remove slack by adjusting the vertical adjustment strap at the neck pad 7 Adjust chin strap and vertical adjustment until the chin cup and headband assembly arc in comfortable but firm position NOTE After installing the PVS 7 minor strap adjustments may be neces sary to achieve comfort 8 Refer to paragraph 2 7 A for operating procedures of head mount assembly J Installation of Head Mount Assembly with Protective Mask Perform the following procedures for donning the head mount with a protective mask 1 Place protective mask on your head per the instructions provided with the mask WARNING WHEN INSTALLING THE HEAD MOUNT OVER THE PROTECTIVE MASK BE CAREFUL NOT TO BREAK THE PROTECTIVE MASK SEAL AROUND YOUR FACE 2 Install the head mount assembly per instructions in paragraph 2 6 NOTE It may be necessary to remove the brow pad when wearing the head mount over a protective mask K Installation of the Head Mount Assembly with the PASGT Helmet Install the head mount assembly per the instructions in paragraph 2 6 I L Installation of the Head Mount Assembly with the M1 Helmet
8. 3 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 This table cannot list all the malfunctions that may occur all the tests and inspections needed to find the fault or all the corrective actions to correct the fault If the equipment malfunction is not listed or actions listed do not correct the fault notify your maintainer Table 3 1 Operator s Troubleshooting MALFUNCTION TEST INSPECTION CORRECTIVE ACTION 1 Goggle fails Visual Turn switch to RESET to activate OFF position and then ON Check for defec Replace battery ies or tive missing or im install correctly properly installed battery ies If PVS 7 still fails to acti vate refer to higher level of maintenance 2 IR indicator Visual Refer to higher level of fails to activate maintenance 3 Poor image Check objective lens Refocus quality or eyepiece focus Check for fogging or Clean lens surface dirt on lens MALFUNCTION 4 Light visible around eyecup 5 Diopter ad justment can not be made 6 Interpupil lary adjust ment cannot be made left amp right eye 7 Battery cap difficult to turn 8 PVS 7 does not shut off when removed from head mount during operation TEST INSPECTION Check eye relief dis tance Check eyecup for resiliency Check to see if the diopter adjustment rin
9. VS ON 007 7 ens Paper o a shoulder stapAssemby Amanan207 2 Ligntinerirence ter ATN5000767_ 127 imageinensitertube 17 Helmet Mount Assembly ATN3256390 18 Neck Cord ATN3260933 19 Shipping Storage Case ATN3187393 Not Shown Optional equipment or Equipment having variants 1 8 G Compass This item enables the operator to see azimuth read ings in the goggle s illumination viewing area H Neck Cord This additional authorized item enables the user to attach the compass or 3X magnifier lens to his her self to guard against dropping or losing these items 1 Optional Equipment Optional equipment includes demist shields sacrificial window Light Interference Filter LIF compass helmet mount assembly and an IR spot flood lens see Figure 1 1 Also included is a shipping and storage case The PVS 7 may be supplied in hard shipping and storage case Batteries may also be stored in the shipping and storage case 1 6 EQUIPMENT CAPABILITIES The PVS 7 is a hand held head mounted or helmet mounted night vision system that enables walking driving weapon firing short range surveillance map reading vehicle maintenance and admin istering first aid in both moonlight and starlight Each unit allows for vertical adjustment by using head straps fore and aft adjustment objective lens focus eyepiece focus and eye relief distance adjust ment The goggle also equipped with an infrared IR li
10. blocked out and arc cosmetic blem ishes that are signal induced BROWPADS Three hook and pile browpads are provided to ad just the head mount to fit different head sizes The thin brow pad fits on a large head comes attached to the head mount and the thick or medium fits on a smaller head brow pads are stored in the carrying case 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 Under the worst case condition these lines will form hex agonal or square wave shaped lines DARK OR DARK AREA A place in which there is very little light It docs not mean total darkness Generally this means conditions similar to a quarter moon or starlit night DEMIST SHIELDS The two demisting shields are used to pre ventthe eyepiece lenses from becoming fogged DIOPTER A unit of measure used to define eye correction Ad justments to the eyepiece focus ring will change diopter and pro vide a clearer image EDGE GLOW There is a defect in the image area of the PVS 7 Edge glow is a bright area sometimes sparkling in the outer por tion 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 The position of an emission point within the image area does not move An emission point should not be confused with a point light source in th
11. distance Turn the RESET OFF ON IR PULL switch counterclockwise to the ON position Observe that the red indicator disappears 2 9 PREPARATION FOR STOWAGE A Shutdown Perform the following procedures to shut down the PVS 7 1 Turn the RESET OFF ON IR PULL switch to the OFF position 2 Remove the PVS 7 from the head mount or helmet mount if so equipped by depressing the latch lever Figure 2 1 and removing the PVS 7 from the head mount socket B Packaging After Use 1 Unscrew the battery cap and remove the battery ies 2 Inspect the battery compartment for corrosion or moisture Clean and dry if necessary 3 Replace the battery cap 4 Remove the demist shields sacrificial window or compass as sembly if installed Install the lens cap NOTE Prior to placing the PVS 7 assembly into the carrying case ensure the goggle and case are free of dirt dust and moisture 5 Place demist shields batteries carrying case strap lens paper sacrificial window manual LIF brow pads head mount helmet mount and compass into the carrying case see Figure 1 1 6 Place the PVS 7 objective lens down into the shallow pocket of the carrying case 7 Place the carrying case into the shipping storage case Figure 2 14 close and latch it 2 29 8 Return to storage area Figure 2 14 PVS 7 Shipping storage case 2 30 CHAPTER 3 MAINTENANCE INSTRUCTIONS 3 1 SECTION I TROUBLESHOOTING 3 2 PROCEDURES
12. frequency of PMCS performing PMCS is follows A Daily when the PVS 7 is in use B Weekly when a standby condition C Semi annually when stored in depot or administrative stow age 2 5 PERFORMANCE OF PMCS Preventive maintenance checks and services shall be performed following the sequence and inspection procedures indicated in Table 2 2 Table 2 2 Preventive Maintenance Checks and Services B Before Operation D During Operation A After Operation ITEM TO BE INSPECTED PROCEDURE GOGGLE Check for completeness includ ing accessories Check for dirt and moisture on external surfaces and parts Clean and dry with lint free cloth SHIPPING CASE Check for dirt moisture and mildew Clean with mild detergent and wa ter Dry with lint free cloth 2 5 2 6 INTERVAL amp SEQUENCENO ITEM TO BE INSPECTED PROCEDURE CARRYING CASE Check for dirt moisture and mildew Clean with mild detergent and wa ter Dry with lint free cloth BATTERIES Remove batteries Check for corrosion on terminals and dirt or moisture in battery cap Clean battery cap with dry cloth Replace batteries if corroded LENSES Check for dirt and moisture Clean with lens paper or brush and or alcohol and cotton swabs EYECUPS Check for dirt dust cracked or torn cups Inspect for bent broken or improp erly fitting eyecup INTERPUPILLARY ADJUSTMENT Slide each eyepiece back and forth to check for binding or loosenes
13. inclement operating conditions are known to exist e g significant temperature change and high humidity install the demist shields to minimize diopter lens fog prior to execution of mission 1 Carefully remove the eyecups 2 Carefully press a demist shield onto each eyepiece Be careful not to smudge the eyepieces or demist shields 3 Replace the eyecups see paragraph 2 6 C 2 13 2 14 E Installation of the sacrificial Window Perform the following procedure to install the sacrificial window Refer to Figure 2 3 CAUTION IF ADVERSE OPERATING CONDITIONS DUST OR SAND ARE KNOWN TO EXIST ATTACH THE SACRIFICIAL WINDOW TO PROTECT THE OBJECTIVE LENS FROM SCRATCHES OR OTHER DAMAGE 1 If the compass assembly or lens cap is in place remove it 2 Carefully push the sacrificial window over the objective lens un til it stops Turn the sacrificial window clockwise until it snaps into place F Installation of the Compass Assembly Figure 2 4 Installation of Compass NOTE a Prepare the PVS 7 for operation paragraph 2 6 b Leave LIF in place when installing the compass assembly c Ensure the Neck cord is secured to the compass and clothing before installing 1 If the sacrificial window or lens cap is in place remove it 2 Turn the PVS 7 on 3 Rotate the objective lens focus completely counterclockwise while looking through the goggle 4 Press the compass assembly onto the objective lens at an angle
14. the image brighter The image disap pears when the button is released 2 3 ITEMS CONTROLS AND FUNCTIONS INDICATORS Objective Focus Focuses objective lens Adjusts for sharpest image of viewed object Battery Polarity In The feature molded into the PVS dicator 7 shows the proper orientation of the batteries Latch used for separation of gog gle assembly from head mount helmet mount assembly LED On Indicator When illuminated left eyepiece Not Shown it indicates that the IR illumination is on with less than 30 minutes of bat tery life remaining Diopter Adjustment Focuses eyepiece lens for each Ring eye without the need for glasses Adjusts for sharper image of inten sifier screen Interpupillary Ad Adjusts for distance between justment eyes by sliding the eyepieces ei ther together or apart so each eye can observe the entire field at the same time Eye Relief Adjusts the distance between your eyes and the goggle Low Battery Indica When illuminated right eyepiece tor Not Shown itindicates a low battery condition 2 4 SECTION II PREVENTIVE MAINTE NANCE CHECKS AND SERVICES PMCS 2 3 PURPOSE OF PMCS PMCS is performed daily when the PVS 7 is in use to ensure that the sight is ready at all times Procedures are a systematic inspec tion of the goggle that will enable you to discover defects that might cause the PVS 7 to fail on a mission 2 4 FREQUENCY OF PERFORMING PMCS The
15. the camouflage strap up at about a 30 45 angle at the front of the helmet see Figure 2 10 Helmet Mounting Clip Tilt Adjustment Release Lever Figure 2 10 Quick Disconnect Helmet Mount Features 7 Disengage the nape strap latch on the left side of the nape strap 8 Don the helmet Do not fasten the helmet chinstrap 9 Engage the nape strap at the nape strap latch Tension the nape strap 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 10 To install the mount assembly into the clip strap assembly place its top flange to the top groove of the mounting clip and then 2 21 press to the mount assembly bottom until it locks into place with a click see Figure 2 10 2 8 OPERATING PROCEDURES This section contains operating procedures for using the PVS 7 as a hand held head mounted or helmet mounted goggle Prior to op erating the goggle ensure that all the steps in paragraph 2 6 have been read and performed A Head Mounted Operation Perform the following procedures for head mounted operation CAUTION OPERATE THE PVS 7 ONLY UNDER DARKENED CONDITIONS OR USE THE LENS CAP TO COVER THE OBJECTIVE LENS FOR DAYLIGHT CONDITIONS NOTE Proper objective focus cannot be obtained while the objective lens cap with pinhole is covering the objective lens Proper objec tive focus must be done in the dark w
16. 2 9 Preparation for Stowage CHAPTER 3 Maintenance Instructions Section Troubleshooting Procedures 3 1 Troubleshooting Section Il Maintenance Procedures 3 2 Cleaning the PVS 7 3 3 Head Mount Maintenance APPENDIX A System Optional Equipment FOR TECHNICAL INFORMATION CHAPTER 1 INTRODUCTION SECTION I GENERAL INFORMATION 1 2 1 1 SCOPE This manual provides operation and maintenance instructions for the PVS 7 Night Vision Goggle which shall be designated a gog gle or PVS 7 throughout this manual The PVS 7 is a self con tained night vision device that enables improved night vision us ing ambient light from the night sky moon stars sky glow etc 1 2 REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS EIR Reports from the user on recommendations for improvements are encouraged Send reports to the address below American Technologies Network Corp 1341 San Mateo Avenue South San Francisco CA 94080 800 910 2862 650 989 5100 650 875 0129 fax www atncorp com info O atncorp com 1 3 GLOSSARY BLACK SPOTS These arc cosmetic blemishes in the image in tensifier of the PVS 7 or dirt or debris between the lenses BRIGHT SPOTS These can be defects in the image area pro duced by the PVS 7 This condition is caused by a flaw in the film on the micro channel plate A bright spot is a small non uniform bright area that may flicker or appear constant Bright spots usu ally go away when the light is
17. 910 2862 650 989 5100 tel 650 875 0129 fax www atncorp com info atncorp com INFO 1 06609 For customer service and technical support please contact American Technologies Network Corp North American Office 1341 San Mateo Avenue South San Francisco CA 94080 phone 800 910 2862 650 989 5100 fax 650 875 0129 European Office The following countries can use our toll free number 00 800 9102 8620 Austria France Germany Holland Italy Spain Sweden Switzerland For other countries please use 38 048 7770214 or 38 048 7770345 www atncorp com 2009 ATN Corporation
18. ATN PVS 7 NIGHT VISION GOGGLES OPERATOR S MANUAL PVS 7 REVISION 3 APRIL 2009 operator s manual Important Export Restrictions Commodities products technologies and services contained in this manual are subject to one or more of the export control laws and regulations of the U S Government and they fall under the control jurisdiction of either the US Department of State or the US BIS Department of Commerce It is unlawful and strictly prohibited to export or attempt to export or otherwise transfer AMERICAN or sell any hardware or technical data or furnish any TECHNOLOGIES service to any foreign person whether abroad or NETWORK in the United States for which a license or written CORP 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 having jurisdiction Diversion contrary to U S law is prohibited Manual PVS 7 Revision 3 April 2009 The information in this manual furnished for information use only is subject to change without notice is not to be construed as a commitment by ATN Corp ATN Corp assumes no responsibility or liability for any errors or inaccura cies that may appear in this book 2009 Corp All right reserved SAFETY SUMMARY CAUTIONS e The PVS 7 is a precision optical instrument and should be handled carefully to prevent its damage e Do not scratch the external lens surfac
19. Install the head mount assembly per the instructions in paragraph 2 6 M Installation of the Helmet Mount Assembly Optional to the PASGT Helmet 1 Remove mount assembly from the carrying case Refer to Figure 2 8 for the helmet mount features Catch Helmet Buckle Lever Strap Tilt Adjustment Side Button Socket Front Bracket Rear Bracket Figure 2 8 Helmet Mount Features 2 With the catch in forward most position place the strap over the top of the helmet center and hook the rear bracket onto the rear of the helmet Center the front bracket hook in on the front of the helmet and hold it in place See Figure 2 8 3 With the buckle lever open take up the slack in the strap using catch Close the buckle lever 4 Place the helmet upside down with the helmet mount facing you NOTE Steps 5 and 6 describe the installation of the nape strap to the chin strap To accomplish these steps it may he necessary to unthread the chinstrap from the helmet 5 Thread the chinstrap through the right end of nape strap and snap nape strap fastener tab closed Refer to Figure 2 9 6 Thread chin strap through the left end of nape strap and snap nape strap fastener tab closed Refer to Figure 2 9 2 19 2 20 Nape Strap Fastener Tabs A Loop the nape strap fastener tabs around the corners of the chin strap and snap closed After closure the snaps will be on the outside away from your chin
20. R TO CLEAN THE LIF IF MOIS TURE IS NEEDED USE YOUR BREATH TO MIST THE SURFACE OF THE GLASS DO NOT OVER TIGHTEN THE LIF INTO THE OBJECTIVE LENS NOTE The lens cap compass assembly or the sacrificial window will fit onto the end of the objective lens with the LIF in place H Installation of the IR Spot Flood Lens 1 Press the IR spot flood lens over the IR source until it is tight against the goggle Refer to Figure 2 6 Figure 2 6 Installation of the IR Spot Flood Lens l Installation and Adjustment of the Head Mount Assembly Perform the following procedures for donning the head mount NOTE Do not don the head mount while the PVS 7 is attached to it Browpad Neckpad Headband Socket Assembly Socket Chin Strap Release Adjustment Button Pa Sliding Bar Chin Cup Buckles Figure 2 7 PVS 7 Head Mount Adjustments 1 Prior to donning the head mount loosen the four chin straps so the ends of each strap arc approximately two inches from the slid ing bar buckles See Figure 2 7 2 Snap the front and rear snaps in place NOTE If the head mount is too loose remove the attached thin brow pad and replace with either the medium or large brow pad stored in the carrying case Refer to Chapter 3 paragraph 3 4 for removal and replacement of the brow pads 3 With both hands grasp the neck pad assembly and pull the har ness over your head and the neck pad down to the back of your neck 2 17 2
21. d only when the objective lens and both eyepieces are properly focused The objective focus adjustment is used to focus on objects at varying distances The diopter adjustment rings are used to focus your eyes with or without glasses on the image intensifier screen These adjustments oper ate independently and must be made separately 4 Hold the PVS 7 with your left hand and fold the left eyecup over the eyepiece with your left thumb or forefinger to obstruct view through the left eyepiece Rotate the right diopter adjustment ring for the clearest view on the image intensifier screen 5 Hold the PVS 7 with your right hand and fold the right eyecup over the eyepiece with your right thumb or forefinger to obstruct view through the right eyepiece Rotate the left diopter adjustment ring for the clearest view on the image intensifier screen 6 Readjust the objective lens assembly while observing an object until the sharpest image is obtained D Operation with Compass Assembly NOTE The objective lens focus can be fine tuned after installation but in order to obtain an accurate reading the compass must be vertical The compass image must be level 1 Install per paragraph 2 6 F 2 If necessary to more clearly view your distant object adjust the objective focus slightly by gripping the compass and turning clock wise 3 To view the compass through the PVS 7 grip the compass with index finger on top and thumb on illumination butt
22. e distance FIXED PATTERN NOISE This is a cosmetic blemish in the im age area characterized by a faint hexagonal honeycomb pattern throughout the viewing area that most often occurs at high light levels or when viewing very bright lights Fixed pattern noise is in herent in the structure of the fiber optics and can be seen in every image intensifier if the light level is high enough FLASHING This is a defect in the image area of the PVS 7 The image appears to flicker or flash FLICKERING See flashing IMAGE INTENSIFIER ASSEMBLY 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 dis tant object such as a star or the point light on a distant tower forms the sharpest image 1 3 1 4 INTERMITTENT OPERATION This is a defect in the image area of the PVS 7 Sec flashing LIGHT INTERFERENCE FILTER LIF This is a tear protection fil ter for the goggle 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 PHOTOCATHODE The input optic of an image intensifier that ab sorbs light energy and in turn releases electrical energy in the form of an electron image SACRIFICIAL WINDOW A replaceable sacrificial window is sup plied to protect the objective lens assembly during operation i
23. e goggle When the voltage drops to 2 4 VDC a low battery indicator at the right eyepiece blinks indicating approximately 30 minutes of operating time IR PULL Position Power is drawn from the battery compartment to energize the goggle and IR light source and a steady red indicator light in the left eyepiece The IR is momentarily turned on by turning the switch past ON without pulling the knob C Automatic Shutoff When the goggle is removed from the head mount or helmet mount while in operation they will automatically shut off This prevents enemy detection of the green glow of the image intensifier To turn the goggle back on turn the switch to RE SET OFF and then to ON again D High Light Cutoff The goggle will automatically shut off after 70 30 seconds of operation in daylight or bright room light In dividual bright lights headlights flashlights or other concentrated light sources will not actuate the high light cutoff function unless focused directly on the high light detector located on the front of the goggle To turn the goggle back on turn the switch to RESET OFF position and then to ON again 1 10 CONSUMABLE ITEMS Items listed in the Table 1 7 are recommended for operator main tenance Table 1 7 Consumable ltems ITEM LIMITS CHAPTER 2 OPERATING INSTRUCTIONS 2 1 2 2 SECTION I OPERATING PROCEDURES 2 1 GENERAL This section contains instructions for placing the PVS 7 in operation and to ope
24. emove the battery cap by turning it counterclockwise 2 Check to ensure the o ring is present If not replace it 3 Observe polarity as indicated on the outside of the battery com partment and insert eithertwo AA 1 5 Volt batteries or one 3 0 Volt BA 5567 U lithium battery into the battery compartment plus end first See Figure 2 2 4 Replace battery cap by pushing and turning it clockwise Tighten itfirmly to ensure a watertight seal C Installation of the Eyecups Perform the following procedure to install the eyecups onto the PVS 7 Refer to Figure 2 2 1 Carefully press each eyecup over the diopter cell retainer 2 Rotate each eyecup into proper viewing position Adjust for best eye fit The eyecups must seal around your eyes and prevent the green glow from escaping Alkaline Batteries size AA Lithium Battery Cup Eyecup r Battery with O ring Figure 2 2 Battery and Eye cap Installation Demist a Shields Compass IR Spot Flood Lens Sacrificial Window LIF Figure 2 3 Installation of Demist Shields Sacrificial Window D Installation of the Demist Shields Perform the following pro cedure to install the demist shields on the diopter lenses Refer to Figure 2 3 CAUTION IF THE DEMISTING SHIELDS NEED TO BE CLEANED MAKE SURE THE SHIELDS ARE DRY AND USE DRY LENS PAPER IF THE DEMIST SHIELDS ARE WIPED WHILE WET OR WITH WET LENS PAPER YOU WILL DAMAGE THE COATING NOTE If
25. ens a wired housing as sembly an image intensifier tube IIT assembly not shown and a rear cover assembly The wired housing assembly contains a built in battery compartment attached battery cap and the RESET OFF ON IR PULL switch B Head mount Assembly The adjustable cushioned head mount assembly secures the goggle to the operator s head for night view ing providing freehand support for use with a weapon protective mask or other purposes The thin brow pad used for larger heads comes attached to the head mount and the thick or medium brow pads for smaller heads arc stored in the carrying case C Carrying Case The canvas carrying case is provided for trans portation and protection of the PVS 7 head mount assembly bat teries and accessories Two slide keepers arc provided for belt attachment A carrying case strap is also provided which can be attached to the two D rings on the back of the carrying case The case has a zipper closure D Demist Shields The two demist shields are used to prevent the eyepiece lenses from becoming fogged E Sacrificial Window A replaceable sacrificial window is sup plied to protect the objective lens during operation in adverse con ditions F IR Spot Flood Lens This item focuses the IR light for a narrow beam spot or wide angle flood beam illumination 1 5 Figure 1 1 PVS 7 Components 1 6 Table 1 1 System Components ITEM DESCRIPTION PART NO e ooerstorswmana
26. es or touch them with your fingers To protect the image intensifier keep the lens cap on the objec tive lens on when the device is not in use or when it is checked out in daylight conditions e The IR illuminator produces a light that is invisible to a naked eye for use in conditions of extreme darkness However this IR light can be detected by somebody else who use a night vision device If you use the rubber eyecups for a long time period you may suffer from skin inflammation If you find any symptoms consult a doctor immediately CAUTION THIS PRODUCT CONTAINS NATURAL RUBBER LATEX WHICH MAY CAUSE ALLERGIC REACTIONS NOTES e Do not test the device in daylight conditions even with the day light filter lens cap on for more than ten 10 minutes e To protect the device from damage do not direct it to the bright light sources a fire headlights of the automobile lanterns etc e The purpose of the built in IR illuminator is to view at close dis tances up to 3 meters when additional illumination is needed e The unit is equipped with the Automatic Shut off System This system tracks when the unit is not used the controls are not touched for 60 minutes continuous and shuts the unit off auto matically To turn the unit on after automatic shut off you need to rotate the operation knob to the OFF position first and then to the ON posi tion EQUIPMENT LIMITATIONS To avoid physical and equipment damage when usin
27. g is bent or bro ken Defective eyepiece assembly Check for dirt or grit in threads Visually inspect for the presence of an o ring Check for dam aged battery cap or threads on battery compartment Visual CORRECTIVE ACTION Readjust for proper eye relief distance If eyecups defective re fer to higher level of main tenance If damaged refer to high er level of maintenance Refer to higher level of maintenance Clean If o ring is missing refer to higher level of mainte nance If damaged refer to high er level of maintenance Return both the PVS 7 and head mountto higher level of maintenance MALFUNCTION TEST INSPECTION CORRECTIVE ACTION 9 Head straps Check for defective If damaged refer to high cannot be tight buckles fasteners er level of maintenance ened or straps 10 Head Check socket or Clean socket and latch mount or latch for dirt helmet mount socket and Check socket or If damaged return both goggle donot latch for damage head mount or helmet catch mount and PVS 7 to higher level of mainte nance 11 Helmet Visual If damaged refer to mount will higher level of mainte not tighten to nance helmet 12 LIF Check for dirt Clean threads thread in or threads obstructs view Check for damaged If damaged refer to assembly higher level of mainte nance 13 IR spot Visual Refer to higher level of flood lens will maintenance not adjust
28. g the ATN PVS 7 carefully read and understand the following equip ment limitations e The equipment requires some night light moonlight starlight etc to operate The level of equipment performance depends upon the level of light e Night light reduces by passing through the clouds while operat ing under trees at building shadows etc e The equipment is less effective when viewing into shadows and other darkened areas e The equipment is less effective when viewing through the rain fog sleet snow or smoke e The equipment will not see through the dense smoke TABLE OF CONTENTS SAFETY SUMMARY CHAPTER 1 Introduction Section General Information 1 1 Scope 1 2 Reporting Equipment Improvement Recommendations EIR 1 3 Glossary 1 4 Administrative Stowage Section Il Equipment Description 1 5 Equipment Characteristics Capabilities and Features 1 6 Equipment Capabilities 1 7 Specifications Section 111 Operation principles 1 8 Mechanical Functions 1 9 Optical and Electrical Functions 1 10 Consumable Items CHAPTER 2 Operating Instructions Section I Operating Procedures 2 1 General 2 2 Controls and Indicators Section Il Preventive Maintenance Checks and Services PMCS 2 3 Purpose of PMCS 2 4 Frequency of Performing PMCS 2 5 Performance of PMCS Section 111 Assembly and Preparation 2 6 Preparation of Use 2 7 Installation of the Quick Disconnect Helmet Mount Assembly 2 8 Operating Procedures
29. ght emitting diode or illuminator and a low battery LED indicator The goggle automatically shuts off when disconnected from the head mount or helmet mount or flipped up on the helmet mount There is also a high light cutoff feature that shuts off power to the goggle when it is exposed to high levels of light for 70 30 seconds 1 7 SPECIFICATIONS The following tables provide information pertaining to the opera tional electrical mechanical optical and environmental character istics for the goggles Table 1 2 Operator Adjustment Limits ITEM LIMITS Interpupillary Distance 55 to 71 mm Objective Focus 25 cm to infinity Table 1 3 Electrical Data ITEM LIMITS Battery Requirements 2 AA Alkaline or Table 1 4 Mechanical Data ITEM LIMITS Shipping and Storage Case Size Approx 17 x12 x7 Weight 6 7 Ibs Soft Carrying Case Size Approx 14 x8 Goggle See NOTE Weight 1 5 lbs NOTE The weight of the PVS 7 does not include accessories 1 9 Table 1 5 Optical Data ITEM LIMITS Eyepiece Focus 2 to 6 diopters Table 1 6 Environmental Data ITEM LIMITS Operating Temperature 40 C to 50 C Storage Temperature 50 C to 70 C Illumination Required Overcast starlight to moon light SECTION OPERATION PRINCIPLES 1 8 MECHANICAL FUNCTIONS Mechanical adjustments of the PVS 7 allow for physical differences between individual operators using the system The goggle s func tions i
30. gle to shutdown WARNING THE LITHIUM BATTERY CONTAINS SULFUR DIOXIDE GAS UNDER PRESSURE DO NOT HEAT PUNCTURE DISASSEMBLE SHORT CIRCUIT ATTEMPT TO RECHARGE OR OTHERWISE TAMPER WITH THE BATTERIES TURN OFF EQUIPMENT IF BATTERY COMPARTMENT BECOMES UNDULY HOT IF POSSIBLE WAIT UNTIL THE BATTERIES HAVE COOLED BEFORE REMOVING THEM BATTERIES HAVE SAFETY VENTS TO PREVENT EXPLOSION WHEN THEY ARE VENTING GAS YOU WILL SMELL IT VERY IRRITATING OR HEAR THE SOUND OF GAS ESCAPING WHEN THE SAFETY VENTS HAVE OPERATED THE BATTERIES ARE FAIRLY SAFE FROM BURSTING BUT STILL MUST BE HANDLED WITH EXTREME CARE BECAUSE OF HEAT IF YOU INHALE SULFUR DIOXIDE SEEK MEDICAL ATTENTION The PVS 7 will operate with either of the two battery types identified in Table 2 3 Batteries are not supplied with the PVS 7 and must be obtained Table 2 3 Estimated Battery Life BATTERY TYPE NEGLIGIBLE IR USAGE 10 IR USAGE OF THE TIME Lithium BA 5567 U 47 85 Hours 36 65 Hours AA Alkaline BA 3058 U 89 160 Hours 68 123 Hours NOTE The battery data in Table 2 3 represents operation under room tem perature When operating under cooler conditions battery life will decrease CAUTION MAKE CERTAIN THE RESET OFF ON IR PULL SWITCH IS IN THE OFF POSITION BEFORE INSTALLING BATTERIES Install either two 2 AA batteries or one 1 BA 5567 U lithium bat tery as follows Do not attempt to mix battery types in the compart ment 2 11 2 12 1 R
31. ith the objective lens cover removed 1 Ensure that the batteries are installed per paragraph 2 6 B 2 Don the head mount per instructions in paragraph 2 6 I NOTE Paragraphs 2 6 J 2 6 K and 2 6 L provide additional information required when installing the head mount with a protective mask PASGT or M1 helmet To make it easier to align the goggle eyecups and diopter eyepiec es to the eyes depress the socket release button See Figure 2 8 and slide the head mount socket all the way forward before attach ing the goggles 3 Align the PVS 7 s latch Figure 2 1 to the head mount socket See Figure 2 8 Press and hold down the latch lever while install ing the goggle into the head mount socket Release the latch when the goggle is fully engaged in the socket 2 22 4 Set your eye relief by depressing the socket release button and move the PVS 7 back toward your eyes until the eyecups comfort ably seal around your eyes 5 Turn the RESET OFF ON IR PULL switch ON 6 Adjust the interpupillary distance Figure 2 1 by sliding the eye pieces together or apart so each eye can observe the entire field of view at the same time The eyepieces adjust independently 7 Readjust the vertical strap assembly see Figure 2 7 for vertical adjustment of the head mount until the PVS 7 is properly aligned with your eyes NOTE The sharpest image will be observed only when the objective lens and both eyepieces are properly focused
32. led 2 9 SECTION Ill ASSEMBLY AND PREPARATION 2 10 2 6 PREPARATION FOR USE This chapter contains the information necessary to prepare the goggle for operation This includes unpacking examination for goggle damage battery installation sacrificial window installation and head mount installation and adjustments A Unpacking The following steps must be accomplished prior to each mission where the PVS 7 is used CAUTION RELIEVE AIR PRESSURE INSIDE SHIPPING AND STOR AGE CASE BY PRESSING RELIEF VALVE BUTTON LOCATED NEAR THE CARRYING CASE HANDLE BEFORE RELEASING LATCHES 1 Release the two latches securing top of shipping and storage case and open top 2 Check contents of shipping and storage case for completeness see Figure 1 1 3 Remove the carrying case from the shipping and storage case Open carrying case Figure 1 1 remove the PVS 7 and check con tents for completeness 4 Inspect the goggle for obvious evidence of damage to optical surfaces body eyecups RESET OFF ON IR PULL switch bat tery cap etc Ensure that all optical surfaces are clean and ready for use Clean with lens paper B Installation of Batteries CAUTION TO PROTECT THE IMAGE INTENSIFIED KEEP THE LENS CAP ON THE OBJECTIVE LENS WHEN THE GOGGLE IS NOT IN USE OR WHEN CHECKED OUT IN DAYLIGHT CONDITIONS NOTE Operation of the PVS 7 under daylight conditions will activate the high light cut off in 70 30 seconds causing the gog
33. n ad verse conditions SCINTILLATION A faint random sparkling effect throughout the image area Scintillation is a normal characteristic of the image intensifier assembly and should not be confused with emission points Scintillation is more pronounced under low light conditions Also called video noise SHADING The viewed image should be a full circle If shading is present you will not see a fully circular image Shading is indicative of a dying photocathode and is caused by a defective vacuum seal of the image intensifier Shading is very dark and you cannot see an image through it 1 4 ADMINISTRATIVE STOWAGE Administrative stowage of equipment should be done in the fac tory supplied container and after a thorough PMCS as outlined in Chapter 3 of this manual This will ensure the PVS 7 remains ina mission ready condition during storage 1 5 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 SECTION II EQUIPMENT DESCRIPTION 1 5 EQUIPMENT CHARACTERISTICS CAPABILITIES AND FEATURES The PVS 7 includes the items shown in Figure 1 1 See Table 1 1 and Figure 1 1 for Standard and Optional Equipment A Goggle Assembly The goggle assembly consists of four pri mary sub assemblies a simple objective l
34. nclude the power switch interpupillary adjustment release latch eye relief adjustment diopter adjustment IR spot flood focus optional compass illumination optional and objective lens fo cus The mechanical controls are identified in Figure 1 2 Objective Lens Focus Knob Diopter Adj Ring RESET OFF ON IR PULL Swith Knob IR Spot Flood Focus Knob Compass Illumination Button underneath O Figure 1 2 Mechanical Controls for PVS 7 1 9 OPTICAL AND ELECTRICAL FUNCTIONS The optical functions include an objective lens image intensifier a collimator lens and two eyepieces The objective lens collects light reflected from the night scene by the moon stars or night sky and inverts the image and focuses that image on the image intensifier The electrical functions include the following A Power Source The electronic circuitis powered by replaceable batteries either a 3 0 Volt lithium battery BA 5567 U or two AA 1 5 Volt alkaline batteries BA 305S U B Electrical Principles Power from the batteries is supplied to the components through the RESET OFF ON IR PULL switch as follows RESET OFF Position With the switch in the OFF position the cir cuit is not energized either to the image intensifier or the IR illumi nator Also turn the switch to this position to reset after automatic shutoff or high light cutoff ON Position Power is drawn from the battery compartment to ener gize th
35. ofthe buckle 2 Pull the strap through the buckle and tighten as necessary 3 Repeat steps 1 and 2 for any other straps and buckles that may have come undone Moveable a Sliding Bar Fixed Serrated Bar Figure 3 2 Lacing the Sliding Bar Buckles 3 7 APPENDIX A SYSTEM OPTIONAL EQUIPMENT Table A 1 System Optional Equipment DESCRIPTION QUANT PART NO Helmet Mount Assy ATN3256390 Objective Filter Assy LIF ATN5009737 Sacrificial Window Assy ATN3144264 Demist Shield Assy ATN31442632 5 Case Shipping Storage ATN3187393 Battery Lithium B 5567 U Y 3X A local Lens Assy ATN5009717 Kit Adapter 3X Afocal 7D ATN5009718 5X Afocal Lens Assy ATN5009719 10 Kit Adapter 5X Afocal 7D ATN5009720 11 Obj Lens 3X 7D ATN5009721 12 Obj Lens 4X 7D ATN5009722 13 Obj Lens 6X 7D ATN5009723 14 Sacrificial Filter Assy 75mm ATN3144265 15 Sacrificial Filter Assy 108mm ATN3144266 16 Sacrificial Filter Assy 162mm ATN3144267 T Lens Cover Assy 75mm ATN5009724 18 Lens Cover Assy 108mm ATN5009725 19 Lens Cover Assy 162mm ATN5009726 20 Tripod Adapter Assy 4X 6X ATN3187394 21 Shipping Case Assy ATN3187395 22 Mount Assy 7D SPH 5CG ATN3187396 23 ATN5009710 1 Hemetmountassy 2 Obieotverimerassy tF Objective Lens Assy 54mm FOR TECHNICAL INFORMATION ATN CORP 1341 San Mateo Avenue South San Francisco CA 94080 800
36. on on the bottom 2 26 Figure 2 4 Press button slightly with thumb until proper brightness is obtained The image should appear as shown in Figure 2 12 Figure 2 12 View Through Installed Compass NOTE Increase brightness slowly if brightness is increased too quickly excessive brightness may burn a temporary image into the image intensifier The goggle must be focused at or near infinite for proper compass operation 4 The compass readings should change when you move your head from side to side Rotate or tap compass slightly to ensure compass is operating correctly Hold the PVS 7 in a level position to assure live rotation of the compass scale WARNING THE COMPASS ILLUMINATOR CAN BE SEEN BY OTHERS USING NIGHT VISION DEVICES NOTE The compass reading is the magnetic North not true North The compass reading is within 2 of correct absolute magnetic bearing Compass readings with a mounted PVS 7 head mount or helmet mount can be up to 15 of correct absolute magnetic bearing This occurs most in the East 90 to West 270 and less in the North 0 to South 360 reading If the compass is inadvertently magnetized this could cause an additional 15 error 2 27 5 The tick mark closest to the center of the lighted display is the compass bearing The tick marks are in degrees with longer marks every five degrees and bearing labels every 10 degrees E Use of the or 5X Magnifier Lens Assembly The
37. rate it under normal conditions The function of controls and indicators is explained CAUTION THE PVS 7 IS A PRECISION ELECTRO OPTICAL INSTRUMENT AND MUST BE HANDLED CAREFULLY AT ALL TIMES 2 2 CONTROLS AND INDICATORS The PVS 7 is designed to adjust for different users and corrects for most differences in eyesight The controls and indicators for the PVS 7 are shown or described in Figure 2 1 and Tables 2 1 and 2 2 Figure 2 1 PVS 7 Controls and Indicators Table 2 1 Controls and Indicators ITEMS CONTROLS AND INDICATORS RESET OFF ON IR PULL NOTE FUNCTIONS Controls goggle and IR light pow er ON or OFF RESET OFF Same as system OFF Also resets goggle after au tomatic shutoff or highlight cutoff ON Goggle activated IR PULL Pull switch out and turn clockwise to activate goggle and IR LED indicator in left eyepiece Some PVS 7 s contain an additional momentary IR function For momentary IR continue to turn the switch knob clockwise past ON and without pulling The switch will return to the ON position when released RESET OFF ON Defines the switch positions IR PULL Label IR Spot Flood Lens Compass tor Button Focuses the IR light for a narrow beam spot or wide angel flood beam illumination Pressing this button activates the compass illuminator LED which makes compass readings visible in the goggle viewing area Ad ditional pressure will make
38. rocedure to remove and replace the brow pads CAUTION FOR PROTECTION OF THE IMAGE INTENSIFIER DISCONNECT THE PVS 7 FROM THE HEAD MOUNT PRIOR TO REPLACING BROW PADS 1 Firmly grasp the head mount and remove the old brow pad 2 Gently press on the new brow pad Lightly smooth out any wrin kles in the new brow pad B Neck Pad Re installation During operation of the goggle it is possible for the neck pad to become separated from its position on the headband Perform the following procedure to reinstall the neck pad 1 Lift the upper headband strap retention tab see Figure 3 1 al lowing the neck pad strap to be inserted underneath 2 Slip the neck pad strap all the way under the upper strap reten tion tab and then pull the lower part of the neck pad strap under the lower strap retention 3 6 Lower Strap Retention Tab Lower Strap Retention Tab Lower Strap Retention Tab Figure 3 1 Re installing the Neck Pad 3 Repeatsteps 1 and 2 forthe other side ofthe headband and neck pad if necessary C Lacing the Sliding Bar Buckles While donning and adjust ing the head mount it is possible for a strap to slip out of a slide fastener Perform the following procedure to replace the strap and sliding bar buckle 1 Thread the strap from the inside of the buckle over the move able sliding bar see Figure 3 2 Thread the strap back through the buckle but this time under the sliding bar and over the serrated part
39. s OBJECTIVE LENS FOCUS KNOB Rotate objective lens focus knob to ensure free move ment range is approximately 1 3 turn NECK CORD amp LENS CAP Check for cracked torn or missing lens cap Inspect cord for cuts damage or frayed ends Re tie ends if neces sary Mo Tratar spectiordamage INTERVAL amp SEQUENCENO B 11 D A ITEM TO BE INSPECTED PROCEDURE RESET OFF ON IR PULL SWITCH Remove any batteries and turn the switch from RESET OFF to ON or IR PULL Each position should have a definite stopping point Inspect for bro ken or missing knob HEAD MOUNT 12 STRAPS AND PADS Check for cuts tears fraying holes cracks or defective fasteners SOCKET Check for dirt dust or corrosion Insert goggle latch into socket to verify secure attachment of goggle to head mount If neces sary clean socket with water FORE AND AFT ADJUSTMENT Press the socket release button and check for free mo tion Inspect for damage OPTIONAL HELMET MOUNT 15 STRAPS Inspect for cuts tears fraying holes cracks or defective fasteners SOCKET Check for dirt dust or corrosion Insert goggle latch into socket to verify secure attachment of goggle helmet mount If neces sary clean socket with water FORE AND AFT ADJUSTMENT Press the socket release button and check for free mo tion Inspect for damage FLIP UP AUTO OFF With goggle on flip up and verify auto off function operation 2 7 2 8
40. sliding the PVS 7 fore or aft to obtain a full field of view of the image Readjust the diopter rings for the best image 2 24 NOTE Any readjustment of eye relief requires readjustment of the diopter rings 9 Adjust the objective lens focus Figure 2 1 while observing an object until the sharpest image is obtained 10 To flip up place an open hand under the goggle grasp the goggle and rotate up and rearward until the latch is firmly engaged Figure 2 11 Figure 2 11 Flip up Helmet Mount NOTE The PVS 7 will be turned off automatically when flipped up The PVS 7 will not turn on automatically when flipped down 11 To flip down grasp the goggle housing and rotate down and forward until the latch is firmly engaged 12 Turn the switch to the RESET OFF position then to the ON posi tion to resume viewing C Hand Held Operation CAUTION OPERATE THE PVS 7 UNDER DARKENED CONDITIONS ONLY OR USE HE LENS CAP TO COVER THE OBJECTIVE LENS FOR DAYLIGHT CONDITIONS NOTE When using the PVS 7 without a mounting device make sure to place the neck cord around your neck 2 25 1 Ensure that the batteries are installed per paragraph 2 6 B 2 Turn the RESET OFF ON IR PULL switch to ON 3 Adjust the interpupillary distance Figure 2 1 by sliding the eye pieces together or apart so each eye can observe the entire field of view at the same time The eyepieces adjust independently NOTE The sharpest image will be observe
41. ttons and care fully move the goggles fore or aft until the eyecups comfortably seal around the eyes Readjust the helmet straps as required for vertical adjustment 4 Turn power switch to ON Adjust the tilt by using the tilt adjust ment lock knob Figure 2 1 until you obtain a comfortable viewing angle 5 Adjust the interpupillary distance Figure 2 1 by sliding the eye pieces together or apart so each eye can observe the entire field of view at the same time The eyepieces adjust independently If necessary readjust the eye relief NOTE The sharpest image will be observed only when the objective lens and both eyepieces are properly focused The objective focus adjustment is used to focus on objects at varying distances The diopter adjustment rings are used to focus your eyes with or with out glasses on the image intensifier screen These adjustments operate independently and must be made separately 6 Fold the right eyecup over the eyepiece with your right thumb or forefinger to obstruct view through the right eyepiece Rotate the left diopter adjustment ring for the clearest view on the image in tensifier screen 7 Fold the left eyecup over the eyepiece with your left thumb or forefinger to obstruct view through the left eyepiece Rotate the right diopter adjustment ring for the clearest view on the image in tensifier screen K Adjust the eye relief distance by pressing the socket release but ton see Figures 2 1 and
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