AGM Global Vision NVG-40 User manual

USER MANUAL
NVG-40
NVG-50
NIGHT VISION GOGGLES/BINOCULARS

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AGM Global Vision, LLC
173 West Main Street
PO Box 962
Springerville, AZ 85938
Tel. [phone]
[e-mail]
www.agmglobalvision.com
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2021.05.12

3 NVG-40 / NVG-50 USER MANUAL
LIST OF CONTENTS
TITLE PAGE
Safety Summary 4
SECTION 1. GENERAL INFORMATION 6
1.1 System Description 6
1.2 Key Features 7
1.3 Standard Components 8
1.4 Optional Equipment 9
SECTION 2. OPERATING INSTRUCTIONS 10
2.1 Installation and Mounting 10
2.2 System Controls 11
2.3 Operating Procedures 13
SECTION 3. MAINTENANCE 22
3.1 Maintenance 22
SECTION 4. WARRANTY INFORMATION 24
4.1 Warranty Information and Registration 24
SECTION 5. SPECIFICATIONS 27
5.1 Specifications 27
APPENDIX 29
A. Spare Parts List 29

4 AGM Global Vision
SAFETY SUMMARY
• Read and follow all instructions
• Read all warnings
• Only use the attachments/accessories specified by the manufacturer
• All service must be provided by the manufacturer
WARNING:
This product contains natural rubber latex, which may cause potentially
fatal allergic reactions! If you are allergic to latex, it is important that you
strictly avoid exposure to products that contain it.
WARNINGS:
The intensifier’s phosphor screen contains toxic materials.
Please note:
• If the intensifier tube breaks, be extremely careful to avoid inhaling the
phosphor screen material. DO NOT allow the material to come in contact
with your mouth, eyes, or any open wounds on the skin.
• If the phosphor screen material comes in contact with your skin, wash it
off immediately with soap and water.
• If you inhale or swallow any phosphor screen material, drink a lot of
water, induce vomiting, and seek medical attention as soon as possible.
WARNINGS:
• DO NOT DISASSEMBLE THE DEVICE. Disassembly can cause permanent
damage.
• Use of the NVG-40/NVG-50 in brightly light conditions and in the places
with bright light sources such as firelight, headlights, searchlights, etc.
can damage the unit’s intensifier tubes. Avoid exposing the unit to these
types of light sources.
• When operating the device in extremely dark conditions, the light from
the unit’s IR illuminator will be invisible to the unaided eye. However, the
light can be detected by other night vision devices (NVD).
• To reduce the risk of detection by another NVD, avoid prolonged
activation of the IR illuminator.
• The IR light is more easily detected by an NVD when used in smoke, fog
and rain. Avoid prolonged activation of the unit’s IR illuminator in these
conditions.

5 NVG-40 / NVG-50 USER MANUAL
CAUTIONS:
• The NVG-40/NVG-50 is a precision optical instrument. To prevent
damage to the unit, it should always be handled carefully.
• Do not scratch the external lens surfaces or touch them with your
fingers.
• To protect the image intensifier, keep the lens cap securely fitted over
the objective lens when the device is not in use, or when it is being used
in daylight conditions.
• Keep the equipment clean. Protect it from moisture, dramatic
temperature drops, and electrical shocks.
• DO NOT force the equipment controls past their stopping points.
• DO NOT leave the equipment activated during breaks in operation.
• DO NOT store the equipment with the batteries installed.
• Thoroughly clean and dry each item before placing them into the storage
case.
NOTES:
• Do not test the device in daylight conditions for more than ten (10)
minutes, even with the daylight filter/ lens cap on.
• The purpose of the built-in IR illuminator is to provide additional
illumination when necessary while viewing scenes at close distances
(up to 3 meters).
• The equipment requires some ambient light (moonlight, starlight, etc.)
to operate.
• Performance of the device in night-time conditions depends on the level
of ambient light in the environment. Please remember the following:
–The level of ambient light is reduced by the presence of clouds, shade,
or objects that block natural light (trees, buildings, etc.).
–The equipment is less effective when operated in shadows and other
darkened areas.
–The equipment is less effective when operated in rain, fog, sleet, snow,
dust or smoke.
–The equipment will not “see” through dense smoke.

6 AGM Global Vision
1 GENERAL INFORMATION
1.1 SYSTEM DESCRIPTION
The AGM NVG-40 and NVG-50 are a dual-channel night vision systems.
The NVG-40/NVG-50 utilizes the principle of intensification of the residual
light that is reflected from the surrounding objects. The optical system of
the unit consists of two monocular channels, each consisting of a lens, an
image intensifier tube (IIT), and an eyepiece.
This device operates with a single gain control knob for both channels.
Each unit allows for vertical adjustment (using the head or helmet mount),
fore-and-aft adjustment, objective lens focus, eyepiece focus, and
interpupillary distance adjustment. The binoculars are equipped with an
infrared (IR) light-emitting diode (or illuminator) to provide additional
illumination for reading a map. The binoculars are also equipped a low
battery indicator, a bright light cut-off system indicator, and IR illuminator
indicator in the field of view of device.
2
9
1
3
4
5
6
78
10 11
FIGURE 1-1. NVG-40/NVG-50 SYSTEM DESCRIPTION

7 NVG-40 / NVG-50 USER MANUAL
TABLE 1-1. NVG-40/NVG-50 SYSTEM DESCRIPTION
ITEM DESCRIPTION ITEM DESCRIPTION
1 Lens Cap 7 Turn-Pull Operating Switch
2 Focus Ring 8 Mounting Bracket
3Photoreceiver 9Interpupillary Distance
Adjustment Knob
4 Battery Cap
5Gain Control Knob 10 Diopter Adjustment Ring
6 Built-In IR Illuminator 11 Eyepiece
1.2 KEY FEATURES
• Rotating binocular design allows low profile against helmet when in
stowed position and ability to use as a single monocular
• Binocular design for sustained viewing periods and improved depth
perception
• Manual system gain and focus adjustments for custom image qual-
ity optimization
• Auto OFF when stowed; resumes power when deployed
• Integrated infrared (IR) illuminator
• Head or helmet-mountable
• Low-battery, bright light cut-off, and IR indicators in eyepiece
• Self-contained system operating on a single AA or CR123 battery
• Optional remote battery pack for extended use
• Limited 3-year warranty

8 AGM Global Vision
1.3 STANDARD COMPONENTS
The standard components of the NVG-40/NVG-50 are shown in Figure 1-2
and listed in Table 1-2.
The ITEM column indicates the number used to identify items in Figure
1-2.
TABLE 1-2. NVG-40/NVG-50 STANDARD COMPONENTS
ITEM DESCRIPTION QUANTITY
1Night Vision Binocular 1
2 Lens Cap 1
3 Mounting Bracket (preinstalled NVG Interface Shoe) 1
4Eyecup 1
5Demist Shield 2
6Sacrificial Window 2
7Bayonet/Horn Interface Shoe 1
8Battery 1
9Lens Cloth 1
10 User Manual 1
11 Soft Carrying Case 1
FIGURE 1-2. NVG-40/NVG-50 STANDARD COMPONENTS
21
34
8
9
10
6
11
57

9 NVG-40 / NVG-50 USER MANUAL
1.4 OPTIONAL EQUIPMENT
The optional equipment of the NVG-40/NVG-50 is shown in Figure 1-3 and
listed in Table 1-3.
The ITEM column indicates the number used to identify items in Figure
1-3.
TABLE 1-3. NVG-40/NVG-50 OPTIONAL EQUIPMENT
ITEM DESCRIPTION PART NO.
1Battery Pack 6108BPA1
2
Battery Pack Kit G50 (comes included with
Battery Pack, NVG Interface Shoe with
Connector, Velcro®Battery Case Holder)
6108EBP1
3 Battery Locking Plate Adapter 6108BLP1
4 NVG Interface Shoe with Connector 6108ISC1
5Mini-Rail Interface Shoe 6506MRN1
6 Goggle Kit W-G50 6104GK51
7Helmet Mount G50MP for MICH and PASGT
Helmets
6103HM51
8 Helmet Mount G50S for Shroud 6103HS51
9
Sioux850-W kit (includes Sioux850 Long-
Range Infrared Illuminator, Mount, Adapter,
Rechargeable Battery and Charger)
501SIOUW850IR1
10 Hard Case for Storage/Transportation 6610HCS1
FIGURE 1-3. NVG-40/NVG-50 OPTIONAL EQUIPMENT
10
9
12346
5
78

10 AGM Global Vision
2 OPERATING INSTRUCTIONS
2.1. INSTALLATION AND MOUNTING
CAUTION:
To protect the intensifier tube when the sight is not in use or when it is
being operated in daylight, keep the protective lens cap securely fitted
over the lens.
2.1.1 BATTERY INSTALLATION
The NVG-40/NVG-50 operates on a single CR123A or AA battery. This is
possible by repositioning the battery adapter in the battery cap.
Low Battery Indicator
When the binoculars are ON, a flashing red LED indicator in the eyepiece
viewing area indicates that the battery is low. This indicator provides an
alert the user to replace the battery.
CR123A Battery Installation
1. Unscrew the battery cap (A) and insert (B) the CR123A battery (C),
observing the polarity markings (D) on the body of the device.
2. With the battery adapter installed, screw the battery cap back on
securely.
FIGURE 2-1. CR123A BATTERY INSTALLATION
A
D
C
B

11 NVG-40 / NVG-50 USER MANUAL
AA Battery Installation
1. Unscrew the battery cap(A).
2. Unscrew the battery adapter (B) from the cap (A), turn it around, and
screw in the other end.
3. Insert the AA battery (C), observing the polarity markings (D) as
indicated on the body of the device.
4. Screw the battery cap back into place.
2.2 SYSTEM CONTROLS
2.2.1 TURN-PULL OPERATING SWITCH
The turn-pull operating switch performs the following functions:
• Activates the NVG-40/NVG-50 when turned to ON.
• To activate built-in IR illuminator, pull switch out and turn to IR position.
The IR illuminator will activate on, and red LED indicators in both
eyepieces will glow. Rotate the switch to ON position to deactivate the
IR.
• Deactivates the NVG-40/NVG-50 when turned to OFF position.
2.2.2 DIOPTER ADJUSTMENT RINGS
The diopter adjustment ring allows a user to alter the viewfinder to
accommodate that individual’s eyesight for optimum image sharpness.
NVG has a separate adjustment for each eyepiece. While looking through
the eyepiece, rotate the diopter adjustment ring to optimize the sharpness
of the image in the viewfinder.
FIGURE 2-2. AA BATTERY INSTALLATION
A
D
C
B

12 AGM Global Vision
2.2.3 FOCUS RING
Bring the object into focus by turning the objective focus ring (counter
clockwise for far focus, clockwise for near focus, if you look in the
eyepieces). Rotate the focus ring until the subject looks sharp in the
viewfinder.
2.2.4 INTERPUPILLARY DISTANCE KNOB ADJUSTMENT
Adjusts the distance between each eyepiece by rotating the knobs
together or apart, allowing for each eye to observe the entire field at the
same time.
2.2.5 GAIN CONTROL KNOB
Used to adjust the gain (brightness) of the viewed image. Turn the gain
control to balance the illumination input to the eyes.
2.2.6 INDICATION
When the NVG-40/NVG-50 is ON, the color LED indicators can be shown
in the field of view. The color LEDs indicate the following states of the
device:
INDICATIONS COLOR OF LED IN THE FOV
Built-in IR illuminator is activated Red
Image intensifier tubes are exposed to
excessive levels of light Green
Battery is low Flashing Red
2.2.7 AUTO POWER OFF FUNCTION
The NVG-40/NVG-50 bright light cut-off feature shuts off power to the
binoculars when they are exposed to excessive levels of light for more
than 10 seconds.
Automatic shut-off system automatically turns off the device when it is
unused (controls are not touched) for 60 minutes. The automatic shut-
off function preserves battery life should the device be inadvertently
activated.

13 NVG-40 / NVG-50 USER MANUAL
2.3 PROCEDURES
2.3.1 OPERATING PROCEDURES
1. Verify that the battery is installed as indicated on the unit body.
NOTE:
Only operate the binocular in dark environments. If it necessary to
operate the device in daylight, use the objective lens caps to cover the
objective lenses. The pinhole at the center of the lens caps allows to
check the operation ability of the device in daylight conditions.
2. Remove the lens cap and place it over the housing of the lens.
3. Turn the function switch ON. After a slight delay, a green or white glow
will appear in the eyepiece of the unit.
4. Adjust the unit diopter by rotating the ring of the eyepiece.
5. Observe the scene. Rotate the focus ring until the image is clear and
sharp.
6. Adjust the brightness of the image using the gain control knob.
The NVG-40/NVG-50 can be used as one-eye observational unit by
choosing which side you want to use as your night vision monocular
and rotate the other unit up and out of the way. The power of unit will be
switched off in rotated up position and it will be on automatically when
returned back to the working position.
STOWED POSITION
MONOCULAR GOGGLES POSITION
FIGURE 2-3. NVG POSITION

14 AGM Global Vision
NOTE:
If the automatic shut-off system turns off the device, turn the operation
switch to OFF position and then back to ON position for continuing
operation.
NOTE:
If the bright light cut-off feature turns off the device, the power will turn
on automatically when the level of light decreases.
2.3.2 IR ILLUMINATOR OPERATIONS
NOTE:
The built-in IR illuminator is designed to provide additional illumination
(when needed) while viewing scenes or targets from a short distance (up
to 3m).
To turn built-in IR Illuminator on, pull the operation switch out and turn it
from ON to the IR position.
Red LED indicators in field of view of both eyepieces will appear and
indicate the IR illuminator is operating.
Rotate the switch to ON position to deactivate the IR.
IR Illuminator will be switched off when both monocular units are rotated
to the side and upward. IR Illuminator will be on automatically when one of
monoculars returns to the working position.
2.3.3 OPERATING UNDER CHANGING LIGHT CONDITIONS
If the ambient light level exceeds the limit, the NVG-40/NVG-50 automatic
protective system will shut off the intensifier tubes. If a mission must
be carried out in changing light conditions, the user can shut down the
protective system manually by closing the photoreceiver.
NOTE:
DO NOT forget to open the photoreceiver after completing your mission.

15 NVG-40 / NVG-50 USER MANUAL
2.3.4 INSTALLING A MOUNTING BRACKET
TO THE NVG-40/NVG-50
The NVG-40/NVG-50 comes fully-
assembled with a dovetail type
NVG Interface Shoe. The NVG
Interface Shoe is attached to the
binoculars body with four flathead
socket cap screws.
To replace the NVG Interface Shoe
to other optional bracket, please
follow the instructions below:
1. Remove the four screws that
attach the bracket to the unit
body.
2. Remove the bracket.
3. Place a new bracket and affix
with four screws.
2.3.5 MOUNTING THE NVG-40/NVG-50 TO A
HELMET/ HEADGEAR ASSEMBLY
For hands-free use of the NVG-40/NVG-50, it can be installed to the AN/
PVS-7D, AN/PVS-14, AN/PVS-7A/C, AN/PVS-15, and AN/PVS-18 mounts,
or to the mounts with mini-rail interface. With the mount, the NVG can be
positioned directly in front of the user’s eyes, or flipped out of the field of
view.
NVG Interface Shoe (preinstalled) is used for installing the NVG-40/NVG-
50 to a either standard dovetail type headset and helmet mount.
A
B
FIGURE 2-4. INSTALLING
A MOUNTING BRACKET
FIGURE 2-5. DOVETAIL TYPE HELMET MOUNT

16 AGM Global Vision
Bayonet/Horn Interface Shoe is used for installing the NVG-40/NVG-50 to
a either standard bayonet/horn type headset and helmet mount.
NVG Interface Shoe with Connector is used for installing the NVG-40/
NVG-50 to either standard dovetail type headset and helmet mounts and
connecting the Battery Pack.
Adapter (Mini-Rail Interface Shoe) is used for installing the NVG-40/
NVG-50 to the Goggle Kit W-G50, Helmet Mount G50MP and Helmet
Mount G50S with mini-rail interface.
NOTE:
The power of NVG-40/NVG-50 will be turned off when the device is swing
up using the flip-up mechanism of Goggle Kit W-G50, Helmet Mount
G50MP or Helmet Mount G50S. The power will be on automatically when
device is returned back to the working position.
Install the necessary bracket to the NVG-40/NVG-50 per instructions in
paragraph 2.3.4.
FIGURE 2-6. BAYONET/HORN TYPE HELMET MOUNT
FIGURE 2-7. NVG-40/NVG-50 INTERFACE SHOE WITH CONNECTOR

17 NVG-40 / NVG-50 USER MANUAL
2.3.6 GOGGLE KIT W-G50
Mount the NVG to the Cap Goggle Kit W-G50 as follows (refer to Figure
2-8):
1. Put on the goggle kit. Adjust the goggle kit strap pads until the goggles
fit securely around your head. Remove the goggle kit.
2. Loosen the screw (A). While pushing down on the button (B), insert the
NVG rail into the guide (C) of the goggle kit bracket. Tighten the screw
(A).
3. Put on the goggle kit, now mounted with the NVG.
4. To adjust the equipment for greater comfort, loosen the screw (A) and
move the unit along the guide (C). With the button (E) pushed, move the
unit along the slide-rail (F) until the desired, most comfortable position
is reached.
5. The goggle kit has a flip-up mechanism. Push the button (D) of the
goggle kit bracket and lift the unit up until it reaches its top position.
The unit will automatically turn off when it reaches this position.
6. Push the same button (D) to lower the unit into the correct viewing
position. Turn the unit back on to continue your session.
To remove the NVG from the goggle kit, loosen the screw (A), push the
button (B), and slide the unit out of the bracket guide (C).
C
F
E
D
A
B
FIGURE 2-8. GOGGLE KIT W G50

18 AGM Global Vision
2.3.7 HELMET MOUNT G50MP
An optional flip-up Helmet Mount G50MP can be used to attach the NVG
to a helmet. The helmet mount fits the NVG securely onto helmet via a
rugged strapping device and grooved hooks. With the helmet mount,
the NVG can be positioned directly in front of the user’s eyes, or flipped
backwards, out of the field of view.
Mount the NVG to a helmet as follows (refer to Figure 2-9):
1. Attach the mount to the helmet.
2. Adjust and tighten the strap (A).
3. Loosen the screw (B). With the button (C) pushed down, insert the NVG
rail into the guide (D) of the helmet mount bracket. Tighten the screw
(B).
4. Put on the helmet with the NVG attached.
5. Push the button (F) and move the unit along the slide-rail (G) until the
most comfortable position is reached.
6. Adjust the mount for comfortable using. Loosen the screw (B) and move
the unit along the guide (D) for eye relief adjustment. Turn the lever (H)
and move the unit along vertical slide-rail until the most comfortable
vertical position is reached. Push the button (F) and move the unit along
the slide-rail (G) until the most comfortable position is reached.
A
H
G
F
I
C
B
D
E
FIGURE 2-9. HELMET MOUNT G50MP

19 NVG-40 / NVG-50 USER MANUAL
7. To remove the NVG and turn it around, push the button down (E) and lift
the unit up until it reaches the top position. Once it reaches this position,
the unit will turn off automatically.
8. Push the same button (E) to lower the NVG into the proper viewing
position. Turn the unit on to proceed with your mission.
To remove the NVG from the helmet mount, loosen the screw (B), push
down on the button (C), and slide the unit out of the guide (D). To remove
the flip-up mechanism from the helmet mount, loosen the lever (H), pull
the knob out (I), and slide the flip-up mechanism out of the vertical rail.
2.3.8 HELMET MOUNT G50S FOR SHROUD
An optional Helmet Mount G50S can be used to attach the NVG to a
helmet with a shroud. With the helmet mount, the NVG can be positioned
directly in front of the user’s eyes, or flipped backwards, out of the field of
view.
Mount the NVG to a helmet as follows (refer to Figure 2-10):
1. Attach the mount (A) to the shroud (B). Place the tab at the top of the
mount into the notch at the top of the shroud. Press down on the bottom
of the mount and snap it into the shroud.
2. Attache the NVG. Adjust position of the unit similar per instructions in
paragraph 2.3.7.
3. To remove the Helmet Mount G50S from the shroud, push the button
(C).
FIGURE 2-10. HELMET MOUNT G50S FOR SHROUD
A
B
C

20 AGM Global Vision
2.3.9 USING A BATTERY PACK
The NVG-40/NVG-50 with installed NVG Interface Shoe with Connector(A)
can be used in conjunction with the Battery Pack for longer run times.
When the Battery Pack is connected, it works in conjunction with an
internal power source.
When NVG-40/NVG-50 is used as goggle system, the Battery Pack (D) can
be installed with Battery Pack Bracket(E) or Velcro® Battery Case Holder
on the back side of the helmet.
The Battery Pack connects to the NVG Interface Shoe using the Lemo
connector(B) on the cable(C).
When NVG-40/NVG-50 is used as handheld NV binoculars, the Battery
Pack(A) can be installed with the Battery Locking Plate Adapter directly to
the NVG Interface Shoe with Connector(B).
A
B
C
D
E
FIGURE 2-11. USING A BATTERY PACK
FIGURE 2-12. USING AS HANDHELD NV BINOCULARS
AB