
NVG Lighting Conformity Test Kit
Hoffman’s LM-33-550

OVERVIEW
The NVG Lighting Conformity Test Kit (HEC p/n LM-33-550) provides the equipment components, processes, and procedures for testing NVG modified cockpits. It provides standardized components for repeatable test results to ensure compliance with regulatory guidance in the Instructions for Continued Airworthiness of a NVG Lighting Original Equipment Manufacturer (OEM).
NSN: 6920-01-608-0636
KEY FEATURES
- Standardized components for repeatable test results
- Durable
Reliability
- Unlikely failure
- Durable
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NVIS Light Leak Filter Kit
Hoffman’s NVG-105 Light Leak Filter Kit

OVERVIEW
Hoffman’s NVG-105 Light Leak Filter Kit is an easy solution for converting your existing ANVIS-6, ANVIS-9 or F-4949 Night Vision Goggles into an Inspection Scope for light leak checks.
In the event of a failure to pass the NVG Conformity Test, Inspection Scopes are a required tool for identifying light leaks per DO-275. The NVG-105 utilizes a precise filter that allows the user to identify non-compliant devices that would decrease night vision goggle visual acuity. The kit is an easy to use, cost-effective way to evaluate a crew station lighting to ensure flight safety.
Ideal scenarios for NVG-105 use include:
- Preflight inspection
- Recurring inspections
- Evaluation of newly installed instruments
- Evaluation after instruments have been serviced and/or repaired
- Local protocol for aircraft inspection
KEY FEATURES
- Easy to use
- Cost effective
- Identifies light leaks per DO-275
Reliability
- Easy to use
- Durable
- Ensures flight safety
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NVG Helmet Mount Circuit Analyzer
Hoffman’s ANV-060

OVERVIEW
The ANV-060 is a simple low cost system designed to provide users the ability to verify proper operation of the AN/AVS-9 and AN/AVS-6 Battery Circuits.
This test set uses standard goggle component interfaces making the system easy to use and assure accurate electrical assessment. The system streamlines the required preventative maintenance checks and service of helmet mount assemblies while eliminating possible electrical or physical damage to the assemblies during testing. The system will evaluate HGU-55/P helmet mount assemblies used with F4949 Night Vision Goggle models C, D, G & L. The standard ‘AA’ battery cartridge allows the system to evaluate SPH-4AF helmet battery packs used with F4949 models F & H and AN/AVS-6. The system requires annual calibration done by Hoffman Engineering’s NIST traceable laboratory and complies with the testing requirements called out in Air Force TO-12S10-2AVS9-2 and Navy NAVAIR-16-35AVS9-2.
A U.S. State Department export license is required for all international sales
KEY FEATURES
- Simple
- Low cost
- Verifies proper operation of the AN/AVS-9 and AN/AVS-6 Battery Circuits.
Reliability
- Unlikely failure
- Complies with the testing requirements called out in Air Force TO-12S10-2AVS9-2 and Navy NAVAIR-16-35AVS9-2
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Helmet Mount Circuit Continuity Tester
Hoffman’s ANV-055

OVERVIEW
Hoffman Engineering, the recognized leader in the design and manufacture of Night Vision Device test and maintenance equipment, introduces a unique new test clip to verify Helmet Mount battery circuit continuity.
The ANV-055 is a simple, low-cost system designed to provide maintainers of Night Vision Devices with the ability to verify proper operation of the AN/AVS-9 and AN/AVS-6 Battery Circuits without the use of test probes and a multimeter. This test clip uses standard goggle component interfaces making the system easy to use and assuring accurate electrical continuity assessment. The system streamlines the required preventative maintenance checks and service of helmet mount assemblies. The ANV-055 will evaluate all mounts in which standard ANVIS helmet mount assemblies are used. The Battery Circuit Continuity Tester requires no annual calibration and complies with the testing requirements for 90 and 180-day checks.
KEY FEATURES
- Simple, low cost system
- Verifies proper operation of the AN/AVS-9 and AN/AVS-6 Battery Circuits
Reliability
- Simple to use
- No power requirements
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Product Specification
| Operation | Stand Alone |
| Power Requirements | None |
| Weight | 4 oz. |
| Ordering Codes | ANV-055 |

Image Tube Test Adapter
Unique Adapter System

OVERVIEW
The ANV-126-7XX is a unique adapter system designed to provide users of the ANV-126 and ANV-126A Night Vision Device Test Sets with the ability to verify the performance of AN/AVS-9 and AN/AVS-6 Image Intensifier tubes.
The test set adapter encloses the image intensifier in standard goggle optics to simulate system performance, making the device easy to use and assuring accurate assessment. The system streamlines inspection, maintenance and performance checks while eliminating possible electrical or physical damage to the intensifiers during testing. Adapters are available for a number of different Image Intensifiers. Please contact a Hoffman Engineering Representative to discuss your specific needs.
KEY FEATURES
- Verifies the performance of AN/AVS-9 and AN/AVS-6 Image Intensifier tubes.
- Adapters are available for a number of different Image Intensifers
Reliability
- Unlikely failure
- Durable
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Product Specification
| Part Number | NSN |
| ANV-126-700 | 5855-01-559-7611 |
| ANV-126-701 | 5855-01-615-5185 |
| ANV-126-702 | 5855-01-615-5183 |

Hoffman Test Kit Calibration Set
Hoffman’s ANV-126-085 Calibration Set

OVERVIEW
Hoffman’s ANV-126-085 Calibration Set is designed to calibrate the ANV-126-001, ANV-126A-001 and ANV-20/20 in the field.
These systems all require an annual calibration for operation. By using this system, the ANV-126-085, you will be able to calibrate your equipment in the field with only the need to send the ANV-126-085 Calibration Kit back once a year for service. The advantages of using this equipment include time saved during shipment of equipment back and forth for calibration, reduced chance of damage to equipment during shipment, easier maintenance of equipment in overseas locations and long term savings through a reduction in calibration expenses. The equipment is simple to use and comes with a step by step manual. For more information please contact a Hoffman Representative.
NSN: 6625-01-394-7760
KEY FEATURES
- Durable
- Designed to calibrate the ANV-126-001
Reliability
- Easy maintenance of equipment
- Comes with a step by step manual
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NVD Test Set Field Upgrade
Hoffman’s ANV-126A Digital NVD Test Set

OVERVIEW
Hoffman’s ANV-126A Digital NVD Test Set is available as an “In the Field” upgrade to your existing ANV-126-XXX NVD Test Set.
The upgrade configuration is performed at your location by your PMEL (or equivalent) swapping out the Primary Module with a new Digital Module and then returning the old module back to the factory. This upgrade does not require the purchase of new items for the unit as existing ANV-126 accessories are fully compatible to the new Digital Configuration allowing you to keep your existing accessories and case.
*The ANV-126A-UG/F is also available as a “Factory” Upgrade. Special ordering instructions apply.
Please contact your Hoffman Representative for additional information.
NSN:6625-01-531-4083
KEY FEATURES
- Available as a ‘Factory’ Upgrade
- Durable
Reliability
- Unlikely failure
- Durable
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Image Tube Gain Test Set + EBI Test
Night Vision Image Tube Photometric Test System

OVERVIEW
Hoffman’s Night Vision Image Tube Photometric Test System, ANV-110GE, is a self-contained system designed to perform the Photometric Tests required to verify the performance of Night Vision Image Intensifier Tubes.
Test capabilities of the ANV 110GE include: Equivalent Background Illumination (EBI); Luminance Gain; Signal-to-Noise Ratio; Photocathode Output Brightness and Uniformity; Saturation Luminance. The ANV-110GE utilizes a modified 1980A photometer optical head in conjunction with an ultra-stable precision sphere-based light source and computer-based electronics and control system.
NSN: 6625-01-570-8686
KEY FEATURES
- Self contained system
- Designed to perform the Photometric Tests
Reliability
- Ultra-stable precision sphere-based light source
- Computer-based electronics
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Image Tube Quality Test Set
Night Vision Image Tube Quality Test System

OVERVIEW
Hoffman’s Night Vision Image Tube Quality Test System, ANV-110DQ, is a self-contained system designed to perform the Image Quality tests required to verify the performance of Night Vision Image Intensifier Tubes.
Test capabilities of the ANV-110DQ System include: Center and Peripheral Resolution (High Light and Low Light); Image Quality (Dark/Bright Spots, Chicken Wire); Distortion; Fixed Pattern Noise; Cathode Diameter and Halo. Each of these tests has a unique reticle, selectable on a 6-position reticle wheel. The ANV-110DQ optical system provides the necessary optics to accurately project the selected reticle onto the Photocathode of the image tube under test. The optical system also allows the operator to focus the image onto the photocathode without changing the magnification of the reticle image. The ANV-110DQ features a proprietary Image Tube Holder system to correctly position and provide power to the Image Tube under test. Image Tube Holders are available for most commonly available image tube types*. The ANV-110DQ also features an accurate and stable light source for testing image quality and resolution. A stereo-zoom microscope is provided to view image quality and measure defect sizes using interchangeable eyepiece reticles.
NSN: 6625-01-570-8685
KEY FEATURES
- Center and Peripheral Resolution
- Image Quality
Reliability
- Accurately projects the selected reticle
- Reliable
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NVD Gain Bench
Night Vision Device Gain Bench

OVERVIEW
The ANV-120A Night Vision Device (NVD) Gain Bench consists of a 12-inch integrated sphere with a special low-light-level lamp source and variable aperture.
An amplified detector probe with adapters that fit over the eyepiece of the goggle or night scope under test, and an electronics console which provides power and display functions for the set.
The system is self-contained for measurement of goggle gain in terms of output luminance per unit of input luminance. The test set digital displays indicate source lamp current, source luminance, in footlamberts, output screen luminance in footlamberts, goggle voltage and current demand, and system gain. The lamp source housing has a series of fixed and variable apertures, which attenuate the light entering the sphere from a 10-watt quartz-halogen lamp. The amount of light projected into the sphere is controlled by a log taper aperture driven by a micrometer. Nearly all NVD types can be tested through the use of eyepiece and objective ANV-126AXXX adapters that are sold separately. The ANV-120A is a laboratory grade instrument with complete system calibration and NIST traceability.
NSN: 6625-01-600-5524
A U.S. State Department export license is required for all international sales
KEY FEATURES
- Special low-light-level lamp source
- Variable aperture
Reliability
- Unlikely failure
- The lamp source housing has a series of fixed and variable apertures
Product Specification
| Configuration | 12” Sphere Light Source (monitored)
Gain Detector Module Control Console with power supplies for sphere and NVD |
| Light Source Range | 2 X 10-3 to 5 X 10-6 Footlamberts at 2856K |
| Monitor Resolution | Source Monitor, 1 X 10-7 Footlamberts |
| Max. Scale | 1.9999 X 10-3 Footlamberts |
| Color Temp | Adjustable, 2856 Kelvin Nominal |
| Spectral Distribution | Within 10% at 2856K Between 450nm and 900nm |
| Source Accuracy | Within 3% of NIST Standard at 2 X 10-3 Fl
Within 4% of NIST Standard at 2 X 10-5 Fl |






