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ERGONOMICS —

If you will be viewing for a long period of time,

a lighter product will be more comfortable. Also, where you
wish to carry your device will make a difference when deciding
on what size to purchase. 

PRACTICALITY —

If you will be using your system on camping

trips and other places where electricity is unavailable, make
sure the battery corresponding to that system is easily available
for purchase.

PRICE —

Famous Trails specializes in creating affordable prod-

ucts for their users, but prices can range from $199 to $10,000.
Think about how often and in what way you will be using your
product and thus how much you want to spend. A scope or
monocular for $2,500 would be a fantastic piece of equipment
to own, but you could also purchase a high definition system
that will satisfy all your needs for under $500.

A Glossary of Night Vision Terms

ANGLE OF VIEW —

the angle (in degrees) of your field of view

when looking through a device. 

BINOCULAR —

a device that contains two connected sets of

image intensifiers and optics that share a power source.

BLACK SPOTS —

black spots on an image possibly caused by

foreign substances on the surface of the lenses or marks within
the image intensifier. 

BLOOMING —

a situation where a part of the projection has been

overloaded with too much light.

BRIGHT-SOURCE or OVER-LIGHT PROTECTION

— a circuit that will

decrease or shut off power to a product when over-lighting
occurs, protecting the image intensifier. (Over-exposure to bright
light sources can decrease the life of your image intensifier)
Normal viewing will resume within one to two minutes.

DIOPTER —

a measurement unit for the refractive power of a

lens, either for a device or for the human eye.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for FT 300

Page 1: ...hat there are two focus rings on all of our units One is on the front lens and the other is located at the rear ocular where you put your eye Remember to handle your new Famous Trails Inc night vision device with some degree of care it s a high end piece of electronics Keep it away from water and always utilize the hand strap wrist lanyard to avoid any accidents Enjoy Famous Trails Inc Promise of ...

Page 2: ...265 Duracell DL1 3N Eveready 2L 76 FT 350 2 6x magnification The unit needs no battery simply depress piezo handle The detachable IR illuminator requires a 3v Lithium battery FT 400 Atlas 2 5x magnification Needs 2 AAA batteries Features a built in IR illuminator FT 700 Calypso 3 8x magnification Needs 2 AA batteries Features a built in IR illuminator Interchangeable lens FT 750 Calypso II 2 3x ma...

Page 3: ... COVER REMOVED Getting Started 1 Load batteries in battery compartment either on top or side depending on the unit Use either AAA or AA batteries 2 To use depress the Energizer button and release A gradual fading of the image is typical Press the Energizer button again to re power If your unit includes a self energizing power source i e does not require batteries simply depress and release the top...

Page 4: ...owever activat ing the unit during the daylight without the protection of the lens cover will cause too much light to hit the intensifier and can result in permanent damage There is a built in anti bloom function to protect against such an event but if the unit flashes upon being activated in a well lit environment it may require several minutes for the instrument to re set itself before it can be...

Page 5: ...00 800 900 800 900 System Gain 10 000 15 000 12 500 15 000 10 000 15 000 IR illuminator 23265 Radio Shack Night Vision Specifications FT700 FT750 FT950 Light Intensification High High High Image Magnification 3 8x 2 3x 5 0x Dimensions 7 75 l x 3 8 w x 2 6 h 6 5 I x 3 8 w x 2 6 h 9 4 I x 3 6 w x 2 4 h Weight 1 44lbs 1 5lbs 1 2lbs Batteries 2 AA 2 AA 1 AA Field Of View 15 degrees min 15 degrees min ...

Page 6: ...or can also be used in lowly lit areas enhancing images in changing light conditions with consistent performance These infrared illuminators are available on all of Famous Trails night vision products When testing night vision products Famous Trails measures the quality of the image the range of the product and gain Because it is difficult to make out smaller details if long distances or low light...

Page 7: ...won t need to worry about range if the product is used in total darkness but you will need an infrared illuminator We previously explained that the quality of the image the range of the product and the gain are all key in measuring how a Famous Trails product performs Here is a breakdown of how each area ties in with the operation of a product GAIN As conditions get darker it becomes more difficul...

Page 8: ...rds the edges The human eye is able to perceive contrasts in green more easily than in other colors so this further enhances image quality With less distortion you ll see a flatter less rounded view with a higher definition Additionally the contrasts will enable you to perceive dark objects against darker backgrounds and the increased resolution will allow you to see identifying details clearly in...

Page 9: ...e a high definition system that will satisfy all your needs for under 500 A Glossary of Night Vision Terms ANGLE OF VIEW the angle in degrees of your field of view when looking through a device BINOCULAR a device that contains two connected sets of image intensifiers and optics that share a power source BLACK SPOTS black spots on an image possibly caused by foreign substances on the surface of the...

Page 10: ... device occurs Tube gain is amplification taking place exclusively in the intensifier tube and it can reach 50 000 times or more It is not as useful a measurement as System gain which combines tube gain the power supply and optics System gain can register at 1 000 to 15 000 GALLIUM ARSENIDE gaAs a semiconductor substance used in a photocathode of Generation III night vision devices that contribute...

Page 11: ...h as an LED display that outputs in the near infrared range 750nm to 3um LENS SPEED the ratio of the focal length to the diameter of the lens A lower lens speed produces brighter images Expressed as f number MICROCHANNEL PLATE MCP the component located behind the photocathode that increases gain in Generation II and III Famous Trails systems by multiplying electrons MONOCULAR a device that contain...

Page 12: ...ctromagnetic energy ranging from 0 1mm x ray to 1 000mm far infrared The visible range within this span is from 400 to 750nm PHOTOCATHODE a component that changes light photon energy into electrons electrical energy which in turn move with increasing speed in the intensifier tube The objective lenses point light on the photoelectric surface of the photocathode which is excited and passes electrons...

Page 13: ... can see from 400nm to 750nm a Famous Trails system can pick up and amplify wavelengths up to 900nm and project an image of the viewed object onto its phosphor screen SPECTRUM see phototonic spectrum WAVELENGTH the distance covered by one cycle of a wave Electromagnetic energy is transmitted in sinusoidal waves Nanometers nm and Micrometers mn are units of measure in the photonic spectrum ...

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