Application, Operation, Focusing

APPLICATION

The Viper Night Vision Scope is a complex opticoelectronic system for individual use. The device consists of (see above figure) the objective lens assembly, eyepiece and the body. The body contains a 1st Gen.+ image intensifier tube assembly with an integrated high voltage power source and the three volt battery housing. When installing the battery one should keep in mind that the polarity of the battery should coincide with the diagram on the body next to the battery housing cap.

Objective lens protective cover (not shown) is intended to protect the objective lens from dust and scratches. It also will act as a daylight filter, allowing you to test the scope in daylight or other bright light situations. The pinhole in the center of the protective cover allows the user to check the operation ability of the device in daylight conditions.

NOTE: Do not test the scope in daylight conditions even with the daylight filter/lens cap on for more than ten (10) minutes.

The device is powered up by sliding the switch on the rear of the unit labeled “PWR”. You may notice a persistent green glow for up to five (5) minutes after you have turned the unit off. This is normal for the 1st Gen. light intensifier tube.

OPERATION

•Take the monocular out of the case.

•Install the battery into the housing with the polarity order as shown on the scope. Battery Type: 3 Volt Lithium, #CR123A .

•Slide the switch to turn the unit on with the protective lens cover still attached to the lens. Do not turn the unit on in the daytime without the protective lens cap on. You should see green glow in the eyepiece.

•Observe the scene and adjust the diopter for optimal image clarity.

•You may now enter a dark environment or simply shut the lights off in order to darken the room.

•Next, remove the lens cap/daylight filter. Adjust the front lens for the distance of the focus. You should not have to readjust the diopter.

FOCUSING

To focus the Viper, first you will need to adjust the diopter. Simply turn the diopter clockwise until it stops. Then, while looking throught the diopter at an object, slowly turn the diopter back counter clockwise until the grain in the image is sharp.

NOTE: We suggest that you focus the diopter during daylight with the filter on.

Next focus the front lens until the image and the grain are both sharp. When you are in low-light conditions and the daylight filter is off, you may focus the front lens to receive sharp image, the diopter should not be adjusted.

NOTE: The front lens should be readjusted as you view objects at different distances.