Operation; Focusing; Infra-Red Illuminator - ATN NVB5 Series User Manual

opeation
Diopter adjustment
Lens focus adjustment
• Observe the scene and adjust the diopter for optimal image clarity.
• You may now enter 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 focus. You need not
change the diopter adjustments meanwhile.
• To turn the unit off, push the button again by short press (less than 1.5 sec.).
focSing
To focus the NVB, first you will need to adjust the diopter. Simply turn the diopter clock-
wise until it stops. Then, while looking through the eyepiece at an object, slowly turn the
diopter counter-clockwise until the grain in the image is sharp.
NOTE: We suggest that you focus the diopter in the 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 environment and the daylight filter is off, you may focus the front lens to obtain
the sharpness of the image, leaving the diopter adjustments unchanged.
NOTE: The front lens may be readjusted as you view objects at different distances.
infa-ed illminato
Built-in IR illuminator
any light source, it may loose its effectiveness over a great distance.
To turn the IR off, again hold the button pressed for more than 1.5 sec.
NOTE: The IR will automatically turn off when the unit's power is off.
3
• Take the NVB 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 .
• Press the button (short press - less than
1.5 sec.) to turn the unit on with the protec-
tive 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.
Infrared illuminators, or IR illuminators, are
common for night vision. The IR light greatly
enhances the performance of the NVB while
remaining almost totally invisible to the naked
eye.
The NVB have a built-in IR with indicator "ON"
within the FOV. To turn the IR on, hold the
button pressed for more than 1.5 sec. It is
important to remember that the IR illumina-
tor is but an infrared light source, and like