Luna Optics LN-PBG1-PRO - Manual (Page 6)

TURNING THE UNIT ON AND OFF:
Your night vision unit has one-touch push-buttons. To turn the
unit ON, first remove the objective lens covers, (ONLY IN THE
DARK!) and press the power button (11) until the little red (in
some models – green) light indicator located on the back of the
unit lights up. Look through the ocular (2) – you should see
green glow. Even if the image is not yet sharp, the unit is
operating. To turn the unit OFF, press the power button again
and make sure the green light indicator is off. The green glow
will continue for up to several minutes, depending on the outside
light conditions. This is normal. Always replace the objective
lens covers after the unit is turned off and no longer is in use.
FOCUSING THE UNIT:
To obtain the sharp image, you must first rotate each ocular (2)
in either direction, until you notice in which position the image is
at its best. After that, rotate each objective lens (9) also until
the image is at its best. We recommend adjusting one eye at a
time, while closing the second eye. You may have to repeat the
process again, until the image is sharp and clear. Once the clear
image is obtained, you no longer need to adjust the oculars, just
rotate the front objective lenses to adjust the distance to the
object you are viewing.
USING INFRARED ILLUMINATOR:
Your night vision binocular is equipped with a built-in Infrared
illuminator light (8). This light operates in a spectrum, which is
normally invisible to a human eye, however with the help of the
tube, located inside the unit, you will see a beam of light when
looking though the ocular lens. This Infrared light is here to
assist you in especially dark conditions, where there is not
enough light for the tube to amplify.
To turn the Infrared illuminator ON, press the Infrared
illuminator button (10). To turn the infrared light off, press the
same button again. Please note that the infrared beam can be
focused by rotating the infrared illuminator lens barrel (8).
Narrowing the beam will increase the viewing distance and
widening the beam would allow wider field of illumination over
short distances.
When using the infrared illuminator it is important to remember
that like a flashlight, it is brightest when used in short distances.
As the distance increases, the intensity of the infrared light fades
away.