4
INFRA-RED ILLUMINATION
(OPTIONAL)
Infra-red (IR) illuminators are common to
night vision. The IR light greatly enhances
the performance of Aries 208/238. While
remaining almost totally invisible to the
naked eye. The IR illuminator on the Aries
208/238 is located near the windage
and elevation adjustments. The switch to
operate the IR is located on the back of
the unit next to the main power switch.
In a dark environment, power up the Aries
208/238. Now, find a scene and examine
it without the IR on, and with the IR on.
Note the difference in illumination. It is
important to remember that the IR illumi-
nator is simply an infra-red light source,
and like any light source, it may loose its effectiveness over a great distance.
You may desire a different field of coverage from the IR illuminator, if so the beam is focusable.
By turning the lens of the IR illuminator you will change the beam width slightly.
NOTE:
The IR will automatically turn off when the unit’s main power switch is turned to the “off”
position, so you don’t have to worry about leaving it on.
OPERATING
The objective lens gathers the image of the observed picture (object, landscape, etc.) to the
image intensifier tube photocathode. The intensified image is then formed on the phosphor
screen. Next, the image is magnified by the ocular lens (eyepiece) giving you the intensified
image.
TROUBLESHOOTING
Q:
Flashes, flickers or clicking occur while operating
S:
If it occurs within the first five minutes of inserting new batteries, it is normal and the device
will resume normal operation soon thereafter. If it occurs for more than 10 minutes, contact
your dealer or other authorized service representative for service instructions.
Q:
Dark spots on screen.
S:
These are cosmetic blemishes in the intensifier tube. They are a by-product of the process
of manufacturing night vision tubes. They will not impede your viewing ability.
Q
: Fixed-pattern noise in a honeycomb shape.
S:
Usually a cosmetic blemish characterized by a faint honeycomb-type pattern. This usually
occurs when viewing very bright lights. Adjust the potentiometer, to reduce brightness.
Q:
A pattern of dark thin lines which look like chicken wire.
S:
Turn on illuminator, if purchased. If illuminator doesn’t brighten image, replace batteries. If
problem persists, contact your dealer or other authorized service representative for service
instructions.
Q:
Image not clear.
S:
Adjust focus ring. If problem persists, increase viewing distance form object.
