ATN ATN PS28, Operator'S Manual

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1-5
1.2. DESCRIPTION AND DATA
1.2.1. DESCRIPTION
A. Purpose
The PS28 is an effective night vision system that mounts forward
of an existing riflescope/spotting scope (further referred to as a
scope) adding night vision capabilities to daytime target acqui-
sition platform. Advisable dayscope magnification is 1X to 12X
(2.5X to 8X is optimum). The sight is installed and removed with-
out affecting boresight (permanent boresight alignment).
NOTE
The PS-28 can be installed also forward of viewfinders of vari-
ous instruments to widen operating illumination range.
B. Principle of Operation
The PS28 operation is based on the principle of electron-optical
intensification of light. The input fast catadioptric lens collects
available ambient light from sources such as the moon, stars and
skyglow and focuses it on the image intensifier tube photocath-
ode. The tube amplifies the light and produces the viewable im-
age projected by the output lens from the tube screen into the
dayscope lens. Thus the sight provides the capability for operator
to see through the scope at night.
C. Features
The PS28 has the following important features:
• Available with 2+, 3, WPT™* or 4th generation image intensi-
fier tube.
• Powered by a single 123A lithium battery.
• Adjusts for lens focus.
• Automatic Brightness Control System always keeps the IIT
brightness level constant, even under unsteady brightness
conditions.
• Equipped with remote control.
* WPT is a registered trademark of American Technology Network Corp.