Description And Data; Description - ATN PS-40 Operator's Manual

1.2. DESCRIPTION AND DATA

1.2.1. DESCRIPTION

A. Purpose
The PS-40 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-40 can be installed also forward of viewfinders of vari-
ous instruments to widen operating illumination range.
B. Principle of Operation
The PS-40 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 and Limitations
The PS-40 has the following important features:
• Available with 2+, 3 or 4th generation image intensifier tube.
• Powered by a single alkaline AA or 123A lithium battery.
• Adjusts for lens focus.
• Equipped with manual gain control (MGC version of the sight)
for the best possible image contrast under high and low light
conditions.
• Is mounted on MIL-STD-1913 rail or dayscope lens.
• Battery life check system.
• Equipped with remote control.
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