6
DESCRIPTION OF DESIGN AND OPERATION
1 DESCRIPTION AND OPERATION OF THE ARTICLE
1.1 Purpose
.. The night distant observation device (index PN9-2), the article PN9-2
(hereinafter referred to as the article) is designed for battlefield observation,
target recognition and adjustment of shooting at night.
It is possible to carry out the following operations with the help of the
article: measuring of horizontal and vertical angles, defining azimuth and target
angle of elevation, measuring distance to the target if its dimensions (height
or direction) are known.
..2 The article operates in ambient air range from -50 to +50 °C and relative
humidity at 00% at tempe25
°C.
1.2 Performance features
.2. The main performance features must correspond to the table .
Table
Name
Value
Magnification, x
6.5
Angular field of view in the objects area
5.5°
Exit pupil diameter, mm
4.75
Eye relief, mm
50
Ocular setting range, diopter
from – 4 to + 4
Angle-of-adjustment range:
for target position, etc.
from – 3-00 to 3-00
for horizontal, etc.
from 0 to 60-00
Limb scale factor:
rough reading, etc.
-00
fine reading, etc.
0-0
Focusing range, m
from 50 to
∞
Maximum voltage, mA:
for sighting device consumption
40
for illuminator consumption
40
Power batteries voltage, V:
two accumulators NLTs-0.9-
2.4
two batteries R6 (AA)
3.0
element ТHL-36
3.6
Summary of Contents for 1PN91-2
Page 1: ...ARTICLE 1PN91 2 Service manual AL3 803 105 RE...
Page 2: ......
Page 37: ...37 2 1 3 1 cap 2 ring 3 cap Figure A 5 The illuminator...
Page 38: ...38 Figure A 6 The field of view of the sighting device...
Page 39: ...39 Figure A 7 The Landolt ring for checking illumination...
Page 40: ...40 Figure A 8 The chart for illumination defining Illumination lux distance m...
Page 43: ...43 1 91 2...
