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• Is mounted on MIL-STD-1913 rail or dayscope lens.
• Is submersible to 10 m for 30 minutes.
• Filled with dry nitrogen to prevent internal fogging.
D. System Limitations
The PS28 is an effective night vision system designed for night op-
erations but does have the following limitations:
• The sight requires some night light (moonlight, starlight, etc.) to
operate. Night light is reduced by such factors as passing cloud
cover and objects that produce shadows.
• The sight is less effective viewing through rain, fog, sleet, snow,
smoke.
• Under starlight conditions low contrast environments (such as
snowcovered territory, sandy deserts, large bodies of water or
grassy hills) degrade visibility thereby disguising or masking
changes in terrain.
• Under low-light conditions the sight looses some of the resolu-
tion that it has under full moon.
TABLE 1-1. SYSTEM DATA
ITEM
DATA
Magnification
Unity (1 X)
Boresight Characteristics:
Accuracy
Factory aligned to ½ MOA or better
Retention
Permanent to within 1 MOA or better
Repeatability
Within ½ MOA
System Resolution subject to Tube Resolution:
36 to 44 lp/mm
0.38 mrad/lp
45 to 54 lp/mm
0.30 mrad/lp
55 to 64 lp/mm
0.25 mrad/lp
Over 65 lp/mm
0.21 mrad/lp
Содержание ATN PS28
Страница 7: ...1 1 SECTION I INTRODUCTION ...
Страница 16: ...1 10 FIGURE 1 3 PS28 OPTIONAL EQUIPMENT 5 4 1 2 3 6 ...
Страница 17: ...2 1 SECTION II OPERATING INSTRUCTIONS ...
Страница 32: ...2 16 ...
Страница 33: ...3 1 SECTION III MAINTENANCE INSTRUCTIONS ...
Страница 44: ...3 12 ...
Страница 47: ......