Nightwitness is a sophisticated precise optical instrument equipped with electronics.
Therefore, it should be handled with due care.
•
Try to avoid strong heat, direct sunlight, impacts, dust, moisture and sudden changes of
temperatures. Keep it in mind that, although being very durable, Nightwitness contains fragile
components.
•
Do not touch the optical surfaces with fingers. Doing so may damage the antireflection coating.
•
Cleaning of optical surfaces should only be performed with professional camera lens cleaning
supplies.
•
Use only a soft clean cloth to clean the exterior of the device.
•
Do not take the cover off the lens if not necessary.
•
Keep away from heating appliances and central heating.
•
Make sure to switch off the unit and remove the battery during periods of non-operation
and when storing the device for long period of time.
•
Do not apply unnecessary pressure to the lens assembly, agile elements & thread connections.
•
Due to considerable optical magnification of the eyepiece some small structures inside the tube
coating in the form of dark and/or white points may be seen in the field of view which does not
affect the serviceability of the device.
PRECAUTIONS
7
Warning !
Warning !
Warning !
Warning !
Warning !
Image Intensifier possible defects table.
Clarity of Image Intensifier tube is check against the table below:
Í î ì åð
çî í û
Ðàçì åð çî í ,
ì ì
Í àèáî ëüøèé äèàì åòð òî ÷åê, ì ì
Äî ï óñòèì àÿ ñóì ì àðí àÿ
ï ëî ù àäü äåô åêòî â,
,
ì ì
2
í å
ó÷èòû âàåì û õ
äî ï óñòèì û õ
ï î ðàçì åðó, ì ì
ï î êî ëè÷åñòâó
1
2
3
0...9,0
9,0...14,5
14,4...18,0
0,06
0,08
0,1
0,15
0,25
0,35
1
2
2
0,12
0,27
0,45
TECHNICAL SPECIFICATIONS (CONT)
6
ZONE
NUMBER
CIRCULAR ZONE
DIMENTIONS, MM
FIELD OF VIEW CLEANNESS:
NEGLECTED
ADMITTED
DIAMETER, MM
QUALITY
ADMITTED TOTAL
AREA OF DEFECTS, MM
2
