IMPORTANT INFORMATION
Read prior to activation
You have just purchased a complicated electronic device. To operate
it properly, please read this manual carefully. Here are some common
Precautions that must be noted.
•
NEVER
expose the opened objective lens of an active unit in
daylight. At daytime objective lens must be covered by caps.
There is a tiny hole in the cap to provide enough light for daytime
operation. It is allowed to turn on the unit at daytime, but caps
must cover the lenses.
•
NEVER
aim active unit at intense light sources (i.e. lights,
headlamps, campfires, the moon, etc.)
•
NEVER
reverse the polarity of a battery
•
NEVER
disassemble the unit
•
NEVER
connect the unit to external power sources
•
ALWAYS
remove batteries when not in use for a long period
•
ALWAYS
keep the objective lenses covered when not in use
•
ALWAYS
store in a warm dry place when not in use
2
ATTENTION!
Image quality of the object, which is being observed
When an image intensifier is functioning, depends
Mainly upon operating characters
of this image intensifier.
Due to this fact black spots, which are inherent in the image intensifier,
may be seen in the field of view of a viewing device. Field of view is
shown below.
Central zone
Boundary zone
Periphery zone
Permissible defects, which may be seen in the field of
viewing device, are given in the table
Type of
black spots
Immovable
Zone
Central
(circle of diameter
5.5 mm)
Boundary
(circle of diameter
5.5-9.0 mm)
Periphery
(circle of diameter
9.0-11.0 mm)
Entire field
(circle of diameter
11.0 mm)
Size of black spots,
mm
Number of
spots
Moving
Not limited
Not limited
Not limited
5
1
10
3
1
1
From 0.150 to 0.294
From 0.073 to 0.150
From 0.150 to 0.294
From 0.294 to 0.400
Up to 0.073
From 0.073 to 0.150
From 0.150 to 0.294
15
