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6. OPERATION INSTRUCTIONS
6.1
Installing battery
Unit is supplied with uninstalled battery.
Prior to installing the battery, make sure the switch (1, Fig.1) is
in the OFF position and the lens cap is on.
The unit can operate on either AA Alkaline or CR-123 Lithium
battery. Lithium battery durability is doubled against the service
time of conventional battery and provides better performance at
low temperatures.
To install battery unscrew the battery compartment cover (6,
Fig.1). When using CR-123 Lithium type battery, remove the
battery type adapter. Observe the polarity indicated on the
housing. Put the battery in and screw the battery cover back on.
6.2
Switching the unit on
In the daytime put on the lens cap with the daylight filter
prior to switching the unit on.
To check if the unit is operational switch it ON (rotate switch (1,
Fig.1) clockwise) and look through the eyepiece (4, Fig.1). You
should see greenish-lit screen. If the screen is not lit check the
battery.
When the unit is ON user may see either one or two circular
indicators through the eyepiece (Fig. 2). When inactive they are
hardly noticeable. Bright yellow or flashing red spot indicates
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