Operation Instructions, Installing battery

6. OPERATION INSTRUCTIONS

6.1Installing battery

Unit is supplied with battery not installed.

Prior to installing the battery, make sure the switch (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 provides approximately twice longer battery life and better performance at low temperatures.

To install battery unscrew the battery compartment cover (6). When using CR-123 Lithium type battery, remove the battery type adapter. Observe the correct polarity indicated on the housing. Put the battery in and screw the battery cover back on.

6.2Switching the Unit on

In daytime put on the lens cap with the daylight filter prior to switching on.

To check if the Unit is operational switch it ON (rotate switch (1) clockwise) and look through eyepiece (4). You should see greenish-lit screen. If the screen is not lit check the battery.

When the Unit is ON through the eyepiece user may see either one or two circular indicators (Fig. 2). When not active they are hardly noticeable. Bright yellow or flashing red spot indicate low battery voltage. For uninterrupted operation keep a fresh battery ready and replace it on time. Bright red indicator reminds the user that the IR illuminator is on (for more details see 6.9).