Operation Instructions, Testing of operation

Figure 3

I/R illuminator and low battery indicator (red)

Optional separate low battery indicator (yellow)

5.OPERATION INSTRUCTIONS

5.1 Pre-starting procedures:

Unpack the device. In order to install the battery, first make sure the switch (1) is in the OFF position. Unscrew the battery house cover (5), and install 2 fresh AA batteries. Observe the correct polarity indicated on the housing. Screw the battery house cover back on. Check the functioning of the device by switching it on (rotate switch (1) and looking through eyepieces (4). Make sure the lens cap (6) is on while operating during the daytime. If power supply and the batteries are O.K., you will see greenish-lit screen. If the screen is not lit, check the batteries. Replace the batteries if necessary.

There are one or two indicators in the visible zone (see Fig. 3). When they are off the user can hardly notice them. Bright yellow and/or flashing red indicates that battery voltage

goes low. You should have the fresh batteries ready and

replace them in time. Bright red reminds / warns the user that the I/R illuminator is on (see below).

If everything works, now is a great time to fill the warranty card.

5.2 Testing of operation:

When wearing the unit the eye-relief (the distance between your eyes and the eyepieces) should be 15-22 mm. In order to achieve this, loosen locking screw (8) and set a comfortable distance between the eyes and the eyepieces; then rotate the locking screw (8) back. Turn on the device by rotating the switch (1) to the ON position. The green screens of the scopes must be lit. Direct the device on an object placed within 8-15m from the viewer. Rotate the eyepieces (4) and the lens (7) in order to achieve the sharpest image on the screen of the image tube.

The eyepieces (4) are set for a person individual eye sight, and do not need to be changed if the same person is using the apparatus. The lens (7) focus needs to be adjusted according to a different distance of observed scenery.

The distance between the eyes should be automatically applicable for people with 58-72 mm interpupilary distance, which covers over 99% of the adult population.