ATN 3 manual Mechanical Functions

b. Mechanical Functions

The mechanical functions of the ATN NVM-14 allow for dif- ferences in the physical features of individual operators and provide for operating the system. These functions include the On/Off/On IR control, eye relief (see Section III Mounting Procedures – Headmount Adjustments), diopter adjustment, objective lens focus, and IR illuminator focusing. These mechanical controls are identified in Figure 4-3.

Operation button (A) switches both the monocular and the IR Illuminator on/off.

To turn the monocular on, press button (A) by one short push, to turn it off – press button (A) by another short push.

You may adjust the unit diopter by rotating the eyepiece ring (B). The total dioptric range is covered in 1/2 revolution.

To make the unit focus appropriate for different distances you should rotate the front lens ring (C). The total focusing range is covered in 1/3 ring revolution.

C

B

A

Figure 4-3

Mechanical Functions