Operating Procedure; Turning On; Focusing - ATN OTS-30 Operator's Manual

3.2. OPERATING PROCEDURE

3.2.1. TURNING ON

Open the objective lens cover. The objective lens cover protects the
scope from inadvertent exposure to extremely high levels of radiant
flux. Never leave the scope with the objective lens cover off.
To turn the unit on press the button labeled ON/OFF.
After warm up time of approximately 5 seconds, video of the thermal
scene appears.

3.2.2. FOCUSING

To focus the scope you need to adjust the diopter. The scope has an
adjustable eyepiece with a range of +2 to -6 diopter. Simply turn the
diopter clockwise until it stops. Then concentrate on any object and
slowly turn the diopter back counter clockwise until the grain in the
image is sharp. Then rotate the eyecup to accommodate use over
the left or right eye.
Figure 3-2. Switchboard of OTS
Figure 3-3. Focus Adjustment
EYEPIECE DIOPTER
ADJUSTMENT RING
3-3