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3-5

Youscopehasabilitytofocuseitherlongrangeorshort.Focusthe

front lens to rotate it until the image and the grain are both sharp.

FIGURE 3-3. FOCUS ADJUSTMENT

NOTE

The front lens should be readjusted for viewing objects at diffe-

rent distances.

Rotate the focusing ring clockwise for far focus,

counterclockwise for near focus.

3.2.3. POLARITY

The function of polarity switching is accessible only in Black and

Whitemodels.

FIGURE 3- 4. DISPLAY POLARITY MODES

POLARITYbuttonswitchesthedirectdisplaymodeintothereverse

one, i.e. from hot-white/cold-black into hot-black/cold-white mode.

If the polarity is white-hot, the image will be with hotter objects dis-

played as white, and the rest of the image displayed as black, and

vice versa: with hotter objects displayed as black, if the polarity is

black-hot.

EYEPIECEDIOPTER

ADJUSTMENT RING

FOCUSING RING

HOT-WHITE/COLD-BLACKMODE HOT-BLACK/COLDWHITEMODE

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ATN ThOR Series Specifications

General