EOTech CNVD-T3 Clip-On Night Vision Device - Thermal 3 - Manual (Page 30)

2-12
2.10.1 Auto-Gain Control . The CNVD-T3 may also be
placed in one of two auto-gain modes:
a. AUTO-LOW mode is accessed by repeatedly
pressing the RIGHT button to move the status bar
along the gain scale. As the status bar approaches
the extreme right (+) end of the scale, the word
MANUAL will be replaced by the word AUTO-LOW.
b. While in AUTO-LOW mode, pressing the RIGHT
button once more will place the CNVD-T3 in AUTO-
HIGH mode. The word AUTO-LOW will be replaced
by the word AUTO-HIGH.
NOTE
Adjusting the gain in MANUAL mode allows for
lower and higher settings than either AUTO mode.
2.10 FOCUS ADJUSTMENT
The objective lens must be focused for the viewing distance
being observed. Rotate the objective focus ring for best
image clarity. A change in viewing distance requires that the
lens be refocused. However, if already focused for a
distance of about 300m, no change in focus is required
between this distance and infinity.