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b. MEChANICAl FUNCTIONS
the mechanical functions of the atN NVM-14 allow for differences
in the physical features of individual operators and provide for the
system operation. these functions include the On/Off/On IR con-
trol, eye relief (Section III Mounting procedures), diopter adjust-
ment, 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 Il-
luminator 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.
The ring (D) serves to fix the "infinity" position of the front lens fo-
cus.
C
b
A
d
FIgURE 4.3. MEChANICAl FUNCTIONS
4-4
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