Armasight NSGN150001F6DA1 N-15 FLAG Night Vision Goggles - Manual (Page 22)

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4. Turn the function switch ON. After a slight delay, a green glow will appear in the eyepiece of the
Goggles.
5. Adjust the unit diopter by rotating the ring of the eyepiece.
6. Observe the scene. Rotate the focus ring until the image is clear and sharp.
CAUTION:
Bright sources such as firelight, headlights, searchlights, etc. can damage the N-15. Avoid expos-
ing the unit to these types of light sources.
3.3.2 IR ILLUMINATOR OPERATIONS
CAUTION:
When operating the device in extremely dark conditions, the light from the unit’s IR illuminator
will be invisible to the unaided eye. However, the light can be detected by other NVDs.
NOTE:
The IR illuminator is designed to provide additional illumination (when needed) while viewing
scenes or targets from a short distance (up to 3m).
1. To activate the IR illuminator, turn the goggles on. Rotate the function switch (A) from ON to the IR
position. A red light will appear in the eyepiece to indicate that the IR illuminator is operating.
2. Focus the IR light, if necessary, by placing the pivotal focusing lens (B) onto the IR illuminator output
window (C).
FIGURE 3-9. IR ILLUMINATOR OPERATIONS
B
A C
3.3.3 OPERATING UNDER CHANGING LIGHT CONDITIONS
If the ambient light level exceeds the limit of 100-300 lx for more than 10 sec, the N-15 automatic pro-
tective system will shut off the intensifier tube. If a mission must be carried out in changing light condi-
tions, the user can shut down the protective system manually by closing the photoreceiver.
CAUTION:
DO NOT forget to open the photoreceiver after completing your mission.