Armasight NSGSPARK01CCIC1 Spark-G Night Vision Goggles - Manual (Page 25)

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TABLE 3-1. SPARK CONTROLS
CONTROL/INDICATOR FUNCTION
Function Switch
(Figure 3-14, A) OFF position — the unit is off.
ON position — the unit is on (IT powered).
Turn the unit on by turning the switch CCW from OFF to ON.
IR position — the unit is on, and the IR illuminator is activated.
Activate the IR illuminator by turning the switch CW from ON to the IR
position.
Eyepiece Ring
(Figure 3-14, B) Adjusts the unit diopter. The total dioptric range is covered in a 1/2 ring
revolution.
Focusing Ring
(Figure 3-14, C) Focuses the lens. Adjusts for sharpest view of the scene. The total focus
range is covered in a 1/3 ring revolution.
Bi-color LED Indicator
(Figure 3-14, D) A GREEN glow indicates that the unit is turned on and ready for operation.
A RED glow indicates that the IR illuminator is operating.
3.3 OPERATING PROCEDURES
3.3.1 OPERATING PROCEDURES
These procedures should be performed under nighttime conditions only.
CAUTION:
Use of the Spark brightly lit conditions may damage the unit’s intensifier tube.
1. Verify that the battery is installed as indicated on the monocular body.
2. Make a visual estimation of the illumination level in the viewing area. The required level of illumina-
tion is less than 1 lx (late twilight sky conditions).
3. Remove the lens cap and place it over the housing of the lens.
4. Turn the function switch ON. The green indicator light (Fig. 3-14, D) indicates that the unit is ready
for operation. After a slight delay, a green glow will appear in the eyepiece of the monocular.
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 Spark. Avoid ex-
posing 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.