Armasight NSGSPARK01CCIC1 Spark-G Night Vision Goggles - Manual (Page 29)

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This table does not list all of the malfunctions that may occur with your device, or all of the
tests and corrective actions that may be necessary. If you experience an equipment malfunction
that is not listed, or is not fixed by the corrective actions listed in the table, please contact Armasight’s
Customer Service center.
TABLE 4-2. OPERATOR TROUBLESHOOTING
MALFUNCTION PROBABLE CAUSE/ TEST/INSPECTION CORRECTIVE ACTION
Monocular fails to activate Battery is dead, missing or improperly
installed.
Replace the battery or install it correctly.
Battery contact surfaces or contact
springs are dirty or corroded.
Clean the contact surfaces with a pencil eraser
and/ or alcohol and cotton swabs.
Defective image intensifier. Please contact Customer Support.
IR illuminator fails to activate Turn the IR illuminator on in a dark
area. Visually estimate whether or not
the observed scene is illuminated.
If the IR illuminator fails to activate, please
contact Customer Support.
Poor image quality Check objective lens or eyepiece fo-
cus.
Refocus the lens.
Check for fogging or dirt on the lens. Clean the lens as detailed in Part 4.4.2. If image
quality is still poor, please contact Customer
Support.
Damaged optical components. Please contact Customer Support
Light is visible around the
eyecup
Check the exit pupil distance value. Readjust for proper eye-relief distance.
Check the eyecup resilience. If the eyecup is defective, please contact Cus-
tomer Support.
Focusing ring cannot be
moved
Check to see if the focusing ring is bent
or broken.
If damaged, please contact Customer Sup-
port.
Eyepiece ring cannot be
moved
Check to see if the eyepiece ring is
bent or broken.
If damaged, please contact Customer Sup-
port.
4.3 IDENTIFICATION OF OPERATIONAL DEFECTS
4.3.1 OPERATIONAL DEFECTS
Operational defects relate to the reliability of the intensifier, and are an indication of instability. If iden-
tified, the user will need to return the Spark immediately. Operational defects include shading, edge
glow, flashing, flickering, and intermittent operation.
A. Shading
If shading is persistent, you will not be able to see a fully circular image (Figure 4-1). Shading is a very
dark, high-contrast area with a distinct line of demarcation present, and you cannot see an image
through it. Shading always begins on the edge, and will eventually migrate inward until it spans across
the entire image area. If you notice shading with your device, please contact Customer Support.
SHADING
FIGURE 4-1. SHADING