Night Optics Guardian 1x Gen 1+ Night Vision Monocular - Manual (Page 12)

12
TROUBLESHOOTING
Symptom Probable Cause Corrective Action
No visible Image a. Objective lens cap not been removed.
b. Battery cover is loose.
c. Incorrect battery polarity
d. Weak battery
a. Remove cap
b. Tighten cover
c. Re-insert battery
d. Replace battery
Image fl ickers, fl ashes, or clicking is heard a. Normal for new battery to cause this for
fi rst fi ve minutes.
a. If condition continues contact manufac-
turer for service instructions
Dark spots on screen a. Cosmetic blemishes. Normal for this
technology.
a. Acceptable as long as it does not inter-
fere with operation of the device
Image not clear a. Focus is not adjusted.
b. Too close to object
a. Adjust focus
b. Increase viewing distance.
Fixed pattern noise.
(honeycomb)
a. Cosmetic blemishes caused by too
mach illumination.
a. Acceptable as long as target resolution
can be resolved.
Pattern of dark thin lines
(chicken wire)
a. Normal under worst conditions. These
lines will form hexagonal or square wave-
shaved lines.
a. Acceptable as long as it does not inter-
fere with operation of the device
Image dimmer than usual. a. Weak batteries
b. Low natural illumination level.
a. Replace the batteries.
b. Turn on IR illuminator.